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Home >> Kia >> 2018 >> Sorento SX, 4WD >> Repair and Diagnosis >> Transmission >> Transfer Case >> 4WD Control System Diagnosis >> DTC U1121: Lost Communication With Electric Stability Program Module >> Wiring Inspection >> CAN Communication Line Inspection >> CAN Resistor Inspection

CAN Resistor Inspection

  1. Ignition switch "OFF"
  2. Disconnect battery (-) cable.
  3. Refer to "REMOVAL and REMOVAL " and disconnect PCM and IGPM connector.
  4. Measure the resistance between Pin No. 13 (P-CAN High) and Pin No. 14 (P-CAN Low) terminal of IGPM.
  5. Measure the resistance between Pin No. 10 (P-CAN High) and Pin No. 35 (P-CAN Low) terminal of PCM.

    Specification:  Approx. 120 Ω

  6. Is the measured value within specification?

    YES 

    NO 

    • Carefully re-do this troubleshooting guide steps.
    • If no problems were found with the circuits or connectors, replace IGPM or PCM and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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