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Home >> Jeep >> 2007 >> Wrangler Rubicon, Standard >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Headlights >> Lighting Systems - Exterior - Electrical Diagnostics >> Lamps/Lighting - Exterior-Electrical/Diagnostics >> DTC Troubleshooting >> B166F-Right Trailer Tow Lamp Control Circuit Low >> Diagnostic Test

Diagnostic Test

  1. 1) INTERMITTENT CONDITION 

    Turn the ignition on.

    With the scan tool, clear all DTC's.

    Turn on the Right Turn Signal.

    With the scan tool, read DTC's.

    Does the scan tool display active: B166F-RIGHT TRAILER TOW LAMP CONTROL CIRCUIT LOW? 

    Yes 

    1. Go to  2).

    No 

    1. The condition that caused this symptom is currently not present. Check for an intermittent condition by inspecting the related wiring harness for chafed, pierced, pinched, and partially broken wires. Also, inspect the related connectors for broken, bent, pushed out, spread, corroded, or contaminated terminals. Repair as necessary.
    2. Perform BODY VERIFICATION TEST - VER 1 .
  2. 2) (L674) RIGHT TRAILER TOW LAMP CONTROL CIRCUIT SHORT TO GROUND 

    Turn the ignition off.

    Disconnect the TIPM C6 harness connector.

    Measure the resistance between ground and the (L674) Right Trailer Tow Lamp Control circuit.

    Is the resistance above 10k ohms? 

    Yes 

    1. Replace the Totally Integrated Power Module (TIPM) in accordance with the Service Information.
    2. Perform BODY VERIFICATION TEST - VER 1 .

    No 

    1. Repair the (L674) Right Trailer Tow Lamp Control circuit for a short to ground.
    2. Perform BODY VERIFICATION TEST - VER 1 .
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