Checking connectors and wiring
- Ignition off.
Check the engine speed (RPM) sensor connector. Check for contact resistance and oxidation.
Check the signal cable between:
- engine speed (RPM) sensor terminal #1 and engine control module (ECM) terminal #A48 (#A48)
- engine speed (RPM) sensor terminal #2 and engine control module (ECM) terminal #A66 (#B6).
Check for an open-circuit. Check for a short-circuit to ground. Check for a short-circuit to supply voltage.
Check the carrier plate, search for damage and other defects.
Remedy as necessary.
Other information:
- To connect the breakout box / access the control module, see Connecting the breakout box
- To access or replace the engine speed (RPM) sensor:
- For B5xx4T -2001, see Replacing the engine speed (RPM) sensor
- For B5xx4T 2002-, see Replacing the engine speed (RPM) sensor
- For B6xx4x -2001, see Replacing the engine speed (RPM) sensor
- For B6xx4x 2002-, see Replacing the engine speed (RPM) sensor .
- For information about signals on 5 cylinder engines, see Signal specification
- For information about signals on 6 cylinder engines:
- For 6 cylinder engines -2001, see Signal specification
- For 6 cylinder engines 2002-, see Signal specification
- For 6 cylinder engines -2004, see Signal specification
- For 6 cylinder engines 2005-, see Signal specification .
- See Contents .
- Continue
Refer to Verification