Did you review the night vision operation and perform the necessary inspections?

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Go to Step 2

Go to Symptoms - Night Vision

1. Position the vehicle approximately 8 meters (25 feet) from the nearest objects in front of the vehicle.
2. Cover the ambient light sensor.
3. Turn ON the ignition.
4. Turn the TWILIGHT control to OFF to turn off the twilight sentinel.
5. Turn on the headlamps.
6. Turn off the front fog lamps.
7. Cover the lower windshield with a mat.
8. Set the DIM CONTROL slider switch on the head-up display (HUD) control to maximum intensity.
9. Observe the HUD. The night vision logo warm-up image should appear.
10. Wait 45 seconds.
11. Observe the HUD. The night vision camera thermal video image should appear.
12. Turn off the headlamps. The HUD image should turn off.

Does the system operate normally?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

1. Install a scan tool.
2. Turn ON the ignition.
3. Turn off the headlamps.
4. Cover the ambient light sensor.
5. Using the scan tool, select instrument panel integration module (IPM).
6. From the Non-HVAC Data menu, select HUD Dimming.

Does the scan tool indicate that the HUD Dimming output is ON?

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Go to Step 4

Go to Diagnostic System Check - Lighting Systems in Lighting Systems

1. Turn OFF the ignition.
2. Connect the head-up display (HUD) connector.
3. Make sure the ambient light sensor is covered.
4. Turn ON the ignition.
5. Measure the voltage from the HUD active signal circuit at the HUD connector to ground while turning the headlamps on and off.

Is the measured voltage 10-15 volts with the headlamps off and less than 1.5 volts with the headlamps on?

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Go to Step 6

Go to Step 5

Test the HUD active signal circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

Go to Step 6

Inspect the head-up display (HUD) connector for poor connections. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 8

Go to Step 7

Replace the head-up display (HUD). Refer to Head Up Display Module Replacement .

Did you complete the replacement?

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Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

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