Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics | |||
1 | Did you perform the Lighting System Diagnostic System Check? | 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 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 16 | Go to Step 17 |
5 | Are all of the stop lamps, including the high mounted stop lamps, inoperative? | Go to Step 6 | Go to Step 8 |
6 |
Does the test lamp illuminate? | Go to Step 7 | Go to Step 18 |
7 | Connect a 20 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 12 | Go to Step 19 |
8 | Are the high mounted stop lamps inoperative? | Go to Step 9 | Go to Step 11 |
9 | Test the stop lamp supply voltage circuit of the high mounted stop lamps for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 10 |
10 | Test the ground circuit of the high mounted stop lamps for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 15 |
11 | Test for an open or high resistance in the stop lamp supply voltage circuit between splice 206 and the turn/hazard-headlamp switch assembly. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and correct the condition? | Go to Step 23 | Go to Step 14 |
12 | 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 23 | Go to Step 13 |
13 | Inspect the brake switch for proper adjustment. Refer to Stop Lamp Switch Adjustment in Hydraulic Brakes. Did you find and correct the condition? | Go to Step 23 | Go to Step 20 |
14 | Inspect for poor connections at the harness connector of the turn/hazard-headlamp 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 23 | Go to Step 21 |
15 | Inspect for poor connections at the harness connector of the high mounted stop lamps. 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 23 | Go to Step 22 |
16 | Repair an open or high resistance in the ground circuit of the inoperative lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
17 | Repair an open or high resistance in the stop lamp supply voltage circuit of the inoperative lamp. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
18 | 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 23 | -- |
19 | Repair an open or high resistance in the stop lamp supply voltage circuit between the brake switch and splice 206. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 23 | -- |
20 | Replace the brake switch. Refer to Stop Lamp Switch Replacement in Hydraulic Brakes. Did you complete the replacement? | Go to Step 23 | -- |
21 | Replace the turn/hazard-headlamp switch. Refer to Turn Signal Multifunction Switch Replacement in Steering Wheel and Column. Did you complete the replacement? | Go to Step 23 | -- |
22 | Replace the high mounted stop lamp assembly. Refer to High Mount Stop Lamp Replacement . Did you complete the replacement? | Go to Step 23 | -- |
23 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 |
