Checking The Wiring

Check the resistance between connector terminal #1 and terminal #2 on the camshaft reset valve. The resistance must be approximately 3.7 Ω.

Check the signal cable between engine control module (ECM) terminal #A12 and connector terminal #2 (on the camshaft reset valve). Check for a short-circuit to supply voltage according to Short-circuit to supply voltage. 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 reset valve connector disconnected, the voltage at connector #1 must be approximately Ubat and at connector terminal #2 it must be a pulse modulated signal with a peak voltage of approximately Ubat and with a frequency of approximately 250 Hz
• For information about signals, see Signal specification .

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