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.
Park, License, and/or Tail Lamps Malfunction
| Circuit | Short to Ground | Open/High Resistance | Short to Voltage | Signal Performance |
|---|---|---|---|---|
| Left Park Lamp Supply Voltage | 3 | 3 | 3 | - |
| Right Park Lamp Supply Voltage | 4 | 4 | 4 | - |
| Park Lamp Switch On Signal | B257A 00 | B257A 00, 1 | B257A 00, 1* | - |
| Park Lamp Relay Control | 2 | 1 | B2585 00 | - |
| Left Park Lamp Ground | - | 3 | 3 | - |
| Right Park Lamp Ground | - | 4 | 4 | - |
| Headlamp Switch Ground | - | 5 | - | - |
| * Internal damage to the switch may occur if shorted to B+ 1. All Park Lamps Inoperative 2. All Park Lamps Always On 3. Left Park Lamps Malfunction 4. Right Park Lamps Malfunction 5. Headlamps and Park Lamps Inoperative |
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