SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 621 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESDUAL DVD REAR SEAT ENTERTAINMENT HEADREST DISPLAY MALFUNCTIONCIRCUIT/SYSTEM TESTING
2008 Chevrolet HHR LT, 2.4 P, Automatic

Circuit/System Testing

2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2011 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.

One Display Inoperative

  1. Ignition OFF, disconnect the X1 harness connector at the appropriate display.
  2. Ignition ON, test for less than 5 Ξ© between the ground circuit terminal 5 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the DVD control module.
  3. Ignition ON, test for B+ between the ignition voltage circuit terminal 6 and ground.
    • If less than the specified value, B+ circuit for an open/high resistance. If the circuit tests normal, replace the DVD control module.
  4. Ignition OFF, reconnect the X1 harness connector, and disconnect the X2 harness connector at the display.
  5. Ignition ON, test for 4.5-5.5 V between the terminals listed below and ground:
    • I2C Clock Signal - terminal 5
    • I2C Data - terminal 6
    • If less than specified range, test the signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the DVD control module.
    • If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the DVD control module.
  6. If all circuits test normal, replace the appropriate display.

Both Displays Inoperative

  1. Ignition OFF, disconnect the X1 harness connector at the DVD control module.
  2. Test for less 5 Ξ© between the ground circuit terminal 3 and ground.
    • If the greater than the specified range, test the ground circuit for an open/high resistance.
  3. Ignition ON, test for B+ between the accessory voltage circuit terminal and ground.
    • If less than the specified value, test the B+ circuit for a short to ground or an open/high resistance.
  4. Ignition OFF, Reconnect the X1 harness connector at the DVD control module
  5. Disconnect the X1 harness connector at the driver seat headrest.
  6. Ignition ON, test for less than 5 Ξ© between the ground circuit terminal 5 and ground.
    • If greater than the specified range, test the ground circuit for an open/high resistance. If the circuit tests normal, replace the DVD control module.
  7. Ignition ON, test for B+ between the ignition voltage circuit terminal 6 and ground.
    • If less than the specified value, B+ circuit for an open/high resistance. If the circuit tests normal, replace the DVD control module.
  8. Ignition OFF, reconnect the X1 harness connector, and disconnect the X2 harness connector at the display.
  9. Ignition ON, test for 4.5-5.5 V between the terminals listed below and ground:
    • I2C Clock Signal - terminal 5
    • I2C Data - terminal 6
    • If less than specified range, test the signal circuit for a short to ground or open/high resistance. If the circuit tests normal, replace the DVD control module.
    • If greater than specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the DVD control module.
  10. If all circuits test normal, replace the appropriate display.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.