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Home >> Jeep >> 2009 >> Commander Overland, RWD >> Repair and Diagnosis (Single Page) >> Engine Performance >> Ignition System >> Front Control Module (FCM) - Electrical Diagnostics >> DTC Troubleshooting >> U1108-Additional Can B Ecu Detected >> Diagnostic Test
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Diagnostic Test

  1. RECONFIGURE THE FRONT CONTROL MODULE 
    1. Turn the ignition on.
    2. Using the scan tool, select network view and press the gateway button. This will list the CAN modules on the vehicle. Read and record the listed modules.
    3. Using the scan tool, select FCM, miscellaneous functions then add/remove ECUs.
    4. Using the scan tool, add or remove the module that was not configured in the FCM.
    5. Using the scan tool, erase DTCs.
    6. Cycle the ignition from on to off 3 times and read the active FCM DTCs.

      Does the scan tool display this DTC as active?

      Yes 

      No