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 |
|---|---|---|---|---|
| Relay Switch B+ | 1 | 1 | - | - |
| Relay Coil Ignition | P0481 or P0691 | P0480 or P0481 | - | - |
| Cooling Fan Low Speed Relay Control | P0480 or P0691 | P0480 | P0480 or P0692 | - |
| Cooling Fan Medium Speed Relay Control | P0481 or P0693 | P0481 or 1 | P0481 or P0694 | - |
| Cooling Fan High Speed Relay Control | P0481 or P0693 | P0481 or 1 | P0481 or P0694 | - |
| Cooling Fan Relay Switch Output | 1 | 1 | 2 | - |
| Cooling Fan Ground | - | 1 | - | - |
| 1. Cooling fan speed inoperative without a DTC. 2. Cooling fan always ON without a DTC. |
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