Signal Too Low. Permanent Fault

Checking 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.
^ Then 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.
^ Then proceed to Verification section below.





Verification
- After carrying out the repair, check that the fault has been remedied as follows.
- Ignition off.
- Accelerometer and any A/C pressure sensor and tank pressure sensor connected.
- Start the engine and idle it.
- Go into scrolling values list.
- Read off accelerometer voltage signal.
- The reading should be about 2.5 Volts.

If reading is OK:
^ Fault corrected

If reading is incorrect:
^ Proceed to test step below.

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

- Do you want to exit fault-tracing?

Yes:
^ Fault not corrected

No:
^ Return to Checking Signal Cable section above.