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 B3621
| 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 7 | Go to Step 4 |
| 4 | Test the HUD DOWN control circuit for an open or 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 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 9 | Go to Step 6 |
| 6 | Replace the HUD switch. Refer to Head Up Display Switch Replacement . Did you complete the replacement? |
Go to Step 9 | - |
| 7 | 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 9 | Go to Step 8 |
| 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 |