Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics | |||
1 | Did you perform the Diagnostic System Check - Vehicle? | Go to Step 2 | Go to Diagnostic System Check - Vehicle in Vehicle DTC Information |
2 | Press down the brake pedal. Do all of the stop lamps illuminate? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | 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 9 | Go to Step 10 |
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 7 |
6 | Connect a 15-amp fused jumper wire between the battery positive voltage circuit of the brake switch and the stop lamp supply voltage circuit. Do the stop lamps illuminate? | Go to Step 8 | Go to Step 11 |
7 | Test the stop lamp supply voltage circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 12 |
8 | Inspect for poor connections at the harness connector of the brake switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 14 | Go to Step 13 |
9 | Repair an open or high resistance in the ground circuit of the inoperative stop lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
10 | Repair an open or high resistance in the stop lamp supply voltage circuit of the inoperative stoplamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
11 | Repair an open or high resistance in the stop lamp supply voltage circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
12 | Repair an open, high resistance, or short to ground in the battery positive voltage circuit of the brake switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 14 | -- |
13 | Replace the brake switch. Refer to Stop Lamp Switch Replacement in Hydraulic Brakes. 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 |
