BMW E30 Wiring DIagram

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1989
Electrical

Manual

BMW of North America, Inc.
Woodcliff Lake, New Jersey

©

BMW 325i/325is

Troubleshooting

FOREWORD

In the interests of continuing
technical development work
we reserve the right to modify
designs and equipment

Printed in „5a
Capri BMV ol North Arai, In.

Notte e rapreduced senal arin cart
shout anton pois on ef EM ot
Nor Amica, ln

PN a9 891 000 292

1989

BMW 325i/325is
Electrical
Troubleshooting
Manual

CONTENTS

dis; A
How To Use This Manual

Wire Size Conversion Chart . . .

Symbols .......... .
Systematic Troubleshootin:
Connector Views ...
Power Distribution Box .
Fuse Data ..
Component Location Chart
Component Location Views
Splice Location Views . . .

DAWN

. 0670-0
0670-1
. - 9000-0

. 7000-0

. 8000-0

2-0 INDEX

Index — Alphabetical Listing of Electrical Circuits

Active Check Control
AIC Air Delivery Control

AIC Blower Controls

AIC Compressor Controls . .
AIC Temperature Control.
Antilock Braking System (ABS)
Auto-Charging Flashlight .
Auxiliary Fan E
Auxiliary Fuse... |

Brake Warning System
Central Locking

— (2Door)

— (4Door). :
Charge ...
Cigar Lighter :
Component Location Chart
Component Location Views
Connector Views

Cruise Control

Fuel Economy Gauge

Fuel Gauge .

Fuse Data Chart

Fuse Details

— Fuse 4

— Fuse 5.

— Fuse 6

— Fuse 8

— Fuse 9

— Fuse 10.
— Fuse 12.
— Fuse 19

— Fuse 20

— Fuse 21

PAGE
6216-0
6421-0
6413-0
6452-0
6411-0
3450-0
6100-1
6454-0
0670-2
3435-0

5126-0
5126-2
1230-0
8100-1
9000-0
7000-0
8500-0
6571-0
6210-3
6210-1
0670-1

0670-6
0670-6
0670-6
0670-7
0670-11
0670-8
0670-7
0670-7
0670-9
0670-10

— Fuse 27
Gauges 2
Ground Distribution”
= 6103.
— 6104
— 6106
— 6200

— G201..
— G300 .
— G302
Hors... ... o
Ignition Key Warning .
Indicators
— Active Check Control Alarm
— Anti-Lock .
— “Brake Lights” Fault
— "Brake Lining’ Wear .
— Brake" Warning
Charge
— “Coolant’’ Level Faul
— “Engine Oil” Fault
— Fasten Seatbelts .
— Fog Lights . Sl
— HighBeam u...
— Inspection
— LH Turn :
— “License Plate” Fault
— “Low Beam’ Fault
— Low Fue! Warning
— Oil Pressure Warning
— Oil Service

PAGE
0670-11
6210-1

0670-12
0670-13
0670-13
0670-13
0670-14
0670-15
0670-14
0670-15
0670-15

6100-0

6131-0

6210-1
3450-0
6216-1
3435-0
3435.0
6210-0
6216-2
6216-2
62162
6312-0
6312-1
6210-2
6313-1
6320-0
6312-1
6210-1
6210-1
6210-2

— “Park Brake”
— “Rear Lights’ Fault
— RH Turn

fasher Fluid” Fault
Injection Electronics .
Instrument Cluster
Lights

~ AIC Control Power
— Ashtray

— Back Up
—Dash.....

— Cigar Lighter”

— Fog...

— Front Side Marker
— Front Turn/Park

— Glove Box

— Hazard Switch .
— Headlights

— Instrument Cluster
— Interior

— License

— Map Reading Light
Park
— Rear Side Marker
— Stop 4
— Tail
— Trunk
— Tum/Hezard

Light Switch Details
Multifunction Clock . -
On-Board Computer .
Power Antenna
Power Distribution

PAGE
3435-0
6314.0
6313-1
6216-2
1360-0
6210-0

6300-1
6300-1

6322-0
6300-1

6300-1

6312-0
6314.0
6314.0
6100-1

6313.0
6312.0
6300-1

6330-0
6320-0
6100-1

6314-0
6320-0
6325-0
63140
6320-0
6313-1

6300-0
6581-0
6581-2
6500-0
0670-0

Power Distribution Box
Power Mirrors

Power Windows

— 2Door..

— 4Door 2d
Radio With Sound System
Radio Without Sound System
Rear Defogger
Seatbelt Warning
Service Interval indicator . .
Speedometer .

Splice Location Views Index

Start
— Automatic

— Manual

Sunroof

‘Tachometer

Temperature Gauge ..... :
Warnings

— Ignition Key/Seatbelt
Wiper/Washer

PAGE
0670-0
5116-0

5133-2
5133-0
6500-0
6500-2
6100-2
6131-0
6210-2
6210-0
8000-0

1240-0
1240-1
5413-0
6210-3
6210-1

6131.0
6160-0

2-1 INDEX
Index — Alphabetical Listing of Electrical Circuits

HOW TO USE THIS MANUAL 3

The purpose of this manual is to show
electrical schematics in a manner that
makes electrical troubleshooting easier
Electrical components which work
together are shown together on one
schematic. The Wiper-Washer schematic.
for example, shows all of the electrical
components in one diagram. At the top of
the page is the fuse (positive) that powers
the circuit. The flow of current is shown
through all wires, connectors. switches.
and motors to ground (negative) at the
bottom of the page.

Within the schematic, all switches and
sensors are shown "at rest.” as though the
Ignition Switch were off. For identification.
component names are underlined and
placed next to or above each component.
Notes are included, describing how
switches and other components work.

The power distribution schematic shows
the current feed through all the
connections from the Battery and
Alternator to each fuse and the Ignition
and Light Switches. If the Power
Distribution schematic is combined with
any other circuit schematic, a complete
picture is made of how that circuit works.
The Ground Distribution schematics show
how several circuits are connected to
common grounds.

All wiring between components is
shown exactly as it exists in the vehicle;
however, the wiring is not drawn to scale.
To aid in understanding electrical
operation. wiring inside complicated
components, has been simplified. The
Solid State” label designates electronic
components. *

WIRE SIZE

CONVERSION CHART mine Pecan

BLACK
BROWN

METRIC AWG
(CROSSECTIONAL AREA] (AMERICAN

IN MM2) WIRE GAUGE)
REO
YELLOW
GREEN

LUE

VIOLET
GRAY
WHITE
PINK

4 SYMBOLS

Emme
COMPONENT

1 comPoneur
Par

e

genres
H

comroneur
Tenanaus

souo rate
‘anctuoes anıy
Euseraome PARIS)

Lean meray

conecto
"Jarramen to

cowonewr
case Is
OREETLX
METAL PART
OF can
‘xDvnoeD)

INDIcATeS THAT Fuse $

Lo as

He)
I.

rocas mar eue à
(Tlemcen rman
anh men
En ies o
Fo
te |
itd

ae

Fon aros
ARE Sao

250

sunno aurodárc
Transmssion A Taaxswssion
==

2m. 150K

Gomnécron nerenence
NUMBER FOR COMPONENT

DA BER” cna ase snows
ew numen TOTAL NUMER OF
‘CONTACTS POSSIBLE

am. Er
Bone COLOR , Paid

+s cowmuco

RE mSULATION
15 on: color

Soon stare
ER aco sera somo

une is ATTACACO 10
Som ETAL PART OF CAR
(Saauoen)
ROUND Is RUmBEREO
Ace cnunonent Location char

À GROUNO ARE Sao

pig
E Guanta can
Te ontenan

cermcunr FERENCE -
A WIRE WHICH CONNECTS
To anoTwer cıneum

ev.

A TO Postion

swtrenes raat
MOVE TOGETHER

A MECHANIEAL
connecnon
BETWEEN SuTcncs

wu an Bene

DASHED une sous
sem sauve] pants oF me
SAME CONNECTOR

RELAY sao
ra na
FLOWING
THROUGH

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SUPPRESSION — srarevnion

AT G1E2 THROUGH SI, BUT ARE
NOT SHOWN. REFER TO GROUND

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6 SYSTEMATIC TROUBLESHOOTING

TROUBLESHOOTING PROCEDURE

1. Verify the Problem

Operate the problem circuit to check
the accuracy of the complaint. Note the
symptoms of the inoperative circuit

2. Analyze the Problem

Refer to the schematic of the problem
circuit in the ETM. Determine how the
circuit is supposed to work by tracing
the current path(s) from the power feed
through the circuit components to
ground. Then based on the symptoms
you noted in step 1 and your under-
standing of circuit operation, identify
one or more possible causes of the
problem

3. Isolate the Problem

Make circuit tests to prove or
disprove the preliminary diagnosis
made in step 2. Keep in mind that a
logical simple procedure is the key 10
efficient troubleshooting. Test for the
most likely cause of failure first. Try to
make tests at points which are easily
accessible.

4. Repair the Problem

Once the specific probiem is
identified. make the repair using the
proper tools and safe procedures

5. Check the Problem

Operate the circuit to check for
satisfactory circuit operation. Good
repair practice calls for rechecking all
circuits you have worked on.

TROUBLESHOOTING TOOLS

Isolating the problem (Step 3 of
TROUBLESHOOTING PROCEDURES)
requires the use of a voltmeter and/or
ohmmeter. A voltmeter measures voltage
at selected points in a circuit. An ohm
meter measures a circuit's resistance to
current flow. It has an internal battery that
provides current to the circuit under test
Disconnect the car battery when using an
ohmmeter because the battery voltage will
cause the ohmmeter to give false readings.
Also, do not use an ohmmeter on solid-
state components. The voltage that the
ohmmeter applies to the circuit could
damage these components.

TROUBLESHOOTING TESTS

Voltage Test

This test measures voltage in acircuit. By
taking measurements at several points
(terminals or connectors) along the circuit,
you can isolate the problem

To take a voltage measurement, connect
the negative lead of the voltmeter to the
battery negative terminal or other known
good ground. Then connect the positive
lead of the voltmeter to the point you want
to test. The voltmeter will measure the
voltage present at that point in the circuit

pe

artery voutase |

isso

[8 Dot

Voltage Test

SYSTEMATIC TROUBLESHOOTING 7

Voltage Drop Test

Wires. connectors. and switches are
designed to conduct current with a
minimum loss of voltage. A voltage drop of
more than one volt indicates a problem.

To test for voltage drop. connect the
voltmeter leads to connectors at either end
of the circuit's suspected problem area
The positive lead should be connected to
the connector closest to the power source.
The voltmeter will show the voltage drop
between these two points

Voltage Drop Test

Continuity Test

To perform a continuity test, first
disconnect the car battery. Then adjust the
ohmmeter to read zero while holding the
leads together. Connect the ohmmeter
leads to connector or terminals at either
end of the circuit's suspected problem
area. The ohmmeter will show the
resistance across that part of the circuit

BATTERY DISCONNECTED
Asmısurıon

Ousueren

Continuity Test

Short Test Using Voltmeter

Remove the blown fuse and disconnect
the load. Connect the voltmeter leads to
the fuse terminals. The positive lead
should be connected to the terminal
closest to the power source.

