Step | Action | Yes | No | ||||
|---|---|---|---|---|---|---|---|
Schematic Reference: Exterior Lights Schematics Connector End View Reference: Lighting Systems 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 12 | 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 12 | Go to Step 8 | ||||
6 | Test the 5 volt signal circuit of the brake pedal position sensor 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 12 | Go to Step 7 | ||||
7 | Test the following circuits for a short to ground, high resistance or an open. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition? | Go to Step 12 | Go to Step 9 | ||||
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 12 | Go to Step 10 | ||||
9 | Inspect for poor connections at the harness connector of the Sensor. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 12 | Go to Step 11 | ||||
10 | Replace the stop lamp. Refer to Tail Lamp Replacement or High Mount Stop Lamp Replacement . Did you complete the replacement? | Go to Step 12 | -- | ||||
11 |
Important: A calibration of the Brake Pedal Position Sensor needs to be performed upon replacement. Refer to Brake Pedal Position Sensor Calibration . Replace the brake pedal position sensor. Refer to Brake Pedal Position Sensor Replacement . Did you complete the replacement? | Go to Step 12 | -- | ||||
12 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | ||||
