Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Lighting Systems Connector End Views or Data Communication Connector End Views | |||||||||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | |||||||
2 | Depress the brake pedal. Does the system operate normally? | Go to Step 3 | |||||||
3 |
Do the brake lamps center high mount stop lamp (CHMSL) remain illuminated? | Go to Step 4 | Go to Step 7 | ||||||
4 | Disconnect the body control module (BCM) connector C 6. Do the brake lamps remain illuminated? | Go to Step 9 | Go to Step 5 | ||||||
5 | Disconnect the BCM connector C 5. Does the CHMSL remain illuminated? | Go to Step 10 | Go to Step 6 | ||||||
6 | Test the following circuits for an open or short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition? | Go to Step 13 | Go to Step 8 | ||||||
7 | Inspect for poor connections at the harness connector of the stop lamp switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 13 | Go to Step 11 | ||||||
8 | Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 13 | Go to Step 12 | ||||||
9 | Repair the short to voltage in the stop lamp supply voltage circuit. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 13 | -- | ||||||
10 | Repair the short to voltage in the CHMSL supply voltage circuit. Refer to Wiring Repairs . Did you complete the repair? | Go to Step 13 | -- | ||||||
11 | Replace the stop lamp switch. Refer to Stop Lamp Switch Replacement . Did you complete the replacement? | Go to Step 13 | -- | ||||||
12 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 13 | -- | ||||||
13 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | ||||||
