Diagnostic Fault Information
WARNING: This page is about a different car, the 2007 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Interior Backlighting Malfunction
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Low Beam Headlamp Supply Voltage | 1 | 1 | 3 | - |
| High Beam Headlamp Supply Voltage | 2 | 2 | 4 | - |
| Headlamp Low Beam Relay Control | 1 | 1 | B2575 00 | - |
| Headlamp High Beam Relay Control | 2 | 2 | B2580 00 | - |
| Headlamp Switch Headlamps Off Signal | B257A 00 | 6 | 6* | - |
| Headlamp Switch Headlamps On Signal | B257A 00 | 1 | 1* | - |
| Flash to Pass Switch Signal | 4 | 5 | 5* | - |
| Headlamp Dimmer Switch High Beam Signal | 4 | 2 | 2* | - |
| Low Beam Headlamp Ground | - | 1 | 1 | - |
| High Beam Headlamp Ground | - | 2 | 2 | - |
| Headlamp Switch Ground | - | 1, 2 | 1, 2 | - |
| Turn Signal/Multifunction Switch Ground | - | 2, 5 | 2, 5 | - |
| * Internal damage to the switch may occur if shorted to B+ 1. Low Beam Headlamp(s) Inoperative 2. High Beam Headlamp(s) Inoperative 3. Low Beam Headlamp(s) Always On 4. High Beam Headlamp(s) Always On 5. Flash to Pass Inoperative 6. Headlamp Defeat Inoperative |
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