Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
- The current DTC becomes history when the fault is no longer present.
- The history DTC clears after 40 malfunction free ignition cycles.
- 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 to 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 to 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 to 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 Head Up Display Replacement . Did you complete the replacement? |
Go to Step 9 | - |
| 9 |
|
System OK | Go to Step 2 |