Circuit/System Verification

Ignition ON.
Verify that DTC C0110 is not set.
- If DTC C0110 is set
  Refer to DTC C0110 .
- Go to next step: If DTC C0110 is not set
Verify that DTC C0115 does not set while driving the vehicle under normal braking conditions.
- If DTC C0115 sets
  Replace the Q5 Brake Pressure Modulator.
- Go to next step: If DTC C0115 does not set
All OK.