Starting near the POWER DISTRIBUTION
BOX. move the wire harness back and forth
and watch the voltmeter reading. If the
voltmeter registers a reading, there is a
short to ground in the wiring. Somewhere
in the area of the harness being moved, the
wire insulation is worn away and the circuit
is grounding

outers

2
tax eLo
u

Short Test Using Voltmeter

8 SYSTEMATIC TROUBLESHOOTING
A ————— AAA

Short Test Using Ohmmeter

Disconnect the battery. Adjust the
ohmmeter to read zero while holding the
leads together. Remove the blown fuse
and disconnect the load. Connect one lead
of the ohmmeter to the fuse terminal thatis
Closest to the load. Connect the other lead
10 a known good ground

Starting near the POWER DISTRIBUTION
BOX, move the wire harness back and forth
and watch the ohmmeter reading. Low or
no resistance indicates a short to ground
in the wiring. Infinitely high resistance
indicates no short

BATTERY DISCONNECTED

mutes Prag Low FLUID
| # ira

ow FL

Short Test Using Ohmmeter

0670-0 POWER DISTRIBUTION

POWER BISFRIBUTIONBO

FRONT
OF CAR

AND RELAY NOISE

SUPPRESSORS CONTROL UNIT

CIRCUIT BOARD

CONNECTORS)
100, C114, AND
CHISARE
LOCATED ON

THE UNDERSIDE
OF THE PRINTED
CIRCUIT BOARD

13! [18] [15]

LOW BEAM
CHECK RELAY

ke
FOG LIGHT]
RELAY

las |29) |30]

POWER DISTRIBUTION 0670-1

“FUSE DATA CHART
TRE FUSE
no. sue concur name no. size
7 TER edito also RUZ ITA coon cmeur name
2 TK Headights (ao tuses 1. 13:18 zo ES eer Cond ona
3 154 unir an ao fuses 78 19,20 = = AE tn 2 1.11
a 15a ‘ete check Conta! 7 no Chain Posh
(are usan 6, 10/21, 22,29): ro amg Sie en
ta aa Warring lo tus 2 Injection Electonics ie uss 9,10, 11)
a Teto Warring al Io 24 tripe ton Elec j
interior Lights lo ues 19,271
= ED perse Badolantenn oo les 12.29.20)
z Fe Scop its SECTOR Tose TO: Tran Los
Act Check Como! Rete Ense Contar
Poor 4.10.21. 22.20 iso sce 4,8, 10, 22, 23),
nest Baking Systems Seis menacer ls tse 101
Cruse Control aso fuses 10: On Bow Computer lo fuses 10.12.29, 27)
: Map Reading Techometerucl Economy Gauge
3 Tea Hain. _ ‘tooth
a 302 Ra Delos es usa 20 = TR Retro Chock Conta
3 isa jeton heroes (oso fuses T0113. MORE
lion Key Warning Seth Win alo Fase] gs ont Pak Tai alo use 20;
19 758 ison Key Waring/Sotbt Waring Go tins ome Metre a
eatbeit Warning (also fuse 21 23 7ER Lights: Dash
Sonica merlo leo fuse 20); Lights: Front Para too fuse 221
Tachometer ol Eecremy Gauges Lights Front Side Marker (ass fos 22:
‘noo use ih ont ear Mara env
Since Warning Sytem: (alo fuses 4,6, 10,21, & 22
Back upugnts on Bar Compu
On Board Compas iso fuses 12,21, 23,27) ition 1,12 2.21,
ones eer Bug dee fe 8
Inacio Encore ale uses 9, 1.20 = TE ani SE
Active Check Conta aco ases 4. 6121.22, 25 None
nie Cont to se. EJ Note
= a TRADE > SN LE
72 LES RadiorArtenne (ls fun 21.27.20 Fac Antenne llo fuses 12.21.20:
Speedonterinaestore On Bord Computer oleo fuses 10.12.21, 23)
‘Bord Computer lso fuses 10,21, 79,27) = == eee
a Ta Heights (bo uses 1.2.1 Reef (en Los 12, 21,27
ry LE est aso fuses 1.2.1) = TR Fog igh lo fuse 0.
1 Not Uses 30 Ta Fog Ligh (io luso 20.
1 Not Usa POWER WINDOW
17 En Power Mindo Samoa neu BRARER ES Power Windows
ie 202 Aaa Fon abo fuses 315,20)
9 LES ua Fan aso uses 3 1,201

interior Lights falso fuses 6,21. 271:
Power Miror,

0670-2 POWER DISTRIBUTION

Lemos,
Moe END ANTILOEX CENTRAL INDICATORS,

conrad syste sere

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suse ruse ruse ms use
eras seras eran gras ETAL

POWER DISTRIBUTION 0670-3

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INS

ros
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25680 le “a
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0670-4 POWER DISTRIBUTION

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POWER DISTRIBUTION 0670-5

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POWER DISTRIBUTION 0670-5

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0670-6 POWER DISTRIBUTION

FUSE DETAILS: FUSES 4, 5, AND 6

if Truman
| ee jua
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tnceessoa¥

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POWER DISTRIBUTION 0670-7

FUSE DETAILS: FUSES 8, 12 AND 19

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mere)
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PAGE es PAGE sise Core masses

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0670-8 POWER DISTRIBUTION
FUSE DETAILS: FUSE 10

mount €
‘automatic Nanvar ‘accesso
Transmssion Don ransssion ‘counecran)

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POWER DISTRIBUTION 0670-9

FUSE DETAILS: FUSE 20

sown

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Amnsıar

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ate

0670-10 POWER DISTRIBUTION
FUSE DETAILS: FUSE 21

ENT

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su |
sanan

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POWER DISTRIBUTION 0670-11
FUSE DETAILS: FUSES 27 AND 9

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ascuwr

‘Sontag, ma

carie
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PAGE ss à

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0670-12 POWER DISTRIBUTION
‘GROUND DISTRIBUTION: G103

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En

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Finpennricanion
> | SEEPAGE 15807

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[see pace 1007

91H (ONAN sex TOWER)

POWER DISTRIBUTION 0670-13

GROUND DISTRIBUTION: G104, G106 AND 6200 (PARTIAL)

MLERONT an AON
Tommranx — SoEMaRER

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fa iw kr

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| LEVEL
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seme sena
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COMME TOR)

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1 Sas DOES NOT EXIT ON A VEMIELE,
‘AL SACUIS oa DIRECTLY To 6m.

su

200 PARTIAL (UNDER Lu SIDE OF am asove amare Peon) À

0670-14 POWER DISTRIBUTION
GROUND DISTRIBUTION: (G200 PARTIAL AND G201)

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ace HECK CLUSTER mur

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ASS DOES NOT EXTON AYENICLE,
D PARTIAL (OER LH SIDE OF OASH ABOVE BRAKE PEDAL) AL CIRCUS 60 DIRECTLY TA 208.

POWER DISTRIBUTION 0670-15
GROUND DISTRIBUTION: G200 (PARTIAL) AND G300
onvens ano
pers Frenos, pasemos CENTRAL saw grout
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1240-0 START
AUTOMATIC TRANSMISSION

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1240-1

1360-0 INJECTION ELECTRONICS
ENGINE BLOCK DIAGRAM

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INJECTION ELECTRONICS 1360-1

ENGINE BLOCK DIAGRAM.

1360-2 INJECTION ELECTRONICS

ENGINE BLOCK DIAGRAM

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sounstate + Gonna

INJECTION ELECTRONICS 1360-3

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1360-4 INJECTION ELECTRONICS
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1360-6 INJECTION ELECTRONICS

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1360-8 INJECTION ELECTRONICS

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ANTILOCK BRAKING SYSTEM (ABS) 3450-1
EARLY PRODUCTION

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5126-0 CENTRAL LOCKING
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LOCKING CONTROL UT

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5126A-0 CENTRAL LOCKING

TROUBLESHOOTING HINTS

1. Check Fuse by operating the Interior Light
‘Timer for either Dome Light.

2. If all locks stay in unlock inhibit, check the
wires to terminal 10 of the Central Locking
Control Unit for a short to ground.

SYSTEM CHECK

‘© Operate controls in sequence listed in the
System Check Table.

+ Refer to Repair Action for the Response
received (tests follow the System Check
Table}.

+ After any repair, repeat System Check to
verity proper system operation.

NOTE: Before replacing any system compo-

nent, check all connectors, splices, and wiring

‘to that component,

SYSTEM CHECK TABLE

‘OPERATION

RESPONSE

REPAIR ACTION

1. Insert the key in the Driver's door and turn
toLOCK

All doors lock

None, proceed to Operation 2

‘Some doors lock

Repair/replace the suspect Door Lock Motor
circuit

No doors lock

Proceed to Operation 4

2. Turn the key to UNLOCK INHIBIT
{clockwise until key is horizontal)

‘All doors double lock (Safety Catch Buttons
cannot be pulled up by hand)

None, proceed to Operation 3

Drivers door double locks and only some of the
other doors double lock

Repairireplace the suspect Door Lock Motor

Driver's door double locks but all the other
doors do not double lock

Perform Test B

Driver's door does not double lock

Mechanical problem, see BMW Workshop Man-
val

SYSTEM CHECK TABLE (CONT'D)

CENTRALLOCKING 5126A-1

OPERATION RESPONSE REPAIR ACTION
. Turn the key to UNLOCK ‘All doors unlock None, proceed to Operation 4
Some doors unlock Repairireplace the suspect Door Lock Motor

circuit

No doors unlock

Proceed to Operation 5

Insert the key in the Passenger s door and
turn to LOCK.

All doors lock

Tf the doors did not lock in Operation 1, repair!
replace the Driver's Door Lock Switch,
‘otherwise proceed to Operation 5

Some doors lock

Repairireplace the suspect Door Lock Motor
circuit

No doors lock

Tf all the doors locked in Operation 1, repair!
replace the Right Front Door Microswitch.

If the doors did not lock in Operation 1, perform
Test A

. Insert the key in the Passenger 's door and
turn to UNLOCK

‘All doors unlock

E all the doors did not unlock in Operation 3.
repair/replace the Driver's Door Lock Switch,
otherwise proceed to Operation &

‘Some doors unlock

Repair/replace the suspect Door Lock Motor

No doors unlock

Ifall the doors unlocked in Operation 3, repair’
replace the Passenger's Door Lock Switch,

If the doors did not unlock in Operation 3,
perform Test C

Get in the car and close and lock all doors

Doors remain locked.

None, proceed to Operation 7

‘Turn the Ignition Switch to RUN Doors unlock Repairireplace the Central Locking Control Unit
Get out of the car ‘All doors can be unlocked None, proceed to Operation 8

Insert the key in the Driver's door and turn
toLOCK

Unlock each of the doors by pulling up the
Safety Catch Buttons

‘All doors remain secure

Disconnect the connector from the Central
Locking Control Unit and check for a short to
‘ground in the wires at terminal 11.

+ If short to ground is not present, replace the
Central Locking Control Unit,

* If short to ground is present isolate wiring,
from Door Lock Motors one at a time to find
short

5126A-2 CENTRAL LOCKING

SYSTEM CHECK TABLE (CONT'D)

OPERATION

RESPONSE

T

REPAIR ACTION.

