Checking components and wiring

WARNING: This page is about a different car, the 2004 Volvo S40, 2003 Volvo S40, 2002 Volvo S40, 2001 Volvo S40, and 2000 Volvo S40. However, it is still accessible from the selected car via links, so may be relevant.

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

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

The power supply should be 5 V.

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

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

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 Diagnostic trouble code (DTC) information
To replace the camshaft position (CMP) sensor, see Replacing camshaft position (CMP) sensor .

Fig 1: Identifying EMS2000

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 2: Identifying Ohmmeter

Courtesy of VOLVO CARS OF NORTH AMERICA.

Fig 3: Identifying Camshaft Position (CMP) Sensor Connector Terminals

Courtesy of VOLVO CARS OF NORTH AMERICA.

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