Checking Wiring And Connectors

Check the signal cable between engine control module (ECM) #A13 and camshaft reset valve #2 for an intermittent short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults .

Other information 

• To connect the breakout box, see Connecting the breakout box .
• To accessand replace the camshaft reset valve, see Variable Valve Timing Solenoid, Replacing .
• With the ignition on and the camshaft reset valve connector disconnected the voltage on connector #1 should be approximately Ubatt and at connector #2 it should be a pulse modulated signal with a peak voltage of approximately Ubatt and with a frequency of approximately 250 Hz.

Fig 1: Identifying Camshaft Reset Valve Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohm Meter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Camshaft Reset Valve (Continuous Variable Valve Timing (CVVT))

Courtesy of VOLVO CARS OF NORTH AMERICA.

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