8. Insert the key in the Trunk Cylinder
Switch. Turn the key to LOCK

‘Trunk locks

None, proceed to Operation 9

‘Trunk does not lock

Tf the doors lock, repairireplace the Trunk Lock
Motor Circuit or Trunk Lock Motor

If the doors do not lock, repairlreplace the
‘Trunk Switch

Repair/replace the Central Locking Controt
Unit if the Trunk Switch Cireuit is OK

9. Turn the key to UNLOCK

Trunk unlocks

None, proceed to Operation 10

“Trunk does not unlock

Tf the doors unlock, repair/replace the Trunk
Lock Motor circuit or Trunk Lock Motor

If the doors do not unlock, repair/replace the
‘Trunk Switch

Repair/replace the Central Locking Control
Unit if the Trunk Switch Circuit is OK

10. Turn the key back to LOCK

Gas Filler locks

‘None, proceed to Operation 11

Gas Filler does not lock Repair/replace the Gas Filler Lock Motor
circuit
11. Turn the key to UNLOCK Gas Filler unlocks None
| Gas Filler does not unlock Repairireplace the Gas Filler Lock Motor

circuit

+ Ifallresults are normal, the systemis OK.

SYSTEM DIAGNOSIS
+ Do the following tests when directed by
the System Check Table.

A: CONTROL UNIT LOCK TEST
(TABLE 1)

A: CONTROL UNIT LOCK TEST
(TABLE 2)

Measure: VOLTAGE
‚At: CONTROL UNIT CONNECTOR

‘Connect: A FUSED JUMPER
At: CONTROL UNIT CONNECTOR:

the voltages are correct, proceed to
‘Table 2.

1. Check the wire to terminal 3 for an open.
2. Check the wire from terminal 4 for an
‘open to ground {see schem:

(Connected) (Connected)
‘Measure Correct | For Jumper Conect | For
Between Voltage | Diagnosis Between Result | Diagnosis

38 Ground Battery | Seel EE Doors | See

384 Battery | See2 loc

+ If the result is correct, repairireplace the
switches and related wiring (see sche-
matic).

1. Proceed to Table 3.

A: CONTROL UNIT LOCK TEST
(TABLE 3)

[ Connect: FUSED JUMPERS
At: CONTROL UNIT CONNECTOR

(Disconnected)
Jumper Correct | For
Between Result _| Diagnosis

183 Doors
2&4 lock | Set

+ Ifthe result is correct, replace the Central
Locking Control Unit.

1. Check the wire from terminal 1 to splice
and the wire from terminal 3 to splice for
opens (see schematic).

B: UNLOCK INHIBIT TEST

‘Connect: A FUSED JUMPER
At: CONTROL UNIT CONNECTOR

(Connected) _
Jumper Comect | For
Between Result _| Diagnosis

Doors

10 & Ground double | See1

lock

+ If the result is correct, check the wires
from terminal 10 to ground for opens (see
schematic). Replace the Unlock Inhibit
Switch if the wires and connections are
OK.

1. Check the wires from terminal 11 for opens
{see schematic). Replace the Central Lock-
ing Control Unit, if the wires and connec-
tions are OK.

C: CONTROL UNIT UNLOCK TEST

Connect: A FUSED JUMPER
At: CONTROL UNIT CONNECTOR

(Connected)
Jumper Correct | For
Betwei Result | Diagnosis

Doors
6 & Ground cie | Sel

+ If the result is correct, repairireplace the
switches and related wiring (see sche-
matic).

1. Replace the Central Locking Control

Un

CIRCUIT DESCRIPTION

The Central Locking System is controlled
by the Central Locking Control Unit. This
unit senses when a lock switch is moved by a
key, and sends the appropriate signal to
drive the Motors. The Central Locking Con-
trol Unit controls the Door Locks, Gas Filler
Lock and ‘Trunk Lock. The unit also has an
Inertia Switch which closes on impact
greater than 5g. If in RUN or START the
locks are then unlocked.

Lock
When the Key is inserted into a lock and
turned clockwise, the Lock switch moves to
LOCK and grounds terminal 7 of the Central
Locking Control Unit. The unit then acti-
vates the Lock Relay and applies voltage
from Fuse 27 to the Lock Motor, which is
grounded through the Central Locking Con-
trol Unit terminal 2. The Lock Motor then
pulls the lock down. The door locks also con-
trol the Trunk Lock and Gas Filler Lock.

A nn

CENTRAL LOCKING_5126A-3

Unlock

When the key is turned counterclockwise.
terminal 6 of the Central Locking Control
Unit is grounded through the Lock Switch,
‘The Central Locking Control Unit then acti-
vates the Unlock Relay and applies voltage
from Fuse 27, through terminal 2to the Lock
Motor. The motor is grounded through the
Cental Locking Contrat Unit terminal 1. The
polarity is reversed and the motor pushes the
Jock up.
Unlock Inhibit

When the key is inserted into the Driver's
Lock and turned clockwise past the LOCK
position, the Unlock Inhibit mechanism is
engaged. This mechanically inserts a bar into
the driver's lock and prevents unlocking
through use of the Safety Catch Button.
When in the Unlock Inhibit position, ground
is applied to the Unlock Inhibit motors in the
other lock units. The Central Locking Con-
trol Unit is grounded at terminal 10 and then
activates the Lock Relay. Voltage is applied
to the Unlock Inhibit motors through termi:
nal 1, They are now activated and engage the
‘other Unlock Inhibit mechanisms. The direc-
tion of the motors is reversed when the doors
are unlocked (see Unlock).

Trunk Lock

‘The Trunk Lock operates in a manner similar
to the Door Locks.

5133-0 POWER WINDOWS
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6410-0

HEATING AND AIR CONDITIONING

6410-0 _ HEATING ARD AR ———

SYSTEM CHECK

This procedure provides an overall check of
the Heating and Air Conditioning System.
Each of the steps can be performed without
disassembly or the use of tools.

Complete this procedure with the tem-
perature outside the car above 60 degrees F (16
degrees C) and the engine warm and running at
idle.

SYSTEM CHECK TABLE

SET: Temperature Control fully counterclockwise
Upper and Lower Slide Lovers to extreme left
Center Slide Lever to extreme right
Blower Speed Control at 0 (OFF)

ACTION NORMAL RESULT
Press Fresh/Recirculating Air Switch (ON). | Fresh/Recirculating pushbutton lights. Blower
Release A/C button (OFF). runs slowly.

Rotate Blower Speed Control through steps 1
104

Blower speed increases at each step to max:
mum speed at Step 4

Press Fresh/Recirculating Air Switch to release
it(OFF)

Fresh/Recirculating button is no longer lit. Out-
side air is drawn into car, (The sound of Flap
Door Motors may be heard repositioning flaps.)

Rotate Temperature Contol at least 1/4 turn
clockwise

Air flow becomes warm

Depress A/C button (ON)

AIC button lights. A/C Compressor runs. Auxil-
iary Cooling Fans runs.

Press A/C button to release it (OFF)

‘AIC button is no longer lit.
AIC Compressor turns off.
Auxiliary Cooling Fan turns off

Set Blower Speed Control to 0 (OFF)

Blower turns off

+ fall of the steps can be completed as described, the He

normally.

ing and Air Conditioning Systom is operating

6411-0 A/C TEMPERATURE CONTROL
HEATING AND AIR CONDITIONING (HOT WATER CONTROL)

wor ware
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A/C TEMPERATURE CONTROL

CIRCUIT OPERATION

The Water Shut-Off Solenoid controls the
flow of engine coolant through the heater core.
When the solenoid is energized, coolant flow is
shut off to allow maximum cooling from the air
conditioning system. The Water Shut-Off Sole-
noid is controlled by the Hot Water Cut-Off
Switeh, which is part of the A/C Control Panel
TEMP Control.

Battery voltage is applied through Fuse 20 to
the Hot Water Cut-Off Switch when the Igni-
tion Switch is in RUN. The Hot Water Cut-Off
Switch is closed when the TEMP Control is
rotated fully counterclockwise (coldest posi-
tion}, and opens when the control is rotated
more than 20 degrees in a clockwise direction.
When the switch is closed, battery voltage
applied through the A/C In-Line Fuse to the
Water Shut-Off Solenoid. The solenoid is ener-
gized and shuts off the coolant flow through the
heater core.

‘The Water Shut-Off Solenoid and A/C In-Line
Diode are protected by the A/C In-Line Fuse. If
any failures occur in the solenoid, the Fuse will
isolate them to prevent the failures from affect:
ing other parts of the heating and air condition-
ing cireuits

TROUBLESHOOTING HINTS

+ Try the following checks before doing the Sys-
tem Diagnosis.

1. Check that Water Shut-Off Solenoid connec-
toris firmly seated.

2. Check the A/C In-Line Fuse,

+ Goto Heating and Air Conditioning (6410.0)
System Check for a guide to normal operation.

* Go to System Diagnosis for diagnostic tests.

SYSTEM DIAGNOSIS
+ Do the following test if the Water Shut-Off
Solenoid does not aperate normally.

WATER SHUT-OFF SOLENOID TEST

(TABLE 1)

‘Measure: VOLTAGE

At: WATER SHUT-OFF SOLENOID
CONNECTOR (Disconnected)

6411-1

(Continued from previous column)
+ If all voltages are correct, replace the
Water Shut-Off Solenoid.

1. Check the BU wire and A/C In-Line Puse
for an open. If wire and Fuse are good, go
to Table 2.

2. Check the BR wire for an open to ground.
Check that connector C204 is properly
mated.

3. Check BU wire for a wire-to-wire short to
voltage, If wire is good, replace the A/C
Control Panel TEMP Control

WATER SHUT-OFF SOLENOID TEST

(TABLE 2)

‘Measure: VOLTAGE

At: HOT WATER CUT-OFF SWITCH
CONNECTOR (Disconnected)

= Water Shut-Off Solenoid: CONNECTED

* Rotate A/C Control Panel TEMP Control
to Mid-Position

BU & Ground

O Volts See 3

Conditio i .
+ Ignition Switch: RUN jeasure omect |, Diagnosis
* AIC Control Panel TEMP Control: Between Voltage ua
FULLY COUNTERCLOCKWISE E
GNIBRE | Battery See 1
Measure | Comect | pyrpiognasie Ground
Between | Voltage GNBR&BU| Battery Seez
BU&Ground| Battery See * If both voltages are correct, replace the
BU&orBR | Battery Seez A/C Control Panel TEMP Control.

(Continued in next column)

1. Check the GN/BR wire for an open back to
Fuse 20.
2, Check the BU wire for an open.

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6413-0 A/C BLOWER CONTROLS
HEATING AND AIR CONDITIONING (BLOWER CONTROLS)

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CIRCUIT OPERATION

With the Ignition Switch in RUN, battery
voltage is applied to the Control Switches and
the Blower Speed Control through the GN/BR
wires. If either the A/C Select Switch or the
Fresh/Recirculating Air Switch are ON or the
Blower Speed Control is in position 1, battery
voltage is applied through the YL wire to the
Blower Resistors and the Blower Motor.

‘The Blower Motor is a variable speed motor
which runs at a speed proportional to the volt-
age applied to it. With all of the Blower
Resistors in the cireuit, the voltage applied to
the motor is reduced so the motor runs at a low
speed.

As the Blower Speed Control is moved
through positions 2 and 3, some of the resistors
are bypassed, allowing more voltage to be
applied to the Blower Motor, which then runs at
ahigher speed. When the Blower Speed Control
is moved to position 4, battery voltage is
applied directly to the Blower Motor, which
then runs at maximum speed.

