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Pinpoint Test L: The Front Controls Interface Module (FCIM) Does Not Respond To The Diagnostic Scan Tool

WARNING: This page is about a different variant/trim than selected.
  1. L1 CHECK THE MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) TERMINATION RESISTANCE 
    • Ignition OFF.
    • Disconnect negative battery cable.
    • Disconnect the diagnostic scan tool cable from the DLC  .
    • Disconnect: GWM C2431  .
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2431-23  OHM C2431-22 

    Is the resistance between 108 and 132 ohms? 

    1. Yes  : GO to  L3
    2. No  : GO to L2 
  2. L2 CHECK THE MEDIUM SPEED CONTROLLER AREA NETWORK (MS-CAN) CIRCUITS BETWEEN THE FCIM (FRONT CONTROLS INTERFACE MODULE) AND THE GWM (GATEWAY MODULE A) FOR AN OPEN 
    • Disconnect FCIM C2402A  .
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2402A-17  OHM C2431-23 
      C2402A-18  OHM C2431-22 

    Are the resistances less than 3 ohms? 

    1. Yes  : GO to  L5
    2. No  : REPAIR the circuit in question.
  3. L3 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) VOLTAGE SUPPLY CIRCUIT FOR AN OPEN 
    • Connect negative battery cable.
    • Ignition ON.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2402A-26  VOLTAGE Ground

    Is the voltage greater than 11 volts? 

    1. Yes  : GO to L4 
    2. No  : VERIFY the BCM  fuse 12 (7.5A) is OK. If OK, REPAIR the circuit. If not OK, REFER to the SYSTEM WIRING DIAGRAMS to identify the possible causes of the circuit short.
  4. L4 CHECK THE FCIM (FRONT CONTROLS INTERFACE MODULE) GROUND CIRCUIT FOR AN OPEN 
    • Ignition OFF.
    • Disconnect negative battery cable.
    • Measure:
      Positive Lead Measurement/Action Negative Lead
      C2402A-1  OHM Ground

    Is the resistance less than 3 ohms? 

    1. Yes  : CONNECT negative battery cable. GO to L5 
    2. No  : REPAIR the circuit.
  5. L5 CHECK FOR CORRECT FCIM (FRONT CONTROLS INTERFACE MODULE) OPERATION 
    • Ignition OFF.
    • Disconnect and inspect all the FCIM  connectors.
    • Repair:
      • corrosion (install new connector or terminals - clean module pins)
      • damaged or bent pins - install new terminals/pins
      • pushed-out pins - install new pins as necessary
    • Reconnect the FCIM  connectors. Make sure they seat and latch correctly.
    • Operate the system and determine if the concern is still present.

    Is the concern still present? 

    1. Yes  : CHECK OASIS  for any applicable Technical Service Bulletins (TSBs). If a TSB  exists for this concern, DISCONTINUE this test and FOLLOW TSB  instructions. If no Technical Service Bulletins (TSBs) address this concern, INSTALL a new FCIM  . Refer to the appropriate Information and Entertainment System - General Information article for the procedure.
    2. No  : The system is operating correctly at this time. The concern may have been caused by module connections. ADDRESS the root cause of any connector or pin issues.
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