LEMON Manuals: Even more car manuals for everyone
Home >> GMC >> 2016 >> Terrain SL, Gas >> Repair and Diagnosis >> External Pages >> Different car >> Section 21 (Cellular System, Entertainment System, And Navigation System) >> Diagnostic Information and Procedures >> Video Entertainment System Malfunction >> Circuit/System Testing

Circuit/System Testing

WARNING: This page is about a different car, the 2015 GMC Terrain and 2015 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
  1. Ignition OFF, disconnect the harness connector at the appropriate DVD display.
  2. Test for less than 10 Ω between the ground circuit terminals listed below and ground.
    • Ground terminal 8
    • Ground terminal 14
    • If 10 Ω or greater 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the ground circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, repair the open/high resistance in the ground connection.
    • If less than 10 Ω 
  3. Verify a test lamp illuminates between the B+ circuit terminal 1 and ground.
    • If the test lamp does not illuminate and the circuit fuse is good 
    1. Ignition OFF.
    2. Test for less than 2 Ω in the B+ circuit end to end.
      • If 2 Ω or greater, repair the open/high resistance in the circuit.
      • If less than 2 Ω, refer to Power Mode Mismatch .
    • If the test lamp does not illuminate and the circuit fuse is open 
    1. Ignition OFF.
    2. Test for infinite resistance between the B+ circuit and ground.
      • If less than infinite resistance, repair the short to ground on the circuit.
      • If infinite resistance, replace the appropriate P22 seatback video display.
    • If the test lamp illuminates 
  4. Verify a test lamp does NOT illuminate between the control circuit terminal 2 and ground.
    • If the test lamp illuminates 
    1. Disconnect the X1 harness at the A11 radio.
    2. Verify a test lamp does not illuminate between the control circuit and ground.
      • If the test lamp illuminates, repair the short to voltage on the circuit.
      • If the test lamp does not illuminate, replace the A11 radio.
    • If the test lamp does not illuminate 
  5. Ignition ON, A11 radio ON.
  6. Verify a test lamp illuminates between the control circuit terminal 2 and ground.
    • If the test lamp does not illuminate 
    1. Ignition OFF. Disconnect the X1 harness at the A11 radio.
    2. 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 the test lamp illuminates 
  7. Ignition ON, radio ON, DVD playing.
  8. Test for 190-210 HZ DC between the control circuit terminal 16 and ground.
    • 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. 
  9. Test for 190-210 HZ DC between the control circuit terminal 15 and ground.
    • 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. 
  10. Test for 1-3 V between the signal circuit terminals listed below and ground.
    • terminal 9
    • terminal 10
    • If less than 1 V 
    1. Ignition OFF, disconnect the X3 harness connector at the A11 radio.
    2. 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
    3. 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 greater than 3 V 
    1. Ignition OFF, disconnect the X3 harness connector at the A11 radio. Ignition ON.
    2. 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, replace the A11 radio.
    • If between 1-3 V 
  11. Test normal or replace the appropriate P22 seatback video display.
scientia non olet · About LEMON Manuals