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Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Memory Modules >> Front Control Module (FCM) - Electrical Diagnostics >> DTC Troubleshooting >> B162B-Left Low Beam Control Circuit Low >> Diagnostic Test
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Diagnostic Test

  1. INTERMITTENT CONDITION 
    1. Turn the ignition on.
    2. With the scan tool, clear all FCM DTCs.
    3. Turn the Headlamps on.
    4. With the scan tool read the DTC information.

      Does the scan tool read: B162B-LEFT LOW BEAM CONTROL CIRCUIT LOW?

      Yes 

      • Go to step  2

      No 

  2. (L43) LEFT LOW BEAM CONTROL CIRCUIT SHORT TO GROUND 
    Fig 1: Checking Left Low Beam Control Circuit Short To Ground
    GC0120073Courtesy of CHRYSLER LLC
    1. Turn the ignition off.
    2. Disconnect the FCM C2 harness connector.
    3. Disconnect the Left Headlamp harness connector.
    4. Measure the resistance between ground and the (L43) Left Low Beam Control circuit.

      Is the resistance below 5.0 Ohms?

      Yes 

      No