Circuit/System Testing
WARNING: This page is about a different car, the 2018 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF and all vehicle systems OFF, disconnect the X2 harness connector at the K161 Performance Data Recorder and the X1 harness connector at the A11 Radio. It may take up to 2 min for all vehicle systems to power down.
- Test for infinite resistance between the signal circuit K161 Performance Data Recorder harness connector X2 terminal 6 and ground.
- If less than infinite resistance
Repair the short to ground on the circuit.
- Go to next step: If infinite resistance
- If less than infinite resistance
- Ignition OFF, connect X1 harness connector at the A11 Radio.
- Ignition ON, performance data recorder system ON.
- Test for less than 1 V between the signal circuit terminal 6 and ground.
- If 1 V or greater
- Ignition OFF, disconnect the X1 harness connector at the A11 Radio. Ignition ON.
- Test for less than 1 V between the signal circuit and ground.
- If 1 V or greater, repair the short to voltage in the circuit.
- If less than 1 V, replace the A11 Radio.
- Go to next step: If less than 1 V
- Replace the K161 Performance Data Recorder.