The Blower Resistors dissipate heat because
of the current flowing through them. They are
cooled by the air flow from the blower. If there
is insufficient air flow to cool the resistors, the
safety switch will open, shutting the Blower
Motor off until the resistors have cooled.

TROUBLESHOOTING HINTS

» Try the following checks before doing the Sys-
tem Diagnosis.

1. Check Fuse 20 by visual inspection,

2. If Blower will run in high only, check the
Blower Resistors’ Safety Switch for an open.

+ Go to Heating and Air Conditioning (6410-0)
System Check fora guide to normal operation.

* Goto System Diagnosis for diagnostic tests.

SYSTEM DIAGNOSIS

+ Do the tests listed for your symptom in the
‘Symptom Table below.

+ Tests follow the Symptom Table.

SYMPTOM TABLE

SYMPTOM DO TEST
Blower Motor does
not run in any speed B
setting.
Blower runs only in
HIGH (does not run
in any other speed
setting).
Blower does not run
in some modes.

Blower does not run
with AIC ON or in A
Recirculating mode.
AIC Select Switch or
Fresh/Recirculating
Air Switch does not

light.

A/C BLOWER CONTROLS 6413-1

A: CONTROL SWITCH VOLTAGE TEST

‘Measure: VOLTAGE

At: CONTROL SWITCHES CONNECTOR
(Disconnected)

ns:

Ignition Switch: RUN

+ Blower Speed Control: OFF

Cor

Measure: Correct For
een | Votos | Diagnosis
TGNBRE | pay | See
A e
O sei
A ET
"onan | Pettey | ss

Tf all voltages are correct, do Test B.
Check the GN/BR wire for an open.

Check the YL wire for an open.

. Check the BR/WT wire for an open.

If voltage is not present between the GN/
BR wire and both the YL wires (terminals
3 and 5), do Test B.

6413-2 A/C BLOWER CONTROLS

B: BLOWER SPEED CONTROL TEST

(Continued from previous column)

Measure: VOLTAGE
AT: BLOWER SPEED CONTROL
CONNECTOR (Disconnected)
Condition:
+ Ignition Switch: RUN
+ AIC Select Switch: ON (Depressed)
+ Fresh/Recirculating Air Switch: FRESH

5. Check the BK wire for an open.
6. Check the GN wire for an open.
7. Check the BU wire for an open.
8

. If voltage is not present at the YL wire,
but is present at the GN wire or BK wire,
replace the Blower Resistors,

+ If all voltages are correct, replace the
Blower Motor.

1. Check the GN/BR wire for an open.

2. Check the YL wire for an open between
Blower Speed Control and splice $231.

. Check the YL wire for a wire to wire short
to voltage.

. Check the YL wire for an open between
splice $231 and the Blower Resistors.

{Continued in next column)

(Not Depressed) 9. If voltage is not present at the YL, BK or
GN wires, check for an open Blower
Measur Correct ae
imss Voltage | For Diagnosis Resistors’ Safety Switch.
ONE 10, If voltage is not present at the YL, BK,
N GN and BU wires, do Test C.
fee Battery See1
am = Battery See 2 C: BLOWER MOTOR TEST
un ‘Measure: VOLTAGE
+ AIC Select Switch: OFF (Not Depressed) At: BLOWER MOTOR CONNECTOR
Frans (Disconnected)
An 0 Volts See3 Conditions:
+ Ignition Switch: RUN
IGNBRET] Battery | 5004, 5,9,8 + AIC Select Switch: ON
(YL) 10 * Blower Speed Control: HIGH
4 (GN/BR)&1 See 5,8, 9,8
Battery LE Correct .
(BK) 10 Voltage | ForDiagnosis
MORE] Battery, [re BUE Ground | Battery See 1
BU&BR | Battery See2 |
4 (GNIBR)&3
(80) Battery See7&10 + If both voltages are correct, replace the

Blower Motor.

1. Check the BU wire for an open. If wire is
good, recheck Test B.

2. Check the BR wire to ground G200 for an
open.

6421-0 A/C AIR DELIVERY CONTROL
HEATING AND AIR CONDITIONING (FRESH/RECIRCULATING AIR CONTROLS)

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CIRCUIT OPERATION

‘When the Ignition Switch isin RUN, battery
voltage is applied to terminal 7 of the Control
‘Switches, the normally open contacts of the LH
Fresh/Recirculating Air Relay, and the nor-
‘mally closed contacts of the RH Fresh/Recir-
culating Air Relay. If the Fresh/Recirculating
Air Switch is not depressed (open), battery volt-
age is applied through the normally closed con-
tacts of the RH Fresh/Recirculating Air Relay
to both Fresh/Recirculating Air Flap Door
Motors and then to ground through the nor-
mally closed contacts of the LH Fresh/Recir-
culating Air Relay. Both motors operate and
move the Fresh/Recirculating Air Flap Doors
to position A, allowing fresh air to enter the
blower.

‘When the Fresh/Recirculating Air Switch is
depressed (closed), battery voltage is applied
through the switch to both the LH and RH
Fresh/Recirculating Air Relay coils. Both
relays are energized. Battery voltage is then
applied through the closed contacts of the LH
Fresh/Recirculating Air Relay to the Flap Door
Motors, and to ground through the closed con-
tacts of the RH Fresh/ Recirculating Air Relay.
Since the voltage is now applied to the Flap
Door Motors in the opposite direction, the
motors reverse direction and move the Fresh/
Recirculating Air Flap Doors to position B,
allowing only recirculating air to enter the
blower. Both of the Air Flap Door Motors
remain energized continuously. When the doors
reach the end of their travel, the motors stall
and hold the doors in position,

TROUBLESHOOTING HINTS

A/C AIR DELIVERY CONTROL _ 6421-1
(Continued from previous column}
CYLandWT | Battery Sees

Try the following checks before doing the Sys-
tem Diagnosis.

Check that LH and RH Fresh/Recirculating
Air Relays are firmly seated.

Check that LH and RH Fresh/Recirculating
Air Relay pigtail connectors are properly
mated.

Go to Heating and Air Conditioning (6410-0)
System Check for a guide to normal operation.
Go to System Diagnosis for diagnostic tests.

SYSTEM DIAGNOSIS

Do the tests below If the Fresh/Recirculating
Air Flap Doors do not operate.

A: FRESH/RECIRCULATING AIR FLAP
DOOR MOTOR VOLTAGE TEST

‘Measure: VOLTAGE
At: FRESH/RECIRCULATING AIR FLAP DOOR

= If all voltages are correct, replace the
inoperative motor.

1. Check the WT wire for an open. If wire is
good, do Test B for RH Air Relay.

2. Check the YL wire for an open. If wire is
good, do Test B for LH Air Relay.

3. Do Test B for both Air Relays.

B: FRESH/RECIRCULATING AIR RELAY
VOLTAGE TEST
Measure: VOLTAGE ]
At: FRESH/RECIRCULATING AIR RELAY
CONNECTOR (Disconnected)
Conditions:
+ Ignition Switch: RUN
+ Fresh/Recirculating Air Switch:
DEPRESSED (RECIRCULATING)
+ Fresh/Recirculating Air Flap Door Motor
Connectors: CONNECTED

MOTOR PIGTAIL CONNECTORS mae De
(Disconnected) dats ct | For Diagnosis,
Conditions: Betwoen | Voltage ==]
+ Ignition Switch: RUN 87 (GNIBR)
+ Fresh/Recirculating Air Switch: and Ground | Battery Seel
RELEASED (FRESH) S6(GNIand | -
Measure Correct | gor pi Ground astery
iagnosis
Between | Voltage IT
| Battery Sce3
wrong | Battery me. 85 (BR)
Sr eciGNand | Battery Seo3
WT and YL | Battery See? 87a(BR) y
+ Fresh/Recirculating Air Switch: (Continued on next page)

DEPRESSED (RECIRCULATING)

YL and

aa Batter

See 3

(Continued in next column)

LE

6421-2 A/C AIR DELIVERY CONTROL

(Continued from previous page)

+ [fall voltages are correct, replace the sus-
pect Fresh/Recirculating Air Relay.

1. Check the GN/BR wire for an open.

2. Check the GN wire back to the Control
‘Switches for an open. If wire is good, do
Test C.

3. Check the BR wire for an open.

C: CONTROL SWITCHES VOLTAGE
TEST

Measure: VOLTAGE

At: CONTROL SWITCHES CONNECTOR

(Disconnected)
Condition:
+ Ignition Switch: RUN
Measure Correct
Between Vottage | Fer Diagnosis
TIGNIBR) &
Gro Battery Sel
TIGNIBR) E
SIGN) Battery See 2

+ If both voltages are correct, replace the
Control Switches.

1. Check the GN/BR wire for an open. If wire
is good, check that connector 0204 is
properly mated.

2. Check the GN wire for an open between
the Control Switches and the LH and RH
Fresh/Recirculating Air Relays

6452-0 A/C COMPRESSOR CONTROLS

HEATING AND AIR CONDITIONING (COMPRESSOR CONTROLS)

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CIRCUIT OPERATION

When the Ignition Switch is in RUN, battery
voltage is applied through Fuse 20 to the A/C
Select Switch. When the A/C Select Switch is
pressed, voltage is applied to terminal 3 of the
Evaporator Temperature Regulator. The Evap-
‘orator Temperature Regulator applies voltage
from terminal 2 to the Compressor Clutch
through the High Pressure Cut-Out Switch
and Low Pressure Cut-Out Switch.

The High Pressure Cut-Out Switch will disen-
gage the Compressor Clutch when refrigerant
pressure rises above 385 PSI (26.6 Bar). The
Evaporator Temperature Regulator will detect
the High Pressure Cut-Out Switch opening at
terminal 5 and will turn off the output voltage
at the Compressor Control terminal. The Evap-
‘orator Temperature Regulator will not allow
the Compressor Clutch to be turned on again
until circuit continuity has been restored
between terminals 5 and 2. The Evaporator
‘Temperature Regulator tests for continuity by
momentarily applying voltage at the Com:
pressor Control every 8 to 10 seconds. Voltage
at the A/C Clutch Monitor Input indicates con-
tinuity. The Evaporator Temperature Reg-
ulator will continue to apply voltage at the
Compressor Control output, which will energize
the Compressor Clutch.

A/C COMPRESSOR CONTROLS

Clutch Diode
Whenever the Compressor Clutch is deener-
gized, the collapsing magnetic field induces a
voltage in the winding. The Clutch Diode pro-
vides a path for the resulting current.

AIC On Input

When the Compressor Clutch is turned on,
voltage is applied to terminal 29 of the
Motronic Control Unit. The Motronic Control
Unit uses this signal increase idle speed to com-
pensate for the increased engine load from the
‘Compressor Clutch engaging.

TROUBLESHOOTING HINTS

+ Try the following checks before doing the Sys-
‘tem Diagnosis.

1. Check Fuse 20 by visual inspection.

2. Check that Compressor Clutch connector is
firmly seated.

+ Go to Heatingand Air Conditioning (6410A-0)
System Check for a guide to normal operation.

+ Goto System Diagnosis for diagnostic tests.

SYSTEM DIAGNOSIS

+ Do the tests listed for your symptom in the
‘Symptom Table below.

» Tests follow the Symptom Table.

