DH10 - Attempt to Generate DTC 123 or 121

Diagnostic Trouble Code (DTC) 122 indicates the Throttle Position (TP) sensor signal is less than the Self-Test minimum value.

Possible causes:

- TP sensor may not be seated properly (tightened down).

- Damaged TP sensor.

- Open harness.

- Grounded harness.

- Damaged Powertrain Control Module (PCM).

- Key "OFF".

- Disconnect TP sensor. Inspect for damaged or pushed out pins, corrosion, loose wires, etc. Service as necessary.

- Jumper VREF circuit to TP circuit at TP sensor vehicle harness connector.

- Run Key On Engine Off Self-Test. Quick Test Appendix (Detailed Testing Instructions)

NOTE: If no DTCs are generated, immediately remove jumper and go directly to DH13. DH13 - Check TP Circuit For Shorts to Ground

- Is DTC 123 or 121 present (ignore all other DTCs)?

Yes -- Replace TP sensor. Remove jumper. Rerun quick test. Quick Test Appendix (Detailed Testing Instructions)

No -- Remove jumper.Go to DH11. DH11 - Check VREF Circuit Voltage