Circuit/System Testing

WARNING: This page is about a different car, the 2012 GMC Terrain and 2012 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down
Disconnect the harness connector at the P22E driver seatback video display.
Test for less than 25 Ω between the audio signal (-) circuit terminal 5 and ground.
- If 25 Ω or greater
1. Ignition OFF, disconnect the X1 connector at the A11 radio.
2. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the A11 radio.
- If less than 25 Ω
Ignition ON, radio ON, DVD playing with audio present.
Test for a varying voltage from 10 mV-250 mV AC between the audio signal (+) circuits listed below and ground:
- terminal 6
- terminal 7
- If not between 10 mV-250 mV AC and/or not varying
1. Ignition OFF, disconnect the X1 harness connector at the A11 radio.
2. Ignition ON.
3. Test for less than 1 V between the signal circuit and ground.
  - If 1 V or greater, repair the short to voltage on the circuit.
  - If less than 1 V
4. Ignition OFF.
5. Test for infinite resistance between the signal circuit and ground.
  - If less than infinite resistance, repair the short to ground on the circuit.
  - If infinite resistance
6. Test for less than 2 Ω in the signal circuit end to end.
  - If 2 Ω or greater, repair the open/high resistance in the circuit.
  - If less than 2 Ω, replace the A11 radio.
- If varying from 10 mV-250 mV AC
Test or replace the P22E driver seatback video display.