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Home >> Kia >> 2018 >> Optima Plug-In Hybrid EX >> Repair and Diagnosis >> External Pages >> Different car >> Section 107 (Body Control Module Diagnosis (PHEV)) >> DTC B1609-00: CAN Time-out SJB, FSJB >> Wiring Inspection >> CAN Communication Line Inspection

CAN Communication Line Inspection

WARNING: This page is about a different car, the 2017 Kia Optima. However, it is still accessible from the selected car via links, so may be relevant.
  1. Disconnect "BCM" connector and "IGPM" connector.
  2. Ignition "ON", Engine "OFF".
  3. Perform "Oscilloscope" procedure.
  4. Measure the resistance between "B_CAN High" terminal (PIN No. 22) of "BCM" harness connector and "B_CAN High" terminal (PIN No. 12) of IGPM harness connector.
  5. Measure the resistance between "B_CAN Low" terminal (PIN No. 21) of "BCM" harness connector and "B_CAN Low" terminal (PIN No. 11) of IGPM harness connector.

    Specification  : Below aprox. 1Ω

  6. Is the measured resistance within specifications?

    YES 

    • Fault is intermittent caused by poor contact in IGPM connector.
    • Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage.
    • Repair or replace as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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