Checking components and wiring

Check that fuse 11D/2 is intact.

Check the cable between relay 2/83 terminal #3 and the trailer connector. Check for an open-circuit. Check for a short-circuit to ground.

Check the cable between the trailer connector and the ground terminal for an open-circuit.

Remedy as necessary.

Other information: 

• For further information about signals and other values, see Signal specification
• To connect the breakout box, see Connecting the breakout box
• To access the integrated relay / fusebox in the cargo compartment, see Integrated relay/fuse box cargo compartment/rear electronic module, replacing
• See Checking wiring and terminals .

Fig 1: Identifying Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Relays And Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.