Signal Too Low. Permanent Fault

Checking The Signal Cable
- Ignition OFF.
- Disconnect accelerometer.
- Ignition ON.
- Connect a voltmeter between accelerometer connector terminal 3 and ground.
- The voltmeter should read approx. 5 Volts.

If reading is OK:
^ Try a new accelerometer.
^ Proceed to: Verification section below.

If reading is incorrect:
^ Check cable between accelerometer terminal 3 and engine control module (ECM) # B32 for a short-circuit to ground.
^ Proceed to: Verification section below.





Verification
After carrying out the repair, check that the fault has been remedied as follows:

- Ignition OFF.
- Accelerometer and, if necessary, air conditioning (A/C) pressure sensor and fuel tank pressure sensor connected.
- Start the engine and idle it.
- Go into scrolling values.
- Read off accelerometer signal.
- The value should be approx. 2.5 Volts.

If reading is OK:
^ Fault corrected.

If reading is incorrect:
^ Proceed to: Fault-tracing Information section below.

Fault-tracing Information
The verification result shows that the fault persists.

- Do you want to exit fault-tracing?

Yes:
^ Fault not corrected.

No:
^ Proceed to: Checking The Signal Cable section above.