Diagnostic Fault Information
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. 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 |
|---|---|---|---|---|
| Relay B+ Circuit | 2 | 2 | - | - |
| Rear Defog Relay Control | B0283 | B0283 | B0283 | - |
| Rear Defogger Control Circuit | 2 | 2 | 1 | - |
| HVAC Class 2 Serial Data | 2 | 2 | 2 | - |
| Rear Window Defogger Grid Ground | - | 2 | 2 | - |
| 1. Rear defogger always ON 2. Rear defogger inoperative |
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