Difference between revisions of "18039/P1631"
From Ross-Tech Wiki
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* Check Voltage Signals from ECM to Throttle Pedal (see factory repair manual) | * Check Voltage Signals from ECM to Throttle Pedal (see factory repair manual) | ||
* Check Wiring and Connectors from Accelerator Pedal to ECM | * Check Wiring and Connectors from Accelerator Pedal to ECM | ||
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==== Special Notes ==== | ==== Special Notes ==== | ||
Revision as of 18:05, 24 February 2011
18039/P1631 - Accelerator Position Sensor (G79): Signal too High
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
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.