Step | Action | Yes | No |
|---|---|---|---|
Schematic Reference: Exterior Lights Schematics | |||
1 | Was the Lighting System Diagnostic System Check performed? | Go to Step 2 | |
2 | Press the brake pedal. Do the stop lamps operate properly? | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | Go to Step 3 |
3 | Are all of the stop lamps inoperative? | Go to Step 4 | Go to Step 6 |
4 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 12 |
5 | Connect a 15 amp fused jumper between the battery positive voltage circuit of the stop lamp switch and the signal circuit of the stop lamp switch . Do the stop lamps illuminate? | Go to Step 9 | Go to Step 11 |
6 |
Does the test lamp illuminate? | Go to Step 7 | Go to Step 11 |
7 | Connect a test lamp between the stop lamp switch signal circuit of the inoperative stop lamp and the ground circuit of the inoperative stop lamp. Does the test lamp illuminate? | Go to Step 8 | Go to Step 10 |
8 | Inspect for poor connections at the inoperative stop lamp. 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 15 | Go to Step 13 |
9 | Inspect for poor connections at the stop lamp 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 15 | Go to Step 14 |
10 | 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 15 | -- |
11 | Repair an open or high resistance in the stop lamp switch signal circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 15 | -- |
12 | Repair an open or high resistance in the battery positive voltage circuit of the stop lamp switch. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you complete the repair? | Go to Step 15 | -- |
13 | Replace the inoperative stop lamp. Refer to Tail/Turn Signal Lamp Replacement and High Mount Stop Lamp Replacement . Did you complete the replacement? | Go to Step 15 | -- |
14 | Replace the stop lamp switch. Refer to Stop Lamp Switch Replacement in Hydraulic Brakes. Did you complete the replacement? | Go to Step 15 | -- |
15 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 2 |
