Checking components and wiring

Check the signal cable between engine control module (ECM) terminal #10 and system relay (2/14) base terminal #2 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Remedy if necessary.

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

Fig 1: Identifying System Relay Control Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Voltage Display

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Fig 3: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

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