December 1998 Volvo FM7 FM10 FM12 LHD Truck Wiring Diagram Service & Repair Manual

Service Manual Trucks Group 37 Version 02 Wiring diagram FM7, FM10, FM12 LHD To be inserted into the binders for FM, FH. TSP127085

Foreword The descriptions and service procedures contained in this manual are based on de- signs and methods studies carried out up to December 1998. The products are under continuous development. Vehicles and components produced after the above date may therefore have different specifications and repair methods. When this is judged to have a significant bearing on this manual, supplementary service bulletins will be issued to cover the changes. The new edition of this manual will update the changes. In service procedures where the title incorporates an operation number, this is a reference to V.S.T. (Volvo Standard Times). Service procedures which do not include an operation number in the title are for gen- eral information and no referenceis made to V.S.T. The following levels of observations, cautions and warnings are used in this Service Documentation: Note: Indicates a situation, handling or circumstance which should be observed. Important: Indicates a situation, handling or circumstance which should be empha- sized so as not to lead to personal injury or damage to property. Caution: Indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injury or damage to property. Warning: Indicates a potentially hazardous situation which, if not avoided, could result in death, serious injury or major damage to property. Danger: Indicates an imminently hazardous situation which, if not avoided, will result in death or serious injury. Volvo Truck Corporation Göteborg, Sweden The following information will be superseded by this manual: SM Group 37 TSP 21847 Order number: TSP127085 © 1998 Volvo Truck Corporation, Göteborg, Sweden All rights reserved. No part of this publication may be reproduced, stored in retrieval system, or transmitted in any forms by any means, electronic, me- chanical, photocopying, recording or otherwise, without the prior written permission of Volvo Truck Corporation.

Contents Example of wiring diagram ................................................................... 2 Examples of symbols on wiring diagram ........................................... 3 Component wiring diagram index ....................................................... 5 Component wiring diagrams ................................................................ 7 Illustrations index ................................................................................ 56 Illustrations ........................................................................................... 58 Circuit card electrical centre ............................................................ 125 Fuses on circuit card electrical centre ........................................... 126 Relays on circuit card electrical centre .......................................... 127 Cable harness illustration index ...................................................... 128 List of connectors ............................................................................. 132 List of components ........................................................................... 140 Abbreviations ..................................................................................... 146 Cable colour code ............................................................................. 147 Feedback 1

Group 37 Wiring diagram FM7, FM10, FM12 LHD Example of wiring diagram Example of wiring diagram T3009608 Refer to the list of contents for the designation of the circuit diagram. If the circuit diagram designation is boxed in with broken lines this means that the circuit diagram is not standard on all market or vehicle models. Seek column. 30 Voltage battery, kl.30. 15 Voltage with starting key in drive position, kl.15. 61 Voltage when alternator charges, kl.61. Reference arrow (for circuit diagram EA, seek column 13). Switch, comp. no. (104). Single lines, cables. Relay, comp. no. (303). Cable area and colour (0.75 mm 2 blue). Connector (CLA terminal 4). Bulb, comp. no. (403) A broken line box round the component number shows that the component is not standard on all markets or vehicle models. If the line is broken this means the cable is not standard on all markets or vehicle model. Earth connection point no: 2. and earth terminal no: 4. (see diagram Earth Connections). Joint sleeve. 2

Group 37 Wiring diagram FM7, FM10, FM12 LHD Examples of symbols on wiring diagram Examples of symbols on wiring diagram T3009609 Battery Connector Junktion Fuse Joint sleeve Cable Twisted cables Conductor on circuit card Earth connection and cable Switch Switch, starting switch Closing contakt Closing contakt, pressure-regulated Break contakt, temperature-regulated Closing contakt, time-regulated Slip contakt, horn Relay Relay with internal circuit diagram 3

Group 37 Wiring diagram FM7, FM10, FM12 LHD Examples of symbols on wiring diagram T3009610 Bulb Bulb, full beams and dipped beams Bulb, tail light Alternator Starter motor Washer motor Windscreen wiper motor Solenoid valve with diode Pressure sensor Temperature sensor Level sensor Starting heater Cigarette lighter Horn Rheostat Buzzer Loudspeaker 4