SYMPTOM TABLE

Compressor Clutch

does not engage A

Engine idle speed is

not high enough

when Compressor D

Clutch engages

A: AIC ISOLATION TEST (TABLE 1)

‘Measure: VOLTAGE

At: EVAPORATOR TEMPERATURE
REGULATOR (Disconnected)

Conditions:
«+ Ignition Switch: RUN (Engine need not
be running)
+ AIC Selector Switch: ON (Depressed)
Measure Correct
nn Voltage | For Diagnosis
3&Ground | Battery See 1

+ IE voltage is correct, go to Table 2.
1. Goto'Test E.

——— LL — _-_---mm KIA
A/C COMPRESSOR CONTROLS 6452-3

A: AIC ISOLATION TEST (TABLE 2) B: PRESSURE SWITCH TEST C: EVAPORATOR TEMPERATURE
‘Connect: FUSED JUMPER ‘Measure: RESISTANCE REGULATOR VOLTAGE AND
At: EVAPORATOR TEMPERATURE At: EVAPORATOR TEMPERATURE RESISTANCE TEST
REGULATOR (Disconnected) REGULATOR CONNECTOR Measure: RESISTANCE
Condition (Disconnected) At: EVAPORATOR TEMPERATURE
* Ignition Switch: RUN Conditions: REGULATOR CONNECTOR
+ AIC Selector Switch: ON (Depressed) + Ignition Switch: OFF (Disconnected)
Connect o + Negative Battery Terminal: Conditions:
Across | Correct Result | For Diagnosis DISCONNECTED + Ignition Switch: OFF
F = ms | en | + Negative Battery Ter
Compressor | ee | For Diagnosis DISCONNECTED
183 cher See == Measure Correct 3
Engages Approxi- Messe | esistanco | For Diagnosis
+ Ifresultis correct go to Test C. 2&Ground | mately 3to4 Seel = =
ohms Approxi-
1. Goto Test B. SEK
eh + If measurement is correct replace the 18 Ground | ASK ony Seel
Evaporator Temperature Regulator. Abe 21°
1. Check for an open Low Pressure Cut-Out Too
Switch, High Pressure Cut-Out Switch, 4&Ground || See 2
A/C Temperature Switch, or associated ohms
wiring (see schematic). If High Pressure SE Ground | Less than0.5
Cut-Out Switch is open, check refrigerant 6&Ground | ohms er
pressure to be sure it is normal before Less than 0.5
replacing the switch. If the switch and | 582 | ohms Ses
related wiring is OK, m- 7
Che. in + If all resistances are correct but Com-
pressor Clutch does nat operate normally,
replace the Evaporator Temperature Reg-

ulator.

1. Check the BK/WT wire for an open or a
short to ground (see schematic). Check
the BR wire for an open (see schematic). If
wires are good, replace the Evaporator
‘Temperature Sensor.

2. Check the BR wire for an open (see sche-
matic).

3. Check BK/YL for an open between termi-
nal 5 and the Low Pressure Cut-Out
Switch.

SR

A/C COMPRESSOR CONTROLS

6452-4

D: IDLE SPEED CONTROL VOLTAGE
TEST

E: A/C SELECT SWITCH VOLTAGE
TEST

‘Measure: VOLTAGE

‚At: MOTRONIC CONTROL UNIT
CONNECTOR (Connected — Universal
Adapter}

Conditions:
* Ignition Switch: RUN
+ AIC Control Panel: A/C ON
+ Temperature Outside Car: Above 60

degrees F (16 degrees C}

‘Measure: VOLTAGE

At: CONTROL SWITCHES CONNECTOR
(Connected)

Condition
+ Ignition Switch: RUN
+ AIC Control Panel: A/C ON
+ Temperature Outside Car: Above 60

degrees F (16 degrees C)

Measure Correct i
Between Voltage | For Diagnosis
WT) E
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Measure Correct
ro | Yatage | ForDisgnosis
40(BKIGY) &
a Battery See 1
AWUCHE
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+ Ifthe voltageis correct, repairireplace the
Motronic Control Unit.
1. Check for an open in the BL/WT and BK/
RD wires.

2. Check for an open in the VGY and BK/
VI wires.

+ Ifboth voltages are correct, check connec-
tions at Evaporator Temperature Reg-
ulator.

1. Check for an open in the WT and GN/BR

2, Replace the A/C Select Switch.

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CIRCUIT OPERATION

With the Ignition Switch in ACOY, RUN or
START, Fuse 12 provides voltage to turn on
‘the three components in the system. When the
Radio Switch is on, voltage is applied to the
Radio, the Power Antenna Raise/Lower Input,
and the Amplifier. This voltage is used to con-
trol the individual unit's main power supply.

When the Raise/Lower Input of the Power
Antenna receives voltage, power is supplied
from Fuse 28 to run the motor and raise the
Antenna. When voltage is no longer present at
the Raise/Lower Input, the Antenna is lowered.

Fuse 21 constantly supplies voltage to the
Memory Power Input of the Radio. This allows
the Radio to maintain the present settings
while itis turned off.

‘The Amplifier receives constant power at ter-
minal 11 from Fuse 27. When the Radio is on,
voltage is applied to terminal 13 to enable the
Amplifier.

‘The actual Radio signal originates at the
Antenna. It is supplied to the Radio, processed,
and output from the Left Channel and Right
Channel Outputs. The signal is then input to
the Left Front, Left Rear, Right Front and
Right Rear Inputs to the Amplifier. After
amplification, the signal is output to the corre-
sponding speakers.

TROUBLESHOOTING HINTS
+ Try the following checks before doing the Sys-
tem Check.

1. Check power input to the Radio by observ-
ing if Instrument Cluster Indicators light.

2. Check power input to Antenna by observ-
ing the Cigar Lighter.

3. Check memory power to Radio by checking
‘operation of the Glove Box Light.

4. Check power input to the Amplifier.

5. Check that the Antenna is properly con-
nected.

6. Before troubleshooting a suspect Speaker,
check all connections to that Speaker.

7. Ifdisplay shows “CODE” and Radio will not
operate, the individual Anti-Theft Code
must be entered. Refer to “Anti-Theft”
instruction booklet.

8. Check Radio Fuse located on back of Radio.

9. Check Amplifier Fuse located on back of
Amplifier.

10. For Radios without sound system: If a
speaker is inoperative, switch with a good
speaker. If still inoperative, check related

iring. Remove Radio for service if wiring
is OK.

SYSTEM CHECK

+ Use the System Check Table as a guide to
‘normal operation.

+ Refer to System Diagnosis for

list of symp-

‘toms and diagnostic steps.
SYSTEM CHECK TABLE
ACTION NORMAL RESULT
With Ignition Antenna extends.
Switch in RUN, turn | Digital display
Radio ON. lights.

Sound is emitted
from all Speakers.
Sound volume varies
from front to rear.

Operate Fader
Control.

+ Refer to System Diagnosis when a resultis not

normal.

SYSTEM DIAGNOSIS

= Do the tests listed for your symptom in the
‘Symptom Table below.

+ Tests follow the Symptom Table.

SYMPTOM TABLE
‘SYMPTOM FOR DIAGNOSIS

Radio does not work | Do Test A
(no display, no
sound)
Digital display Do Test B
lights, but there is
no sound.
LH Speakers or RH | Do Test C
Speakers do not
operate.

(Continued on next page)

RADIO/ANTENNA _6500A-1

(Continued from previous page)
“Antenna doesnot | Check ground wire A
Sedo, Mo Mie B: AMPLIFIER POWER TEST
sure ground G302 is Measure: VOLTAGE
clean and tight. At: AMPLIFIER CONNECTOR (Disconnected)
Chock wire to Power Conditions:
Antenna for opens. If + Ignition Switch: RUN
OK, replace Power + Radio: ON
Antenna, Measure Correct
For Diagnosis
‘An individual Do Test D Between. Voltage ii
Speaker does not aaa >
operate.
me — 1818 Ex]
Excessive noise
| comes from all 13 8 Ground ‘Sees
| Speakers. 1810 ‘Seed

A: RADIO POWER TEST

Measure: VOLTAGE
At: RADIO CONNECTOR C216
(Disconnected) or CONNECTOR C215

+ Ifall voltages are correct, go to Test C.

1. Check power supply wire for an open.

2. Check Amplifier ground to Amplifier for
an open to ground. Make sure ground
G200 is clean and tight.

3. Check Amplifier “Radio On” wire for an
open.

4. Check wire from terminal 10 for an open
to ground. Make sure ground G302 is

(Disconnected)
Condition:

+ Ignition Switch: RUN

Measure Correct a
Between Voltage | For Diagnosis
C216 &

coed Battery | ei

CT

A Battery See2

C215/2 8,

a Battery Ses

+ Ifall voltages are correct, check wire from
connector 0215 to Radio for an open. If
wire is OK, remove Radio for service.

1. Check power input wire for an open

2. Check ground wire for an open to ground.
Make sure ground G200 is clean and
tight.

3. Check memory power supply wire for an
open.

clean and tight,

: FADER SIGNAL TEST (WITH SOUND
SYSTEM)
‘Measure: VOLTAGE
At: AMPLIFIER CONNECTOR (Disconnected)
Conditions:
+ Ignition Switch: RUN

+ Radio: ON
Pa | Vers | ForDiagnosis
148 Ground Mr Set
198 Ground | Sel
De Grand [| 501

+ If all voltages are correct but sound was
not present, remove Amplifier for service.

1. Check betweem Radio and Amplifier for
an open in the wiring. If wire is OK,
remove Radio for service.

(Continued on next page)

6500A-2_RADIO/ANTENNA
: SUSPECT SPEAKER TEST ANTENNA NOISE TEST
Connect: OHMMETER Measure: RESISTANCE
At: SUSPECT SPEAKER (Disconnected) At: ANTENNA _
Condition: Measure Correct ” i
+ Ohmmeter set on Rx 1 scale or Diode Between | Resistance | For Diagnosis
Check Scale
Action | Correct Result | For Diagnosis Antenna PIE | Lessthans | gui
Connect Ground Go
Ohmmeter A
across | See | ge Anta | Greater than 1
Mie pops amp. yg [Me open] Seo
Terminals Pase circuit)

«If the result is correct, check wires to the
‘Amplifier or Radio for opens or shorts. If
OK, check wires between Amplifier (if
equipped) and the Radio. Remove Radio
for service.

1, Replace the suspect Speaker.

E: NOISE DIAGNOSIS
With Radio on and noise present, unplug the
Antenna at the back of the Radio.

+ If noise is no longer present, it was being
picked up by the Antenna. Perform Antenna
Noise Test.

+ If noise persists, it is coming in the Radio
wiring, Refer to the following Noise Symp-
tom Table.

+ If both resistances are correct, check the
hood ground strap. If OK, substitute dif-
ferent Antenna at Radio. If good, replace
Antenna. If noise is still present, refer to
Noise Symptom Table.

1. Check ground contact at Antenna base. If
necessary, install a braided ground strap
from the Antenna Base to Chassis
‘ground. Check for an open in the Antenna
Cable.

2. Check for a short to ground at the
Antenna or Antenna cable.

NOISE SYMPTOM TABLE

RADIO/ANTENNA _6500A-3

‘SYMPTOM

POSSIBLE CAUSE

REPAIR ACTION

Harsh popping or crackling noise present when
ignition on-changes with engine rpm.

