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Home >> Kia >> 2019 >> Optima S >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System Diagnosis (3 Of 3) (Except HEV) >> DTC B1490-00: OCS (Occupant Classification System) Defect >> Wiring Inspection >> CAN communication line inspection >> ■ Check short to ground in CAN communication line

■ Check short to ground in CAN communication line

  1. Ignition "OFF".
  2. Remove all connectors of each C-CAN communication control module (refer to the circuit diagram).
  3. Measure resistance between Pin No. 3 (High) terminal of Data Link Connector (DLC) and chassis ground.
  4. Measure resistance between Pin No. 11 (Low) terminal of Data Link Connector (DLC) and chassis ground.

    Specification:  ∞ (Infinity)Ω

  5. Is the measured resistance within specification?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or SRSCM's connector or was repaired and SRSCM memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration, or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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