Group 37 Wiring diagram FM7, FM10, FM12 LHD Component wiring diagram index Component wiring diagram index AA Power supply, starting system, immobiliser .................................................................... page 7 AC Vehicle ECU .................................................................................................................... page 8 BJ Engine ECU, fuel injection system, preheating, FM7 ..................................................... page 9 BL Engine ECU, fuel injection system, preheating, FM12 ................................................... page 10 BM Engine ECU, fuel injection system, preheating, FM10 ................................................... page 11 CE Head light, parking light, marker light, DRL ................................................................... page 12 CG Fog light, rear fog light .................................................................................................... page 13 CH Spot light (STD) DRIVL2 ................................................................................................. page 14 CI Spot light (EU) DRIVL2EC .............................................................................................. page 14 CK Brake light ........................................................................................................................ page 15 CL Trailer controlled exhaust brake ...................................................................................... page 15 CN Direction indicator, hazard warning light ......................................................................... page 16 EA Reversing light, reversing warning alarm ........................................................................ page 16 ED Loading light, fifth wheel light .......................................................................................... page 17 EJ Roof sign light, L1H1/L2H1 ............................................................................................. page 17 EK Roof sign light, L2H2 ....................................................................................................... page 17 ER Interior light, L1H1/ L2H1, alarm clock/timer .................................................................. page 18 ES Interior light, L2H2, alarm clock/timer ............................................................................. page 19 EV Cigarette lighter ............................................................................................................... page 20 EX 12 V power supply ........................................................................................................... page 20 FA Horn ................................................................................................................................. page 20 GA Wiper, washer .................................................................................................................. page 21 HA Climate unit ..................................................................................................................... page 22 HB Cab heater, EBERSPÄCHER D1LCC, PH-CAB ............................................................. page 23 HC Cab and engine heater, WEBASTO THERMO 90, PH-ENGCA .................................... page 24 HD Short stop cabheater ..................................................................................................... page 24 HE Electrically heated and adjusted seat ............................................................................. page 25 HG Electrically heated mirrors ............................................................................................... page 25 HH Electrically operated mirrors ............................................................................................ page 26 HK Air dryer ........................................................................................................................... page 26 HM Fuel filter heater .............................................................................................................. page 26 HP Electrically cab tilt .......................................................................................................... page 27 JA Radio ............................................................................................................................... page 27 KA Electrically operated window winders ............................................................................. page 28 5

Group 37 Wiring diagram FM7, FM10, FM12 LHD Component wiring diagram index KE SRS, air-bag .................................................................................................................... page 28 KH Central door lock ............................................................................................................. page 29 LD Power take-off .................................................................................................................. page 29 LE Double power take-off ..................................................................................................... page 30 LG Differential lock ................................................................................................................ page 30 LJ Bogie lift, tag axle lock, RADT-LA ................................................................................... page 31 LL Tag axle lock, RADT-A6S ................................................................................................ page 31 LO Geartronic, automatic gearshift ....................................................................................... page 32 LP Powertronic ...................................................................................................................... page 33 LS GLU, gear selector, Geartronic ....................................................................................... page 34 MA Bogie lift hydraulic, RADT-AR ......................................................................................... page 35 MD Bogie lift hydraulic, with axle load limiter, RADT-AR ...................................................... page 36 ME Air suspension, 6x2/6x4/8x2/8x4, SUSPL-EC ................................................................ page 37 MF Air suspension, 4x2, SUSPL-EC ..................................................................................... page 38 MG Rear air suspension, 4x2, TRACTOR, SUSPL-EC ......................................................... page 39 NA Instrument LHS module .................................................................................................. page 40 NB Instrument central module with tachograph .................................................................... page 41 NC Instrument RHS module .................................................................................................. page 42 NX Dynafleet ......................................................................................................................... page 43 NZ Instrument central module without tachograph ............................................................... page 44 OA Basic ABS, D-version ...................................................................................................... page 45 OB ABS/ASR, D-version ........................................................................................................ page 46 OG Retarder, manual gearshift .............................................................................................. page 47 PA Headlight level control ..................................................................................................... page 48 PD Dual speed limiter ........................................................................................................... page 48 TA Refrigerator ...................................................................................................................... page 49 TB Central lubrication system ............................................................................................... page 49 XA Extra fuses, key switch relay ........................................................................................... page 50 ZA Earth connections ........................................................................................................... page 51 ZB Earth connections ........................................................................................................... page 52 ZD ADR battery main switch, current limiter ....................................................................... page 53 ZE Air heater EBERSPÄCHER D1LCC, TRS ...................................................................... page 54 ZG Water heater, WEBASTO THERMO 90, TRS ................................................................. page 55 6

Group 37 Wiring diagram FM7, FM10, FM12 LHD Component wiring diagrams Component wiring diagrams T3011387 7

Group 37 Wiring diagram FM7, FM10, FM12 LHD Component wiring diagrams T3011388 8

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December 1998 Volvo FM7 FM10 FM12 LHD Truck Wiring Diagram Service & Repair Manual

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