Checking components and wiring

Check the engine control module (ECM) and camshaft position (CMP) sensor connectors. Check for contact resistance and oxidation according to Contact resistance and oxidation .

Check power supply cable between engine control module (ECM) connector terminal #83 and camshaft position (CMP) sensor terminal 3. Check for an intermittent open-circuit according to Open-circuit, intermittent faults . Remedy if necessary.

The power supply must be 5 V.

Check remedy the signal cable between engine control module (ECM) terminal #58 and the camshaft position (CMP) sensor terminal 2. Check for an intermittent open-circuit according to Open-circuit, intermittent faults . Check for an intermittent short-circuit to ground according to Short-circuit to ground, intermittent faults . Check for a short-circuit to supply voltage according to Short-circuit to supply voltage, intermittent faults . Remedy if necessary.

Check the ground lead between engine control module (ECM) terminal #79 and camshaft position (CMP) sensor terminal 1. Check for an intermittent open-circuit according to Open-circuit, intermittent faults . Remedy if necessary.

Try a new camshaft position (CMP) sensor if no faults are found in the above fault-tracing.

Other information 

• To connect the breakout box, see Connecting the breakout box. EMS 2000
• To replace the camshaft position (CMP) sensor, see Replacing camshaft position (CMP) sensor .

Fig 1: Identifying Camshaft Position (CMP) Sensor Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

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