Diagnostic Fault Information
WARNING: This page is about a different car, the 2019 Buick Cascada, 2018 Buick Cascada, and 2017 Buick Cascada. 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 |
|---|---|---|---|---|
| Headlamp Relay Control | 1, 2 | U1511 00, U1521 00 | 1, 2 | - |
| Low Beam Headlamp Control - Left | U1511 00 | U1511 00 | 1 | - |
| Low Beam Headlamp Control - Right | U1521 00 | U1521 00 | 1 | - |
| High Beam Headlamp Control - Left | U1511 00 | U1511 00 | 2 | - |
| High Beam Headlamp Control - Right | U1521 00 | U1521 00 | 2 | - |
| Headlamp Switch Headlamps OFF Signal | B257A 00 | 3 | 3 | - |
| Headlamp Switch Headlamps ON Signal | B257A 00 | 3 | 3 | - |
| Turn Signal/Multifunction Switch Flash To Pass Signal | B3806 00 | 4 | 4 | - |
| Turn Signal/Multifunction Switch High Beam Signal | B3650 08 | 4 | 4 | - |
| Headlamp Ground - Left | - | 1 | - | - |
| Headlamp Ground - Right | - | 1 | - | - |
| Headlamp Switch Ground | - | 3 | - | - |
| Turn Signal/Multifunction Switch Ground | - | 4 | - | - |
| 1. Headlamps Malfunction - Low Beam 2. Headlamps Malfunction - High Beam 3. Headlamp Switch Malfunction 4. Turn Signal/Multifunction Switch Malfunction |
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