Conditions for Clearing the DTC
WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- The current DTC will clear when the fault is no longer present.
- The ignition key must be cycled OFF and ON.
- A history DTC clears after 100 consecutive ignition cycles in which no faults have occurred.
- Clear the DTC with a scan tool.
DTC B3903
| Step | Action | Yes | No |
|---|---|---|---|
| Schematic Reference: Exterior Lights Schematics Connector End View Reference: Master Electrical Component List |
|||
| 1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to DIAGNOSTIC SYSTEM CHECK - VEHICLE |
| 2 |
|
Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections |
| 3 | Is DTC B3903 02 set? | Go to Step 5 | Go to Step 4 |
| 4 |
|
Go to Step 6 | Go to Step 7 |
| 5 | Test the stop lamp switch signal circuit for a short to ground. Refer to Circuit Protection - Circuit Breakers
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 10 | Go to Step 8 |
| 6 | Test the stop lamp switch signal circuit for a short to voltage. Refer to Circuit Protection - Circuit Breakers
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 10 | Go to Step 8 |
| 7 | Test the stop lamp switch signal circuit for an open or high resistance. Refer to Circuit Protection - Circuit Breakers
and Wiring Repairs
. Did you find and correct the condition? |
Go to Step 10 | Go to Step 8 |
| 8 | Inspect for poor connections at the harness connector of the body control module (BCM). Refer to Testing for Intermittent Conditions and Poor Connections
and Connector Repairs
. Did you find and correct the condition? |
Go to Step 10 | Go to Step 9 |
| 9 | Replace the BCM. Refer to Control Module References
for replacement, setup, and programming. Did you complete the replacement? |
Go to Step 10 | - |
| 10 |
|
Go to Step 2 | System OK |