Circuit/System Verification
- Visually inspect the brake fluid level through the brake master cylinder reservoir.Refer to: Brake Master Cylinder Reservoir Filling
- Disconnect the electrical connector: B20 Brake Fluid Level Sensor
- Perform the scan tool control function: Brake Hydraulics Test
- If the procedure/test does not pass
Refer to: Hydraulic Brake System Bleeding
- Go to next step: If the procedure/test passes
- If the procedure/test does not pass
- Confirm the B20 Brake Fluid Level Sensor electrical connector is connected.
- Ignition/Vehicle - Off - For greater than 10 s
- Clear DTCs.