This manual covers Volvo Trucks models FM9, FM12, FH12, FH16, and NH12 (VERSION2), identified by CHID codes A610059 and B411901. These heavy-duty commercial vehicles are renowned for their engineering quality and reliability, forming the backbone of many transport operations. The FM and FH series have evolved significantly, reflecting Volvo's commitment to safety, efficiency, and driver comfort. This documentation is specifically designed to provide in-depth electrical system information for these robust trucks, which are built for demanding applications and are a testament to Volvo's long heritage in truck manufacturing.
The purpose of this service repair manual is to provide comprehensive coverage of the electrical systems for the specified Volvo Trucks models. It focuses primarily on wiring diagrams, electrical systems, fuses, relays, earth connections, connectors, and components, offering over 200 pages of detailed information. This manual is an essential resource for professional mechanics and technicians, enabling them to perform accurate diagnosis, troubleshooting, and repair of complex electrical issues. It details wiring for powertrain, chassis, body, comfort, and safety systems, including advanced driver-assistance systems, ensuring the continued optimal performance and reliability of your Volvo truck.
Service Manual VOLVO Trucks
Group 37
Release 01
Wiring diagram
FM9, FM12, FH12, FH16, NH12 VERSION2
FM, FH CHID A610059
FM, FH CHID B411901
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 .............................................................................. 197
Service Manual VOLVO Trucks
Group 37
Release 01
Wiring diagram
FM9, FM12, FH12, FH16, NH12 VERSION2
FM, FH CHID A610059
FM, FH CHID B411901
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 .............................................................................. 197
