Diagnostic Fault Information
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis 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 |
|---|---|---|---|
| IAH Temperature Signal | - | P154D | P154D |
| IAH Command 2 | P154B | P154B | P154B |
| IAH Voltage Signal | P154B | P154B | P154B |
| IAH Command 1 | P154B | P154B | P0640 |
| IAH Current Signal | P154C | P154C | P154C |
| IAH Feedback Signal | P154A | P154A | P154A |
| IAH Battery Positive Voltage | - | P154B | - |