Diagnostic Fault Information
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| 5-Volt Reference Circuit (ECM) | ECM P0641, P0651 / HPCM P1AC6 | ECM P0335 / HPCM P1AC6 | ECM P0651, P2135 / HPCM P1AC6 | - |
| CKP Sensor Signal Circuit1 | ECM P0335 / HPCM P1AC6 | ECM P0335 / HPCM P1AC7 | ECM P0335 / HPCM P1AC6 | ECM P0336 / HPCM P1AC7 |
| Low Reference Circuit1 | - | ECM P0335 / HPCM P1AC7 | ECM P0335 / HPCM P1AC6 | - |
| 1 ECM DTCs will not set with an open circuit condition between the circuit splice and the HPCM. | ||||