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 | Observe the stop lamps while pressing the brake pedal. Does the system operate normally? | Go to Step 3 | |||||||
3 | Are all the stop lamps inoperative? | Go to Step 6 | Go to Step 4 | ||||||
4 | Test the supply voltage circuit of the inoperative lamp for high resistance, an open, or a short to ground. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 14 | Go to Step 5 | ||||||
5 | Test the ground circuit of the inoperative lamp for high resistance or an open. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 14 | Go to Step 8 | ||||||
6 | Disconnect the stop lamp switch. Did the stop lamps illuminate? | Go to Step 9 | Go to Step 7 | ||||||
7 | Test for the following conditions. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition? | Go to Step 14 | Go to Step 10 | ||||||
8 | Inspect for poor connections at the harness connector of the bulb or high mount stop lamp. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 14 | Go to Step 11 | ||||||
9 | Inspect for poor connections at the harness connector of the switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 14 | Go to Step 12 | ||||||
10 | 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 14 | Go to Step 13 | ||||||
11 | Replace the stop lamp. Refer to Tail Lamp Bulb Replacement or High Mount Stop Lamp Replacement . Did you complete the replacement? | Go to Step 14 | -- | ||||||
12 | Replace the stop lamp switch. Refer to Stop Lamp Switch Replacement . Did you complete the replacement? | Go to Step 14 | -- | ||||||
13 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 14 | -- | ||||||
14 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | ||||||