Ignition Noise

+ Check for proper distributor cap shielding.
+ Check shielding ground strap. If not present,

install
Check for defective spark plug or spark plug
wire,

Reroute spark plug wires laying against any-
thing that could be transmitting noise to the
Radio (wiring or sensor leads traveling into
the passenger compartment).

Check enginelfirewall ground strap and engine
hood/body ground strap.

Check if engine hood is closing property.
Connect dedicated ground strap to Radio.
Replace distributor cap and rotor.

High whine or howling that changes with engine
rpm.

‘Alternator noise

+ Connect dedicated ground strap to Radio.

Run a direct wire from Battery to Alternator.

AM only is weak and noi:

[AM alignment

Remove Radio for service.

FM only is weak and noisy.

FM alignment

Remove Radio for service.

6571-0 CRUISE CONTROL

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7000-0 COMPONENT LOCATION VIEWS

1 FLUIDLEVEL
SWITCH

DISTRIBUTION
ES

Figure 1 - LH Rear of Engine igure 3 - LH Rear of Engine
Compartment Compartment

Figure 2-LH Rear of Engine Compartment

Figure 4 - Behind Fresh Air Intake
Cowl

(inside Power Di

tion Box)

= x THROTTLE

A

EVAPORATIVE ~
PURGE VALVE. ¿2
mk =

Figure 6 - LH Side of Engine

FUEL PUMP

DIAGNOSTIC
CONNECTOR

OXYGEN SENSOR
HEATER RELAY

Figure 1 - Forward of LH Shock Tower
(Relay Cover Removed)

COOLANT
LEVEL
SWITCH

Figure 2 - Forward of LH Shock Tower

Figure 3 - LH Front of Engine

COMPONENT LOCATION VIEWS 7000-1

ABS
HYDRAULIC
UNIT

IDLE SPEED

ACTUATOR

Baxi

Figure 5 - LH Front Corner of Engine
Compartment

CRUISE
CONTROL
ACTUATOR

Figure 6 - Lower LH Side of Engine

Compartment

7000-2 COMPONENT LOCATION VIEWS

OUTSIDE
‘TEMPERATURE
SENSOR

Figuro 1 - Lower LH Front of Engi
Bumper

BOARD
COMPUTER
HORN

CAR 3
aaa E

FAN

AUXILIARY FAN
NORMAL SPEED
BLOWER RESISTOR

Figure 2 - Behind LH Corner of Front
Bumper

Grille

Figure 3 - Behind LH Side of Front

Figure 4 - Behind Center of Front Radiator

DUAL TEMPERATURE
SWITCH

EP

Figure 5 - Top RH Side of Radiator

ieee E
FUEL ‘COOLANT TEMPERATURE
B INJECTOR(FN) à SENDER

‘COOLANT TEMPERATURE
SENSOR

Da SB

Figure 6 - Top Front of Engine

COMPONENT LOCATION VIEWS 7000-3

Figure 1 - RH Front of Engine

Figure 2 - Lower RH Front of Engine

COMPRESSOR
CLUTCH DIODE

COMPRESSOR.
CLUTCH

igure 3 - Lower RH Front of Engine

OIL PRESSURE
SWITCH

23 5
Figure 4 -Lower RH Front of Engine

=

WASHER
Low pressure À FLUID LEVEL
CUT-OUT à SWITCH
SWITCH

HIGH
PRESSURE
cut-out

SWITCH

Figure 5 - RH Front Comer of
Engine Compartment

Figure 6 - RH Side af Engine
Compartment

7000-4 COMPONENT LOCATION VIEWS

BATTERY JUNCTION
BLOCK (COVER PULLED
BACK)

Figure 1 - RH Side of Engine Figure 3 - RH Rear of Engine Figure 5 - LH Front Brake Assembly
Compartment ‘Compartment (Wheel Removed)

BACK UP
LIGHT SWITCH E

rasta

Figure 2- Lower RH Rear of Engine Figure 4- LH Front Spindle Assembly Figure 6 - RH Side of Transmission

À SPEEDOMETER
À senoen

Figure 2 - Above LH Front Door Jamb
Switch

COMPONENT LOCATION VIEWS 7000-5

Y interior
À Licht
TIMER

CENTRAL
LOCKING

Figure 3 - LH Kick Panel
(Speaker Removed)

E 4 i Je

Figure 4 - Below LH Front Speaker

OVER VOLTAGE

É PROTECTION
RELAY

A } , A

Figure 5 - Behind LH Side of Dash

0302 (ACCESSORY
CONNECTOR)

4 à =

Figure 6 - Behind LH Side of Dash

7000-6 COMPONENT LOCATION VIEWS

START AELAY
/ (AUTOMATIC

ABS ELECTRONIC
CONTROL
UNIT

‘ON-BOARD
‘SEATBELT COMPUTER
WARNING = RELAY BOX
TIMER

Figure 6 - Behind LH Side of Dash

Figure 2 - Behind LH Side of Dash Figure 4 - Behind LH Side of Dash

COMPONENT LOCATION VIEWS _7000-7

p HORN BRUSH!
SUP RING

‘COMBINATION
SWITCH

WATER
SHUT-OFF
SOLENOID

Figure 2 - LH Side of Evaporator
Housing

aca

EVAPORATOR
TEMPERATURE
REGULATOR

EVAPORATOR
TEMPERATURE
SENSO}
Gus

ae
Figure 3 - LH Side of Evaporator
Housing

FRESH/
RECIRCULATING
AIR FLAP DOOR
MOTOR

FRESH/RECIRCULATING
AIR RELAYS

HOT WATER
CUT-OFF SWITCH

SUNROOF
MOTOR

7000-8 COMPONENT LOCATION VIEWS

p ‘ON-BOARD
HAZARD COMPUTER
switch NN MODULE

Figure 3- Behind Center of Dash

SAFETY
SWITCH
AUTOMATIC
TRANSMISSION
RANGE SWITCH

Figure 4 - Below Center Console

Figure 2 - Behind Center of Dash

WINDOW
CIRCUIT
BREAKER

eres

Figure 6 - Below Rear of Center Console

AUTO.CHARGING
FLASHLIGHT
CONNECTOR

‘CRUISE CONTROL
UNIT

Figure 2 - Behind RH Side of Dash, Above Glove

COMPONENT LOCATION VIEWS _ 7000-9

WINDOW
MOTOR

Figure 5 - Inside LH Front Door
(LH Shown; RH Similar)

i a

DRIVERS EX’
N DOOR HANDLE
= switcH

eme

Figure 4 - Above RH Front Door Jamb Figure 6 - Inside Rear of LH Front Door

7000-10 COMPONENT LOCATION VIEWS

WV esoo

UNLOCK INHIBIT A
‘C402 (AM)

SWITCH (LH)

(BH FAONT DOOR
MICRO SWITCH (RH)

size

610909 9

Figure 5 - At Base of RH “B" Pilar

Figure 1 -Inside Rear of LH Front Figure 3 - Inside LH “8” Pilar
Door (LH Shown; RH Similar) (LH Shown; RH Similar)

DOORLOCK MOTOR „
(BEHIND PANEL) 0

ce

Figure 6 - Below LH Side of Rear Seat

Rear of LH Front

COMPONENT LOCATION VIEWS 7000-11

GAS FILLER
Lock MOTOR

FUSIBLE
LINK A.

LEFT TANK
FUEL SENDER

Figure 1 - Below LH Side of Rear
Seat

FUEL TANK 5 L

SENDER

TRUNK LID
| LOCK MOTOR

Figure 4- LH Side of Trunk

Figure 2 - Below RH Side of Rear
Seat

7000-12 COMPONENT LOCATION VIEWS

‘TRUNK LIGHT
SWITCH

Figure 1 - LH Rear of Trunk Lid

8000-0 SPLICE LOCATION VIEWS

This index lists all the splices in the vehicle, the harness location of each splice, and the page on which each
splice appears. The drawings after the index show how the harnesses are routed through the vehicle and the
location of the splices on the harness.

SPLICE HARNESS PAGE SPLICE HARNESS PAGE
NUMBER NUMBER
$100 MAIN 8000-2 $224 MULTI- NOT SHOWN,
$101 ENGINE 8000-3 FUNCTION
$102 MAIN 8000-2 CLOCK
$103 MAIN 8000-2 $225 MULTI- NOTSHOWN
$104 ENGINE 8000-3 FUNCTION
$105 ENGINE 8000-3 CLOCK
$106 ENGINE 8000-3 $226 AIC NOT SHOWN
$107 ENGINE 8000-3 5228 CRUISE NOTSHOWN
$108 ENGINE 8000-3 CONTROL
$109 ENGINE 8000-3 $229 AIC NOT SHOWN
S110 AIC NOT SHOWN $230 MAIN 8000-2
sit ENGINE 8000-3 5231 MAIN 8000-2
$112 ENGINE 8000-3 $232 MAIN 8000-2
$113 ENGINE 8000-3 $233 MAIN 8000-2
S114 MAIN 8000-2 5234 MAIN 8000-2
S115 MAIN 8000-2 $235 MAIN 8000-2
S116 MAIN 8000-2 $238 MAIN NOT SHOWN
S118 MAIN 8000-2 $239 MAIN 8000-2
S119 MAIN 8000-2 $240 AIC NOT SHOWN
S201 ON-BOARD 8000-6 $241 MAIN 8000-2
COMPUTER $250 AIC NOT SHOWN
S202 ON-BOARD 8000-6 $251 AIC NOT SHOWN
COMPUTER $252 AIC NOT SHOWN
$207 MAIN 8000-2 $300 DOOR 8000-4
$209 MAIN 8000-2 $301 DOOR 8000-4
$210 MAIN 8000-2 s302 DOOR 8000-4
s211 MAIN 8000-2 $303 DOOR 8000-4
S212 MAIN 8000-2 $304 DOOR 8000-4
$213 MAIN 8000-2 $305 DOOR 8000-4
$215 MAIN 8000-2 S306 INSTRUMENT 8000-5
5219 INSTRUMENT 8000-5 PANEL,
PANEL S307 INSTRUMENT 8000-5
S221 INSTRUMENT 8000-5 PANEL
PANEL $309 DOOR 8000-4
$223 CRUISE NOTSHOWN $310 MAIN 8000-2

CONTROL $313 RADIO NOT SHOWN

SPLICE

$316
$319
$322
$323
$324
$326
$329
$330
$332
$333
$340
$341
5342
$345

$400

$402
$403

$404

sai
$420

$501
$502
$503
$504
$700
$701
$702
5703

HARNESS

MAIN
MAIN
DOOR
DOOR
MAIN
MAIN
MAIN
MAIN
DOOR
DOOR
MAIN
MAIN
DOOR
RADIO

RADIO

DOOR
RADIO

RADIO

DOOR
RADIO

DOOR
DOOR
DOOR
DOOR
ENGINE
ENGINE
ENGINE
ENGINE

PAGE
NUMBER
8000-2
8000-2
8000-4
8000-4
8000-2
8000-2
8000-2
8000-2
8000-4
8000-4
8000-2
8000-2
8000-4
NOT
SHOWN
NOT
SHOWN
8000-4
NOT
SHOWN
NOT
SHOWN
8000-4
NOT
SHOWN
8000-4
8000-4
8000-4
8000-4
8000-3
8000-3
8000-3
8000-3

