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 |
|---|---|---|---|---|
| Seat Lumbar Support Switch B+ | 1 | 1 | - | - |
| Seat Horizontal Lumbar Deflate Signal | 1 | 2, 3 | 5 | - |
| Seat Horizontal Lumbar Inflate Signal | 1 | 3 | 4 | - |
| Seat Vertical Lumbar Deflate Signal | 1 | 2, 3 | 5 | - |
| Seat Vertical Lumbar Inflate Signal | 1 | 2 | 4 | - |
| Seat Lumbar Support Pump Control | 1 | 1 | 4 | - |
| Seat Lumbar Support Pump Ground | - | 1 | - | - |
| Seat Lumbar Adjuster Valve Assembly Ground | - | 1 | - | - |
| 1. The seat lumbar support is inoperative 2. The upper lumbar support is inoperative 3. The lower lumbar support is inoperative 4. The lumbar adjuster pump is always ON 5. The lumbar support will not inflate |
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