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 |
|---|---|---|---|---|
| Windshield Wiper Motor Module B+ | 1 | 1 | - | - |
| Rain/Ambient Light Sensor Module B+ | U151A | U151A | - | - |
| Windshield Wiper Motor Relay Coil Supply Voltage | - | - | - | - |
| Windshield Wiper Motor Serial Data | U151A | U151A | U151A | - |
| Windshield Wiper/Washer Switch Signal Terminal 3 | 3 | 3 | 3 | - |
| Windshield Wiper/Washer Switch Signal Terminal 1 | 4 | 2 | - | - |
| Windshield Wiper/Washer Switch Low Reference | - | 1 | - | - |
| Rain/Ambient Light Sensor Module Ground | - | U151A | - | - |
| Windshield Wiper Motor Module Ground | - | 1, 2, 3 | - | - |
| 1. Windshield Wipers Inoperative 2. Windshield Wipers High Speed Inoperative 3. Windshield Wipers Intermittent or Low Speed Inoperative 4. Windshield Wipers Always ON |
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