Volvo 850 (1996) Wiring Diagrams

Contents
How to use the diagrams ................................................................ 2
Central electrical unit:
Fuses ............................................................................................... 4
Relays .............................................................................................. 6
Connection on rails .......................................................................... 6
Location of relays outside the central electrical unit ....................... 7
Ignition switch .................................................................................. 7
Cable harnesses and connectors
Left-hand drive cards - Overview .................................................... 8
Cable harnesses and connectors
Right-hand drive cars - Overview .................................................... 9
Connectors ...................................................................................... 10
Routing of cable harnesses in the car ............................................. 25
Branching points .............................................................................. 32
Electrical distribution unit ................................................................. 48
Ground points .................................................................................. 50
Group 23/28
Multiport fuel injection (MFI) system, LH-jetronic 3.2
& EZ 129 K ...................................................................................... 54
Multiport fuel injection (MFI) system, Fenix 5.2 .............................. 56
Sequential fuel injection (SFI) system, Motronic 4.3
(B 5204 T, B 5234 T/T5) .................................................................. 60
Sequential fuel injection (SFI) system, Motronic 4.3
(B 5254 S) ....................................................................................... 64
Sequential fuel injection (SFI) system, Motronic 4.4
(B 5254 S) ....................................................................................... 68
Group 26
Engine cooling fan (EZ 129 K) ........................................................ 72
Engine cooling fan (Fenix 5.2, Motronic 4.3/4.4) ............................. 74
Group 27
Cruise control .................................................................................. 76
Group 32/33
Charging circuit and starting system ............................................... 78
Group 35
High and low beams ........................................................................ 80
High and low beams, DIM-DIP (GB) ............................................... 82
Beam length control ........................................................................ 84
Fog lights ......................................................................................... 86
Parking lights, tail lights and license plate lights,
4-door .............................................................................................. 88
Parking lights, tail lights and license plate lights,
5-door .............................................................................................. 90
Stop (brake) lights, 4-door ............................................................... 92
Stop (brake) lights, 5-door ............................................................... 94
Back-up (reversing) lights ................................................................ 96
Interior light, 4-door ......................................................................... 98
Interior light, 5-door .........................................................................100
Instrumentation and control lighting ................................................102
Group 36
Turn signal / hazard lights, 4-door ...................................................104
Turn signal / hazard lights, 5-door ...................................................106
Horn .................................................................................................108
Windshield and headlight wash/wipe ..............................................110
Tailgate wash/wipe ..........................................................................112
Cigar lighter .....................................................................................114
Basic alarm ......................................................................................116
Guard Alarm II, early type ..............................................................118
Guard Alarm II, late type .................................................................120
Electronic start inhibitor (Immobilizer) .............................................122
Group 37
On-board diagnostic system (OBD system) ....................................124
Wiring for accessories .....................................................................126
Group 38
Bulb failure warning sensor .............................................................128
Seat belt reminder ...........................................................................130
Seat belt and key reminder, USA, Canada, Korea ..........................132
Seat belt and key reminder, Australia ..............................................134
Combined instrument panel, VDO ...................................................136
Combined instrument panel, Yasaki ................................................140
Clock module/outside temp. and clock module/trip computer
(Combined instrument panel, VDO) ................................................144
Clock module/outside temp. and clock module
(Combined instrument panel, Yasaki) ..............................................146
Group 39
Radio, 4-door ...................................................................................148
Radio, 5-door ...................................................................................150
Radio with extra amplifier, 4-door ....................................................152
Radio with extra amplifier, 5-door ....................................................154
Group 43
AW 50-42 electronically controlled automatic transmission
(LH 3.2 & EZ 129 K) ........................................................................156
AW 50-42 electronically controlled automatic transmission
(Fenix 5.2, Motronic 4.3/4.4) ...........................................................158
P-shift lock, automatic transmission ................................................160
Group 59
ABS Brake system and TRACS ......................................................162
Group 83
Power windows, Left-hand drive cars ..............................................164
Power windows, Right-hand drive cars ...........................................166
Central locking, 4-door ....................................................................168
Central locking, 5-door ....................................................................170
2-stage central locking, 4-door ........................................................172
2-stage central locking, 5-door ........................................................174
Central locking with deadlock, 4-door .............................................176
Central locking with deadlock, 5-door .............................................178
Power sunroof ..................................................................................180
Group 84
Heated rear window and door mirrors .............................................182
Power door mirrors ..........................................................................184
Group 85
Electrically heated seats ..................................................................186
Heated rear seat ..............................................................................188
Power seat with memory .................................................................190
Group 87
Blower fan ........................................................................................192
Manual climate unit MCC (LH 3.2 & EZ 129 K) ..............................194
Manual climate unit MCC (Fenix 5.2, Motronic 4.3/4.4) ..................196
Electronic climate unit ECC (LH 3.2 & EZ 129 K) ...........................198
Electronic climate unit ECC (Fenix 5.2, Motronic 4.3/4.4) ..............200
Exhaust temperature sensor (Japan) ..............................................202
Group 88
SRS Supplemental Restraint System (SRS) ...................................204
Function diagrams ...........................................................................206
Comments .......................................................................................227
Component list (fold-out) ............................................... at end of book
Alphabetical index ......................................................... at end of book
Order no. TP 3911032 (UK) Order no. TP 3911202 (USA/CDN)
Supersedes TP 3911031 Supersedes TP 3911201
We reserve the right to make alterations without prior notification.
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