Schematic Reference: Exterior Lights Schematics

Connector End View Reference: Master Electrical Component List in Wiring Systems.

Did you perform the Lighting System Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Lighting Systems

1. Leave the trailer harness connected to the trailer.
2. Turn ON the park lamps.

Do the trailer park lamps illuminate?

Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

Repair an open or a high resistance in the park lamp supply voltage circuit of the trailer harness. Refer to Wiring Repairs or Connector Repairs in Wiring Systems.

Did you complete the repair?

Go to Step 4

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 3