This technical wiring and electrical diagram manual provides comprehensive coverage for FM9, FM12, FH12, FH16, NH12, and FN FH models, primarily for vehicles manufactured until 2005, with specific coverage extending to 1998 and until 2009 for certain variants. Trucks are renowned for their robust engineering and reliability, with the FM and FH series representing significant advancements in heavy-duty truck technology. This manual delves into the intricate electrical systems that power these vehicles, from engine management and powertrain control to lighting, instrumentation, and advanced safety features like ABS and EBS. It is an essential resource for understanding the complex network of wires, components, and circuits that ensure optimal performance and safety.
The purpose of this manual is to serve as an authoritative guide for professional truck mechanics, fleet maintenance departments, and automotive technicians. It offers detailed electrical system coverage, including comprehensive wiring diagrams, component indexes, fuse and relay assignments, and wiring harness illustrations. The manual facilitates efficient troubleshooting, fault isolation, and repair of electrical issues, providing critical factory-level schematics that minimize diagnostic time and ensure accuracy. By detailing component locations, cable color codes, and connector pinouts, this resource empowers users to maintain and repair the electrical systems of these trucks effectively, ensuring their continued operational integrity and safety.
Volvo Truck FM9 FM12 FH12 FH16 NH12 UNTIL 2005
Volvo Truck FN FH 1998
Volvo Truck FH12 FH16 1998
Volvo Truck FM FH UNTIL 2009
Example of wiring diagram ................................................................... 2
Component wiring diagram index ........................................................ 5
Component wiring diagrams ................................................................ 8
Illustrations index ................................................................................ 90
Illustrations ........................................................................................... 91
Fuses ................................................................................................... 171
Relays ................................................................................................. 173
Wiring harness illustration index ..................................................... 175
Earth connections ............................................................................. 178
List of earth connections .................................................................... 180
List of connectors .............................................................................. 181
List of components ............................................................................ 189
Abbreviations ..................................................................................... 195
Cable colour code ..............................................................................
Volvo Truck FM9 FM12 FH12 FH16 NH12 UNTIL 2005
Volvo Truck FN FH 1998
Volvo Truck FH12 FH16 1998
Volvo Truck FM FH UNTIL 2009
Example of wiring diagram ................................................................... 2
Component wiring diagram index ........................................................ 5
Component wiring diagrams ................................................................ 8
Illustrations index ................................................................................ 90
Illustrations ........................................................................................... 91
Fuses ................................................................................................... 171
Relays ................................................................................................. 173
Wiring harness illustration index ..................................................... 175
Earth connections ............................................................................. 178
List of earth connections .................................................................... 180
List of connectors .............................................................................. 181
List of components ............................................................................ 189
Abbreviations ..................................................................................... 195
Cable colour code ..............................................................................
