Circuit/System Testing

Ignition OFF and all vehicle systems OFF. It may take up to 2 minutes for all vehicle systems to power down
Disconnect the harness connectors at both of the P22 seatback video displays.
Test for 190-210 HZ DC between the control circuit terminal 16 and ground at each display.
- If not between 190-210 HZ DC.
1. Ignition OFF, disconnect the X3 harness connector at the A11 radio.
2. Ignition ON.
3. Test for less than 1 V between the control 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 control 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 control 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 between 190-210 HZ DC.
Ignition OFF. Connect the harness connector at the P22E driver seatback video display.
Ignition ON, radio ON, DVD playing.
Test for 190-210 HZ DC between the video brightness control circuit terminal 16 and ground at the P22F passenger seatback video display.
- If not between 190-210 HZ DC.
  Test or replace the P22E driver seatback video display
- If between 190-210 HZ DC.
Test or replace the P22F passenger seatback video display.