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Home >> Jeep >> 2010 >> Wrangler Islander, Automatic >> Repair and Diagnosis >> Accessories & Equipment >> Exterior Lights >> (Cabin Compartment Node (CCN) - Electrical Diagnostics) >> DTC Troubleshooting >> DTC B161A: Courtesy/Dome Lamp Control Circuit >> Diagnostic Test

Diagnostic Test

  1. TEST FOR INTERMITTENT CONDITION 
    1. Turn the ignition on.
    2. Turn the Courtesy Lamps on.
    3. With the scan tool, read DTCs.

      Does the scan display this DTC as active?

      Yes 

      • Go to step  2

      No 

  2. CHECK THE (M24) COURTESY LAMPS DRIVER CIRCUIT FOR A SHORT TO GROUND 
    Fig 1: Measuring Resistance Between Ground & Courtesy Lamp Driver Circuit
    GC0132045Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the Dome Lamp.
    3. Disconnect the Cargo Lamp (4 door).
    4. Disconnect the Cluster C2 harness connector.
    5. Measure the resistance between ground and the (M24) Courtesy Lamp Driver circuit.

      Is the resistance below 5.0 Ohms?

      Yes  

      No  

      • Go to step  3
  3. CHECK THE (M24) COURTESY LAMPS DRIVER CIRCUIT FOR AN OPEN 
    Fig 2: Measuring Resistance Of Courtesy Lamp Driver Circuit
    GC0100433Courtesy of CHRYSLER LLC
    1. Measure the resistance of the (M24) Courtesy Lamp Driver circuit.

      Is the resistance above 5 Ohms?

      Yes  

      No