SPLICE LOCATION VIEWS 8000-1

INDEX

8000-2 SPLICE LOCATION VIEWS

MAIN HARNESS SPLICE LOCATIONS

6200

TO ENGINE
COMPARTMENT

To REAR
OF CAR

TO CLUSTER
AREA — 239

s213

*

ro
STEERING
COLUMN
AREA

S235 MAY NOT EXIST
ON ALL VEHICLES

$102 POWER $230
DISTRIBUTION $340
BOX

$233 s211
5209 $212
$319 $210
$207 $215

SPLICE LOCATION VIEWS 8000-3
ENGINE HARNESS SPLICE LOCATIONS

ENGINE
E y
©

Î

DIAGNOSTIC

CONNECTOR

s106

\

stoa siz0

* EARLY PRODUCTION
@ LATE PRODUCTION

8000-4 SPLICE LOCATION VIEWS

DOOR HARNESS SPLICE LOCATIONS

MIRROR 5507

LOCK MOTOR

SPLICE LOCATION VIEWS 8000-5
RNESS SPLICE LOCATIONS

00)

Sel

O

8000-6 SPLICE LOCATION VIEWS

ON-BOARD COMPUTER HARNESS SPLICE LOCATIONS

8500-0 _CONNECTORVIEWS 2.5iENGINE

DIAGNOSTIC CONNECTOR

Pin | Wire | Wire Circuit and Component Connected

a BK _| Ignition Coil, Motronic Control Unit
Ce WTIEK | SRS Connector (Not Useo)

3 5 | won | Sere ena des Serve teva
11 | 25 | SKIL | Starter. Stan Signal (50)

12 [75 | au | Charge, Aitemator(D+)

| 25 RD | Battery)

15 | 5 | WIL | Motronic Control Unit (AXD)

16 | 15 | GNAWT | Oxygen Sensor

18 | 5 | GNIBU | Motronic Control Unit (Programming Voltage)
19 | 158A | ER | Ground Distribution (G109)

20 | 5 | WTA | Motronic Control Unit (FXO)

DIAGNOSTIC CONNECTOR FACE

CONNECTOR VIEWS 8500-1
ACCESSORY CONNECTOR
CIRCUITS USING C302 (ACCESSORY CONNECTOR)
TERMINAL CIRCUIT TERMINAL CIRCUIT
A Not Used N Not Used
B Not Used o Not Used
© | Anti-Lock Braking P| NotUsed
D | Centrattocking a |Powerwindows &
E: Not Used Sunroof
F |NotUsed R |cmiseconto!
G Anti-Lock Braking s Anti-Lock Braking
H On-Board Computer T Not Used
1 Not Used U Not Used
3 |NotUsed v | Radio
K Not Used w Radio
L Not Used x Radio
Figure 1.0302 (Accessory Connector) M | NotUsed Y [Radio
Front View Under LH Side z | Power antenna

of Dash Ahead of Pedal Assembly

8500-2 CONNECTOR VIEWS

8950002.04
= 1 À = 5
CEEREREEREEE EEE) 6. =
ESA AAA ji de

= 16 20

Mating Face
ABS CONTROL UNIT

Wiring Face
AMPLIFIER
(SOUND SYSTEM)

000012

QOOOU
EGE

Mating Face
ABS NEUTRAL LE Te]

INPUT RELAY

860000

Wiring Face

Wiring Face sen AUXILIARY FUSE,

ABS HYDRAULIC UNIT

= m] —

EBEGEE GOBaE
(22089 ajelajejeje]

Mating Face

£ Ly

Wiring Face
Mating Face e BAROMETRIC PRESSURE
ACTIVE CHECK CONTROL SENSOR

AIR FLOW METER

CONNECTOR VIEWS

8500-3

1 4

Wiring Face
CHIME MODULE (C1)

1 4

Wiring Face
BLOWER RESISTORS

Wiring Face
BLOWER SPEED CONTROL

Wiring Face
CRUISE CONTROL
unır

1 2 3 4
i

666 à

Wiring Face

CHIME MODULE (C2)

14 8

Wiring Face
CENTRAL LOCKING CONTROL UNIT

Wiring Face

CONTROL SWITCHES

0016.05

Mating Face
CYLINDER IDENTIFICATION
SENSOR

1

Wiring Face
DOOR LOCK MOTOR

8500-4 CONNECTOR VIEWS

6 s 4
©® i
lo) I
]
Wiring Face 3 I ‘Mating Face
1
DUAL TEMPERATURE SWITCH Willig nice FRESH/RECIRCULATING AIR RELAY
EVAPORATOR TEMPERATURE
REGULATOR,

Wiring Face
ENGINE SPEED SENSOR

2090001.08

Mating Face
PORATIVE
PURGE VALVE RELAY

Wiring Face
FOG LIGHT SWITCH

0000017.00

Wiring Face

FRONT TURN/PARK LIGHT

LATE PRODUCTION
for 3251/325is, 326ix

2 3

1
r
(OO

Wiring Face

FRONT TURN/PARK LIGHT

All 328ic, M3
EARLY PRODUCTION
for 3251/325is, 325ix

CONNECTOR VIEWS _ 8500-5

8090020.00

2
OO

[1]
Lal 00 00
Wiring Face Mating Face ana

Mating Face
INSTRUMENT CLUSTER (C5) MAIN RELAY MIRROR CONTROL St

cH

8550001 .02

EGAG AGA AGaLaRaAaaaa)
pass

AAA

Mating Face Mating Face

INTERIOR LIGHT TIMER CONTROL MOTRONIC CONTROL UNIT
ALL EXCEPT M3

350002

Gada sAaceooaaaaae
Oca |
Mating Faco

MOTRONIC CONTROL UNIT
LIGHT SWITCH us)

Wiring face

8500-6

CONNECTOR VIEWS

nar
o. ap

86,

318 31
30a

Wiring Face

_OIL LEVEL SENSOR Wiring Face

OVER VOLTAGE
PROTECTION RELAY

tg + :

ca

es, = =

PP
vt ae

POWER WINDOW SWITCHES

Mating Face Mating Faco
ON - BOARD COMPUTER MODULE

OXYGEN SENSOR HEATER RELAY

I
0

Wiring Face
REAR DEFOGGER SWITCH

CET Rés

Wiring Face Wiring Face

ON - BOARD COMPUTER
RELAY BOX (C2)

POWER MIRRORS

osa.

@©
So

Wiring Face

REAR LIGHT ASSEMBLY

CONNECTOR VIEWS 8500-7

e. ns ss
— (6088
aaa
EEE =
2 a
‘ting Fics EAR WINDOW
BLOWER Mating Face
sean cer asset
START BELAY
sn u
|
|
2
ass aa men

REAR LIGHTS CHECK RELAY (C1)

REAR WINDOW BLOWER RELAY

SUNROOF MOTOR (cl)

Wiring Face
REAR LIGHTS CHECK RELAY (C2)

Mating Faco

SEATBELT WARNING TIMER

3
Wiring Face
SUNROOF SWITCH

8500-8 CONNECTOR VIEWS

Wiring Face
THROTTLE SWITCH

1 6

p0DD00
Y
Wiring Face
TRUNK LID LOCK MOTOR

foo
allo Offs
so olls

Wiring Face
WIPER MOTOR

Wiring Face
cios

Wiring Face
e103

Mating Face

eno
en

ena

Wiring Face
cıoz

Wiring Face

ciao

CONNECTOR VIEWS

8500-9

| ; - JODIDO
Exa] ¡000009 De
dub
C152, C183, 0154. en

Wiring Face

c204

7 13

6
O00000 O) 1 Oc
s[Looooof:

2 a
Wing Fe 2
Wiring Face c202 mars
cist
i mG ann ome
Boo 688868 loooocoel
AS à

Wiring Face
‘Wiring Face Wiring Face
200

c210
0203 us

8500-10 _CONNECTOR VIEWS

: 6
OoocoooOl a E
(C0):
Wiring Face Y
Wiring Face ae Wiring Face
rst 209
1380 ae) B070004.00.
0000| fpssseal looocooel
0090! wiring Face
er
22 1 MOQOOOO) ae
[990000 [ 29898] (0000001
a a
tn m. wing Face
_ £240

0204

CONNECTOR VIEWS _ 8500-11

1000000!

Wiring Face

c240

(L00000!

‘Mating Face
0242

000002 09

[16258]
OOOO

Mating Face
0243

303
cao4

a

ES
3 O:
24000

a
Wiring Face

Wiring Face
caos
caos

D0so011.00

(ONO)
© ©

Wiring Face

ca13

1234
¡0000¡
Wiring Face
c421
ca22

Wiring Face
cs03

9000-0

COMPONENT LOCATION CHART

COMPONENTS.

AIC In-Line Fuse

ABS Electronic Control Unit

ABS Hydraulic Unit

Active Check Control Unit

Air Flow Meter

Alternator . .

Amplifier :

Auto-Charging Flashlight . -

Automatic Transmission Range
Switch

Auxiliary Fa .

‘Auxiliary Fan Normal Speed.
Blower Resistor

Auxiliary Fuse .

Backup Light Switch .
Battery...

Battery Junction Block -
Blower Motor

Blower Resistors

Board Computer Horn
Brake Fiuid Level Switch

Brake Switch

Brake Wear Sensors.

Central Locking Control Unit .

Chime Module

Clutch Switch... :

Combination Switch

Compressor Clutch .

Compressor Clutch Diode .

Coolant Level Switch

Coolant Temperature Sender

Coolant Temperature Sensor

Cruise Control Actuator

Cruise Control Unit

Cylinder Identification Sensor

Diagnostic Connector.

Door Lock Motors

Driver's Exterior Door Handie
Switch. .

LH rear side of evaporator housing . .
Behind LH side of dash, above hood release
LH front corner of engine compartment .
Above rear view mirror

LH front of engine compartment, behind air cleaner .

Lower LH front of engine
LH side of trunk, above LH wheel well
Inside LH side of glove box .

At base of gear shift lever
In front of radiator

In front of radiator, LH side of auxiliary fan

LH rear of engine compartment, above brake fluid
reservoir

Top RH side of transmission

In RH rear comer of trunk

RH rear of engine compartment, on RH bulkhead.

Inside fresh air intake cowl.

Inside fresh air intake cowl, inside blower motor
housing

Behind LH corner of front bumper

LH rear of engine compartment, on brake fluid
reservoir

Behind LH side of dash, on brake pedal support. .

On LH front and AH rear brake calipers .

Inside LH kick panel, below LH front speaker

Mounted on LH dash hush panel

Behind LH side of dash, on clutch pedal support

Upper LH side of steering column

Lower RH front of engine, on A/C compressor

Lower RH front of engine, on A/C compressor

In front of LH front whee! well, in coolant reservoir .

Top front of engine, top of thermostat housing
Top ont of engine top of thermostat housing
LH front of engine compartment... . .
Behind AH side of dash, above glove box -

Top RH front of engine, near distributor

Top LH front of engine

Rear part of each door. .

In top rear of LH front door .

