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Home >> Kia >> 2016 >> Optima EX >> Repair and Diagnosis >> Brakes >> Parking Brake System >> Electric Parking Brake Diagnosis - Optima (Except HEV) >> DTC C1616-08: C-CAN Bus Off >> Component Inspection

Component Inspection

  1. Refer to "INSTRUMENT CLUSTER and HEATER & A/C CONTROL UNIT - OPTIMA (EXCEPT HEV) " and remove necessary parts to get access to Cluster, ACU, IGPM and other control units that connected to C-CAN Communication circuit.
  2. Connect KDS/GDS to Data Link Connector (DLC).
  3. Ignition "ON"
  4. Disconnect unit connector one after the other.
  5. Check for control unit causing the fault by communicating with Cluster, ACU, IGPM and other systems with KDS/GDS.
  6. Does the status of DTC C161608 changes to "History" when certain control module connector is disconnected?

    YES 

    • Carefully re-do this troubleshooting guide steps.
    • If problem still occurs, replace control unit that causing the fault and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • Carefully re-do this troubleshooting guide steps.
    • If problem still occurs, replace IGPM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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