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 |
Does the test lamp illuminate? | Go to Testing for Intermittent Conditions and Poor Connections | Go to Step 3 | ||||||
3 |
Does the test lamp illuminate? | Go to Step 4 | Go to Step 8 | ||||||
4 |
Does the test lamp illuminate? | Go to Step 5 | Go to Step 9 | ||||||
5 |
Does the test lamp illuminate? | Go to Step 6 | Go to Step 10 | ||||||
6 |
Does the test lamp illuminate? | Go to Step 7 | Go to Step 11 | ||||||
7 | Inspect for poor connections at the trailer stop relay. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs . Did you find and correct the condition? | Go to Step 13 | Go to Step 12 | ||||||
8 | Repair the following in the switch side voltage supply circuit of the trailer stop relay:
Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 13 | -- | ||||||
9 | Repair the following in the coil side control circuit of the trailer stop relay:
Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 13 | -- | ||||||
10 | Repair an open or high resistance in the coil side ground circuit of the trailer stop relay. Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 13 | -- | ||||||
11 | Repair the following in the stop lamp circuit of the tractor trailer receptacle:
Refer to Circuit Testing and Wiring Repairs . Did you complete the repair? | Go to Step 13 | -- | ||||||
12 | Replace the trailer stop relay. Refer to Relay Replacement . Did you complete the replacement? | Go to Step 13 | -- | ||||||
13 | Operate the system in order to verify the repair. Did you correct the condition? | System OK | Go to Step 3 | ||||||
