Diagnostic Fault Information
WARNING: This page is about a different car, the 2008 Cadillac CTS. 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 |
| B+ Circuit |
1 |
1 |
- |
- |
| A/C Relay Coil Side Supply Voltage |
1 |
1 |
- |
- |
| Ignition 1 |
1 |
1 |
- |
- |
| A/C Compressor Clutch Relay Control |
P0645 |
P0645 |
P0645 |
- |
| A/C Relay Coil Side Ground |
- |
1 |
- |
- |
| 1. A/C Compressor Inoperative |