Difference between revisions of "18047/P1639/005689"
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(Created page with '== 18047/P1639 - Accelerator Position Sensor 1/2 (G79/G185): Implausible Signal == ==== Possible Symptoms ==== * Malfunction Indicator Light (MIL) ON * Reduced Engine Output …') |
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Revision as of 16:05, 25 February 2011
18047/P1639 - Accelerator Position Sensor 1/2 (G79/G185): Implausible Signal
Possible Symptoms
- Malfunction Indicator Light (MIL) ON
- Reduced Engine Output
Possible Causes
- Wiring Harness from Accelerator Pedal to ECM
- Faulty ECM
- Faulty Accelerator Pedal
Possible Solutions
- Check Measuring Block Readings for Accelerator Pedal
- Check Voltage Signals from ECM to Throttle Pedal (see factory repair manual)
- Check Wiring and Connectors from Accelerator Pedal to ECM
- Replace Faulty ECM
- Replace Faulty Accelerator Pedal, see Special Notes first
Special Notes
- Accelerator Position Sensor faults can be caused by issues with the Oxygen Sensor(s) and it's
wiring. Please verify this BEFORE replacing the ECM or Accelerator Pedal. Accelerator Pedal
failure is very rare.