Diagnostic Fault Information
WARNING: This page is about a different car, the 2018 Buick Regal TourX and 2018 Buick Regal. 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 |
|---|---|---|---|---|
| B+ (armrest compartment USB/SD card reader) | B124B, 1, 6 | B124B, 1, 5 | - | - |
| B+ (front console USB ports - RPO DO7 only) | B124C, 1, 6 | B124C, 1, 5 | - | - |
| Auxiliary Audio Common Signal | - | 8 | - | - |
| Auxiliary Detection Signal | 7 | 8 | - | - |
| Left Auxiliary Audio Signal | 2 | 2 | 2, 4 | - |
| Right Auxiliary Audio Signal | 3 | 3 | 3, 4 | - |
| USB Cable (armrest compartment USB/SD card reader) | B124B | B124B | B124B | - |
| USB Cable (front console USB ports - RPO DO7 only) | B124C, 9 | B124C, 9 | B124C, 9 | - |
| Ground | - | 1 | - | - |
| 1. SD Card reader and/or USB port (s) Inoperative 2. No left side audio from device connected to AUX jack 3. No right side audio from device connected to AUX jack 4. Noticeable distortion may be present in affected audio channel 5. Fault may affect one or more components, dependent on fault location 6. Fault affects multiple components, dependent on vehicle equipment 7. Radio does not detect auxiliary device connection, AUX not available as input selection 8. AUX always available as an input selection, with or without auxiliary device connected 9. Console USB ports inoperative |
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