Schematic Reference: Head Up Display Schematics

Did you perform the Head Up Display Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Head Up Display

1. Turn the ignition ON, with the engine OFF.
2. Turn the HUD dimmer switch to the OFF position.

Does the HUD image turn off?

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

Go to Step 3

1. Turn the ignition OFF.
2. Disconnect the HUD switch.
3. Turn the ignition ON, with the engine OFF.

Does the HUD image turn off?

Go to Step 4

Go to Step 6

Connect a test lamp between the ground circuit of the HUD switch and battery positive voltage.

Does the test lamp illuminate?

Go to Step 5

Go to Step 7

Inspect for poor connections at the harness connector of the HUD switch. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 8

Inspect for poor connections at the harness connector of the HUD. Refer to Testing for Intermittent Conditions and Poor Connections and to Connector Repairs in Wiring Systems.

Did you find and correct the condition?

Go to Step 10

Go to Step 9

Repair the open or the high resistance in the ground circuit of the HUD switch. Refer to Wiring Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 10

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

Did you complete the replacement?

Go to Step 10

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Replace the HUD. Refer to Head Up Display Module Replacement .

Did you complete the replacement?

Go to Step 10

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2