Page-Figure

7000- 7-2
7000- 6-3
7000- 1-5
7000- 7-6
7000. 1-2
7000- 21
7000-11-4
7000- 941

7000- 8-4
7000. 2.4

7000- 2-4

7000- 0-1
7000- 4-6
7000-11-5
7000. 4-3
7000- 0-4

7000- 2-2

COMPONENT LOCATION CHART 9000-1

COMPONENTS Paye Figure
Dual Temperature Switch ..... Top RH side of radiator sr 7000 2-8
Engine Speed Sensor........ Lower RH front of engine... ....... 7000 3-2
Evaporative Purge Valve...... Below LH side of throttle body... ..... 7000- 0-6
Evaporator Temperature
Regulator On LH side of evaporator housing 7000. 7-3
Evaporator Temperature Sensor. On LH side of evaporator housing 7000. 7-3
Filter Capacitor ++ Lower LHfront of engine, on alternator . 7000- 2-1
Flasher. . Upper part of steering column silisise 7000 74
Fresh Recteulating Ar Flap Door
Motors. . - Behind A/C face plate, on either side of evaporator

housing. : 7000. 7-4
Fresh/Recirculating Air Relays . . Behind A/C face plate . 2222 7000. 7-5
Fuel Injectors Fe Below intake manifold, at top of each cylinder 7000- 2-6
Fuel Pump Relay ........... Front of LH front shock tower, on bracket 7000- 1-1
Fuel Tank Sender........... Below RH side of rear seat, top of fuel tank ...... 7000-11-2
Fusible Link A RH rear comer of trunk, near battery... .... 7000-11-5
Gas Filler Lock Motor. ....... RH side of trunk, behind RH wheel well... 7000-11-5
Glove Box Light Switch Behind RH side of dash, above glove box 7000- 9-2
Hazard Switch . . In center of dash, above digital radio . 7000. 8-1
High Pressure Cut-Out Switch. . On receiver dryer, behind RH headlight . . 7000. 3-5
Horn Brush/Slip Ring ........ Inupper part of steering column - 7000- 7-1
Horns Near each fog light, behind splash guard . 7000- 2-2
Hot Water Cut-Off Switch... Behind center of dash, near rotary temperature

control sn 7000. 7-5
Idle Speed Actuator......... Top LH side of engine .. . . 7000- 1-3
Ignition Coit TILLED on RH front wheel weil, forward of shock tower... 7000- 4-1
Ignition Key Switch ......... Part of ignition switch, in upper part of steering

column
Ignition Switch Top RH side of steering column . 7000- 7-1
Interior Light Timer Control. .. . Inside LH kick panel, below LH front speaker 7000. 5-3
Left Tank Fuel Sender ....... Below LH side of rear seat, in fuel tank 7000-11-1
Low Pressure Cut-Out Switch . . On receiver dryer, behind RH headlight 7000- 3-5
Main Fuel Pump . Bolow RH side of rear seat, in fuel tank 7000-11-2
Main Relay... .........+.- Front of LH front shock tower, on bracket . ... 7000- 1-1
Motor Relaÿ . . - -. . - : In windshield header, above rear view mirror 7000- 7-6
Motronic Control Unit ....... Behind RH side of dash, above glove box . . . 7000- 9-2
Multi-Function Clock .......- In center of dash, on RH side of digital radio 7000- 8-3
Oil Level Sensor Top LH side of oil pan 7000- 1-6
Oil Pressure Switch . Lower RH front of engine, below of filter 2 7000- 3-4
On-Board Computer Module . . . In center of dash, on RH side of digital radio 7000- 8-1

On-Board Computer Relay Sox... Behind LH side of dash, behind ABS electronic

control unit 7000- 6-1

9000-2

COMPONENT LOCATION CHART

COMPONENTS

Outside Temperature Sensor

Over Voltage Protection Relay -

Oxygen Sensor

Oxygen Sensor Heater Relay
Park Brake Switch .

Power Antenna

Power Distribution Box...
Power Window Circuit Breaker
Pulse Wheels

Rear Lights Check Relay

RH Front Door Micro Switch
Safety Switch. .

Seatbelt Switch

Seatbelt Warning Timer

Speed Detectors
‘Speedometer Sender

‘SRS Connector C240. .

Start Relay

Starter
Sunroof Motor . .
Throttle Switch...
Trunk Lid Lock Motor
Trunk Light Switeh
Unlock Inhibit Switch
Washer Fluid Level Switch
Washer Pump

Water Shut-Off Solenoid,
Window Motors
Wiper Motor.

Page Figure
Inside air intake, near LH fog light o 7000- 2-3
Behind LH side of dash, near ABS Electronic Control

Unit = 7000- 5-5
Lower RH rear of engine compartment, on exhaust

manifold 7000- 4-2
Front of LH front shock tower, on bracket... 2. 7000- 1-1
At base of parking brake... 22: 7000- 8-6
LH side of trunk, behind LH rear wheel well - 7000-11-3
LH rear comer of engine compartment -- 7000- 0-1
On center console, near gear shift lever... 7000- 8-5
On respective wheels, in brake housing
LH side of trunk, above LH wheel well .. . 7000-11-4
In top rear of RH front door petesereee es 70004101
On center console, near gear shift laver :.. 7000. 84
In driver's seatbelt buckle assembly
Behind LH side of dash, on electrical bracket ..... 7000- 6-4
On wheels, in brake housing - . . « 2. 7000- 44
On rear of differential . 7000- 5-1
Behind LH side of dash, RH side of accessory

‘connector 7000. 5-6
Behind LH side of dash, on accessory connector

bracket + cecereeseee 7000- 6-6
Lower LH rear of engine : +... 7000- 0-5
In windshield header, above rear view mirror 7000- 7-6
Below LH side of throttle body . 7000- 0-6
On trunk lock center support a 7000-11-6
Top center of trunk lid recon 7000-12-4
Top rear of LH front door +++ 7000-10-1
Behind RH headlight, in washer fluid reservoir... 7000- 3-5
Ahead of RH front wheel well, on washer fiuid

reservoir . +. 7000- 3-6
LH side of evaporator housing : >< 7000- 7-2
Forward part of each door . .-. - 7000- 9-5
Inside LH side of fresh alrintake cowl . 7000- 0-4

COMPONENT LOCATION CHART___9000-3

CONNECTORS
C101 120 pins}

C103 130 pins)
€104 12 pins}
€110 (3 pins)
C113 (3 pins)
C114 (8 pins)

C115(2 pins)

C131 (4 pins)
C136 (4 pins)
C140 (4 pins)
C142 (1 pin).
C143 (1 pin)
C150 (2 pins)
C151 (2 pins)
C180 (2 pins)
UIC 191 (7 pins}
C200 (10 pins)
C201 (6 pins} .
C202 (13 pins) .
C204 (12 pins)
€205 (2 pins) .

C208 (2 pins) (automatic) E

C208 (2 pins} (manual)
0209 (7 pins} . . -
€210 17 pins)
€212 42 pins)
C213 12 pins)
C214 (2 pins}
C215 (2 pins)...
C216 (2 pins) .
€217 (1 pin)
C218 (2 pins) .
C219 (2 pins) .
C220 {2 pins}
€221 (2 pins)
€233 (1 pin}
C241 11 pin). .
0243 (8 pins)
C244 (2 pins)

Page-Figure
Next to power distribution box, mounted on engine
dash 7000. 0-3
Behind LH side of dash, on body electrical bracket. . 7000- 5-6
Behind LH side of dash, near accessory connector... 7000- 6-2
RH front of engine compartment... «+ + 1. 7000 3:5
Behind LH headlight - 2 7000- 1-5
LH rear comer of engine compartment, on power
distribution box 7000- 0-2
LH rear corner of engine compartment, on power
distribution box 2: 7000 0-2
Behind RH side of dash, above glove box . 7000- 9-2
Behind RH side of dash, above glove box........ 7000- 9-2
RH rear of engine compartmet, under tray ....... 7000- 4-2
Behind LH side of dash, near steering column . . . .. 7000. 6-2
Behind LH side of dash, near accessory connector... 7000- 6-4
Front of LH front whee! well, on bracket 7000. 1-2
LH side of RH front wheel well... 2... + 7000- 3-6
Bolow RH side of rear seat. . . 7000-11-2
Lower LH side of engine. 7000- 0-5
Behind LH side of dash, on steering column 7000. 6-4
Behind LH side of dash, on steering column 7000- 6-4
Behind LH side of dash, on steering column ...... 7000- 6-4
Behind LH side of dash, RH side of steering column. 7000- 7-4
Inside LH kick panel es 7000. 5-3
Behind LH side of dash, on C204 7000- 7-4
Behind LH side of dash, near clutch pedal support. 7000- 6-3
| Behind LH side of dash, near brake pedal support .. 7000- 6-2
Behind LH side of dash, on steering column . . . 7000- 6-4
Behind center af dash, on rear of digital radio 7000- 8-3
Behind center of dash, on rear of digital radio . ..... 7000. 8-2
Behind center of dash, on rear of digital radio... 7000- 8-2
Behind center of dash, behind digital radio 7000- 8-1

Behind center of dash, on rear of digital radio 7000- 8-2
Behind LH side of dash, near accessory connector. . 7000- 6-1
Behind center of dash, on rear of digital radio . 7000- 8-3
LH side of trunk, above LH rear wheel well... .... 7000-11-3

Behind LH side of dash
Behind RH side of dash

Behind center of dash, near digital radio... ....... 7000. 8-1
Behind LH side of dash, above steering column... 7000- 6-5
Behind center of dash, near digital radio... ...... 7000. 8-1
Behind center of dash, on rear of digital radio... 7000- 8-2

9000-4

CONNECTORS
C245 (2 pins)
C260 (2 pins)
C301 (2 pins) -
C302 (25 pins) Accessory
Connector
C303 (3 pins)
C304 (3 pins) .
€308 {1 pin). .
C306 (9 pins)
C352 (2 pins)
C360 (2 pins) .
C401 (7 pins)
(C402 (7 pins).
C403 (4 pins)
C404 (21 pins)
C405 (21 pins}
C406 (1 pin)
C407 (1 pin)
C500 {1 pin)
0503 (3 pins)
CS10 (1 pin).
GROUNDS
G100
G103
G104
6200.
6201. .
6300.
6302.
6800.

COMPONENT LOCATION CHART

Behind center of dash, on rear of digital radio

Behind LH side of dash, near accessory connector.

Below center console, near gear shift lever

Behind LH side of dash, on body electrical bracket
At base of RH "B” pillar .
At base of LH “B" pillar

Behind LH side of dash, near accessory connector. .

Below center console, near gear shift lever
Behind LH side of rear seat. .

Below RH side of rear seat

In LH “Bs” pillar

In RH “8 pillar

Behind LH side of dash, near accessory connector. .

Above RH front door jamb switch
‘Above LH front door jamb switch
Below RH front speaker:

Below LH front speaker

Behind LH side of dash, near steering column
In lower rear of LH front door
Inside LH kick panel, above LH front speaker .

RH rear comer of trunk, behind battery

On RH front shock tower.

On inner fender, behind LH headlight.
Behind LH side of dash, above brake pedal
Upper LH side of steering column

Behind LH side of rear seat.

LH side of trunk, on power antenna bracket -
In windshield header

Page-Figure

7000- 6-1
7000- 8-5

7000- 5-6
7000-10-5
7000-10-4
7000- 6-1
7000- 8-4
7000-10-65
7000-11-2
7000-10-3
7000-103
7000- 6-6
7000- 9-4
7000- 5-
7000- 9.
7000- 5
7000- 6-
7000-10-
7000- 5:

GRHEON

7000-11-5
7000. 4-1
7000- 1-4
7000. 6-5
7000- 7-1
7000-10-8
7000-11-3

BMW E30 Wiring DIagram

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BMW E30 Wiring DIagram

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