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 | Press down the brake pedal. Do all of the stop lamps illuminate? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 |
3 | Is only one lamp inoperative? | Go to Step 4 | Go to Step 5 |
4 |
Does the test lamp illuminate? | Go to Step 12 | Go to Step 7 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 13 |
6 | Connect a 15-amp fused jumper wire between the battery positive voltage circuit of the stop lamp switch and the stop lamp supply voltage circuit of the stop lamp switch. Do the stop lamps illuminate? | Go to Step 9 | Go to Step 8 |
7 | Test for an open, high resistance, or short to ground in the stop lamp supply voltage circuit of the inoperative stop lamp. Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 16 | Go to Step 11 |
8 | Test for an open, high resistance, or short to ground in the stop lamp supply voltage circuit between the stop lamp switch and the body control module (BCM). Refer to Circuit Testing and Wiring Repairs . Did you find and correct the condition? | Go to Step 16 | Go to Step 11 |
9 | Inspect the stop lamp switch for proper adjustment. Refer to Stop Lamp Switch Adjustment . Did you find and correct the condition? | Go to Step 16 | Go to Step 10 |
10 | 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 16 | Go to Step 14 |
11 | 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 16 | Go to Step 15 |
12 | Repair an open or high resistance in the ground circuit of the inoperative stop lamp. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 16 | -- |
13 | Repair an open, high resistance, or short to ground in the battery positive voltage circuit of the stop lamp switch. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 16 | -- |
14 | Replace the stop lamp switch. Refer to Stop Lamp Switch Replacement . Did you complete the replacement? | Go to Step 16 | -- |
15 | Replace the BCM. Refer to Control Module References for replacement, setup, and programming. Did you complete the replacement? | Go to Step 16 | -- |
16 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
