Checking Cables

Check the camshaft reset valve resistance between #1 and #2, resistance should be approximately 3.7 Ω.

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

Check power supply cable #5 and camshaft reset valve #1 for a short-circuit to ground according to Short-circuit to ground, permanent faults .

Remedy as necessary

Other information: 

• To connect the breakout box, see Connecting the breakout box .
• To access and 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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  Refer to Verification