Checking Components And Wiring

Check the power cable between engine control module (ECM) terminal #B4 (#C4) and the system relay. Check for an open-circuit.

Try a new system relay if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information 

• see CONNECTING THE BREAKOUT BOX
• see SIGNAL SPECIFICATION
• see CHECKING WIRING AND TERMINALS

Fig 1: Identifying Main Relay

Courtesy of VOLVO CARS CORPORATION

• Continue 

  Refer to INFORMATION