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 |
|---|---|---|---|---|
| Radio Controls B+ | U0257, 1, 2, 3 | 2, 4 | - | - |
| Radio Display B+ | U0257, 1, 2, 3 | U0257, 1, 3, 4 | - | - |
| Remote Enable Circuit | U0257, 1, 4 | U0257, 1, 4 | - | - |
| Radio Controls Reset | U0257, 1, 2 | - | - | - |
| Radio Controls Wakeup | - | U0257, 1, 2 | U0257, 1, 2 | - |
| Radio Display Reset | U0257, 1 | - | - | - |
| CGI Serial Data + | U0257, 1, 2 | U0257, 1, 2 | U0257, 1, 2 | - |
| CGI Serial Data - | U0257, 1, 2 | U0257, 1, 2 | U0257, 1, 2 | - |
| Radio Controls ground | - | 2 | - | - |
| Radio Display Ground | - | - | - | - |
| 1. Display Inoperative 2. Controls inoperative 3. Fault affects multiple components, dependant on vehicle equipment additional communication DTCs may be set 4. Fault may affect one or more components, dependant on fault location |
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