Checking The Component And Wiring

Check the battery voltage and condition.

Check the charging function of the generator (GEN).

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

Check the signal cable between engine control module (ECM) terminal #B16 (#C16) and the system relay. Check for an open-circuit.

Check the engine control module (ECM) and the system relay connector. Check for contact resistance. Check for oxidation.

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 VCT2000 Diagnostic Tool Symbol In VIDA

Courtesy of VOLVO CARS CORPORATION

Fig 2: Identifying Battery

Courtesy of VOLVO CARS CORPORATION

• Continue 

  Refer to VERIFICATION