Schematic Reference: Head Up Display Schematics

Connector End View Reference: Instrument Panel, Gages, and Console Connector End Views

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

1. Turn ON the ignition, with the engine OFF.
2. Adjust the head up display (HUD) dimmer switch to full intensity, then back to full dim.

Does the HUD dim properly?

Go to Testing for Intermittent Conditions and Poor Connections

Go to Step 3

1. Turn OFF the ignition.
2. Disconnect the HUD display connector.
3. Turn ON the ignition, with the engine OFF.
4. Connect a test lamp between the HUD dim slider circuit and B+ at the instrument panel cluster (IPC) . Refer to Circuit Testing .
5. Adjust the HUD to full intensity, then back to full dim.

Does the test lamp go from full intensity then dim?

Go to Step 6

Go to Step 4

Test the HUD dim slider circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs .

Did you find and correct the condition?

Go to Step 8

Go to Step 5

Replace the HUD dimmer switch. Refer to Head Up Display Switch Replacement .

Did you find and correct the condition?

Go to Step 8

Go to Step 7

Replace the HUD. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 8

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Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

Did you complete the replacement?

Go to Step 8

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2