Conditions for Clearing the DTC
- The current DTC clears when fault is no longer present but all history codes remain.
- The HUD receives a clear code command from the scan tool.
DTC B3634
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Head Up Display Schematics | |||
| 1 | Did you review the operation and perform the necessary inspections? | Go to Step 2 | Go to Symptoms - Instrument Panel, Gages and Console |
| 2 |
|
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
| 3 |
|
Go to Step 6 | Go to Step 4 |
| 4 | Test the HUD illuminated display signal circuit for a short to battery voltage or for a high resistance. Refer to Circuit Testing
and Wiring Repairs
in Wiring Systems. Did you find and correct the condition? |
Go to Step 9 | Go to Step 5 |
| 5 | Inspect for poor connections at 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 9 | Go to Step 7 |
| 6 | Inspect for poor connections at the HUD module. 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 9 | Go to Step 8 |
| 7 | Replace the HUD switch. Refer to Head Up Display Switch Replacement . Did you complete the replacement? |
Go to Step 9 | - |
| 8 | Replace the HUD. Refer to Control Module References
in Computer/Integrating Systems for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 9 | - |
| 9 |
|
System OK | Go to Step 2 |