Checking The Wiring

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

Check the resistance of the camshaft reset valve between terminals #1 and #2.

The resistance must be approximately 3.7 Ω.

Check the signal cable between engine control module (ECM) terminal #A21 (#A21) and camshaft reset valve terminal #2. Check for an open-circuit. Check for a short-circuit to ground.

Check the power supply cable between system relay terminal #5 and camshaft reset valve terminal #1. Check for an open-circuit.

HINT: With the ignition on and the reset valve and camshaft connector disconnected, the voltage at connector terminal #1 must be approximately U _bat. 

Remedy as necessary.

Other information: 

• To connect the breakout box, see Connecting the breakout box
• To replace the camshaft reset valve, see Variable Valve Timing Solenoid, Replacing 
• See Contents .

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