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 on the headlamps.
5. Cover the lower windshield with a mat.
6. Set the DIM CONTROL slider switch on the head-up display (HUD) control to maximum intensity.
7. Observe the HUD. The night vision logo warm-up image should appear.
8. Wait 45 seconds.
9. Observe the HUD. The night vision camera thermal video image should appear.
10. Press the UP button on the HUD control, then press the DOWN button. The HUD image should move up and down on the windshield.

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. Turn OFF the ignition.
2. Disconnect the head-up display (HUD) connector.
3. Measure the resistance from the night vision display image down signal circuit at the head-up display (HUD) control to the ground circuit at the HUD control.
4. Press the image down button on the HUD control, then release the button.

Is the measured resistance less than 20ohms with the button released, and infinite (OL) with the button pressed?

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Go to Step 4

Go to Step 11

Test the night vision display image down signal circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 15

Go to Step 5

Test the night vision display image down 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 15

Go to Step 6

Test the night vision display image down signal circuit for a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 15

Go to Step 7

1. Turn OFF the ignition.
2. Measure the resistance from the night vision display image up signal circuit at the HUD control to the ground circuit at the HUD control.
3. Press the image up button on the HUD control, then release the button.

Is the measured resistance less than 20ohms with the button released, and infinite (OL) with the button pressed?

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Go to Step 8

Go to Step 11

Test the night vision display image up signal circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 15

Go to Step 9

Test the night vision display image up 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 15

Go to Step 10

Test the night vision display image up signal circuit for a short to battery positive voltage. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.

Did you find and correct the condition?

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Go to Step 15

Go to Step 13

Inspect the head-up display (HUD) control 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 15

Go to Step 12

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

Did you complete the replacement?

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Go to Step 15

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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 15

Go to Step 14

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 15

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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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