Diagnostic Fault Information
WARNING: This page is about a different car, the 2017 Cadillac ATS. 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 |
|---|---|---|---|---|
| Vacuum Pump Relay Switch B+ | 1 | 1 | - | - |
| Vacuum Pump Relay Coil Ignition | 1 | 1 | - | - |
| Vacuum Pump Relay Control | 2 | C027B 00 | C027B 00 | - |
| Brake Booster Pump Motor Control | 1 | 1 | 2 | - |
| Brake Booster Pump Motor Ground | - | 1 | - | - |
| 1. Brake Booster Pump Motor Always Off 2. Brake Booster Pump Motor Always On |
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