Step | Action | Yes | No | ||||||
|---|---|---|---|---|---|---|---|---|---|
Schematic Reference: Exterior Lights Schematics | |||||||||
1 | Did you review the Exterior Lighting Systems Description and Operation and perform the necessary inspections? | Go to Step 2 | |||||||
2 | Verify that the stop lamps are inoperative. Do the stop lamps operate normally? | 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 | Inspect the lamp for poor connector terminal contact or inoperative LED. Was a problem found? | Go to Step 10 | Go to Step 9 | ||||||
5 | Connect a test lamp from ground to the CHMSL supply voltage circuit terminal of the inoperative lamp socket or connector and apply the service brake. Refer to Circuit Testing in Wiring Systems. Does the test lamp illuminate? | Go to Step 7 | Go to Step 6 | ||||||
6 | Remove the stop lamp switch and install a fused jumper between the stop lamp switch battery positive voltage circuit terminal and the stop lamp switch signal circuit terminal of the stop lamp switch connector. Do the stoplamps illuminate? | Go to Step 11 | Go to Step 8 | ||||||
7 | Repair the open or high resistance in the ground circuit. Refer to Wiring Repairs in Wiring Systems. Is the repair complete? | Go to Step 12 | -- | ||||||
8 | Repair the open, high resistance or short to ground in one of the following circuits. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete? | Go to Step 12 | -- | ||||||
9 | Repair the open or high resistance in one of the following circuits. Refer to Wiring Repairs in Wiring Systems.
Is the repair complete? | Go to Step 12 | -- | ||||||
10 | Repair the connector or replace the high mount stop lamp assembly. Refer to High Mount Stop Lamp Replacement . Is the repair complete? | Go to Step 12 | -- | ||||||
11 | Replace the stop lamp switch. Refer to Stop Lamp Switch Replacement . Did you complete the repair? | 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 | ||||||
