Head Up Display (HUD) Image Adjustment Inoperative. Pontiac Bonneville 2001

For 1990-2009 cars only

Makes 🢒 Pontiac 🢒 2001 🢒 Bonneville 🢒 Body and Accessories 🢒 Instrument Panel, Gauges, and Console 🢒 Head Up Display (HUD) Image Adjustment Inoperative

Step	Action	Yes	No
Schematic Reference: Head Up Display Schematics
1	Did you perform the Head Up Display Diagnostic System Check?	Go to Step 2	Go to Diagnostic System Check - Head Up Display
2	Turn ON the ignition, with the engine OFF. Adjust the head up display (HUD) UP and DOWN. Does the HUD display adjust properly?	Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems	Go to Step 3
3	Turn OFF the ignition. Disconnect the HUD. Connect a test lamp between the HUD image up control circuit and a good ground. Turn ON the ignition, with the engine OFF. Move the HUD switch to the UP position. Does the test lamp illuminate?	Go to Step 4	Go to Step 5
4	Connect a test lamp between the HUD image down control circuit and a good ground. Move the HUD switch to the DOWN position. Does the test lamp illuminate?	Go to Step 8	Go to Step 6
5	Test the HUD image up control circuit for an open, a high resistance, or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 11	Go to Step 7
6	Test the HUD image down control circuit for an open, a high resistance, or a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 11	Go to Step 7
7	Inspect for poor connections at the harness connector of the HUD switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 11	Go to Step 9
8	Inspect for poor connections at the harness connector of the HUD. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition?	Go to Step 11	Go to Step 10
9	Replace the HUD switch. Refer to Head Up Display Switch Replacement . Did you complete the replacement?	Go to Step 11	--
10	Replace the HUD. Refer to Head Up Display Module Replacement . Did you complete the replacement?	Go to Step 11	--
11	Operate the system in order to verify the repair. Did you correct the condition?	System OK	Go to Step 2