Checking Connectors And Components

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

Check the cable between system relay terminal #5 and the engine control module (ECM). Check for an open-circuit.

Remedy as necessary.

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

HINT: Read off the voltage from the system relay to the engine control module (ECM) using the VCT2000 (or appropriate scan tool). 

Other information 

• For information about signals for 5 cylinder engines: SIGNAL SPECIFICATION
• For information about signals for 6 cylinder engines: 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