Checking connectors and wiring
- Ignition off.
Check the engine speed (RPM) sensor connector. Check for contact resistance and oxidation.
Check the signal cable between:
- The engine speed (RPM) sensor terminal #1 and Engine control module (ECM) terminal #A48 (#A48).
- The engine speed (RPM) sensor terminal #2 and Engine control module (ECM) terminal #A66 (#B6).
Check the signal line for open circuit, short-circuit to ground and short-circuit to voltage.
Check the carrier plate.
Remedy as necessary.
Other information
- See Connecting the breakout box
- For 5 cylinder engines, see Signal specification
- 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 .
- 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 .
- See Checking wiring and terminals
- Continue
Refer to Verification