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Home >> Hyundai >> 2021 >> Ioniq Hybrid SEL >> Repair and Diagnosis >> Accessories & Equipment >> Headlights >> Adaptive Front Lighting System Diagnosis (HEV) >> DTC B1603-88: CAN Bus Off Fault >> Wiring Inspection >> CAN Communication Circuit Inspection >> Check CAN BUS Short to Ground

Check CAN BUS Short to Ground

  1. Ignition "OFF".
  2. Disconnect CAN communication modules.
  3. Measure the resistance between CAN-HIGH terminal of DLC harness connector and chassis ground
  4. Measure the resistance between CAN-LOW terminal of DLC harness connector and chassis ground

    Specification:  Discontinuity (Infinite Ω)

  5. Is the measured resistance within specification?

    YES 

    NO