Checking The Connectors And Components

Check the battery voltage.

Check the charging function of the generator (GEN).

Check the fuse before the circuit. If the fuse is blown, check the circuit. Check for a short-circuit to ground.

Check the cable between system relay terminal #5 and control module terminal #A17 (#A17). Check for an open-circuit.

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

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).

Other information

To fault-trace the charging system, see FAULT-TRACING AND TESTING THE VOLTAGE SUPPLY SYSTEM
To connect the breakout box and access the control module, see CONNECTING THE BREAKOUT BOX
For 5 cylinder turbocharged engines -2004, see SIGNAL DESCRIPTION
For 5 cylinder turbocharged engines 2005-, see SIGNAL SPECIFICATION .
For 6 cylinder engines -2004, see SIGNAL SPECIFICATION
For 6 cylinder engines 2005-, 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