Checking the wiring and components

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 resistance of the engine speed (RPM) sensor. The resistance must be between 250-350 Ω at 25 °C.

Remove the engine speed (RPM) sensor. Check that there is no dirt on the engine speed (RPM) sensor or flywheel. Check that there is no damage on the flywheel which could affect the signal.

Try a new engine speed (RPM) sensor if no fault is found during the above fault-tracing.

Remedy as necessary.

Other information

To connect the breakout box, see Connecting the breakout box. EMS 2000
To remove or replace the engine speed (RPM) sensor, see Replacing engine speed (RPM) sensor .

Fig 1: Identifying Engine Speed (RPM) 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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Refer to Verification