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Home >> Genesis >> 2021 >> G90 5.0 Ultimate, AWD >> Repair and Diagnosis >> Body & Frame >> Seats >> Power Seat Module-Rear Left Diagnosis >> DTC B1602-00: CAN Line Error >> Wiring Inspection >> CAN Communication Circuit Inspection

CAN Communication Circuit Inspection

  1. Connect all unit/module's connector.
  2. IG key "ON", Engine "OFF".
  3. Measure the voltage between "B-CAN High" terminal of RLPSM* harness connector and chassis ground.
  4. Measure the voltage between "B-CAN Low" terminal of RLPSM* harness connector and chassis ground.

    Specification  : Below 5V (1.5V~3.5V)

  5. Is the measured value within specifications?

    YES 

    • Disconnect B-CAN communication unit/module one by one and monitor DTC to find the cause.

      → If the DTC erase, substitute with a known-good unit/module and check for proper operation.

      → If the problem is corrected, replace the unit/module.

    • Go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

    • If the measured value is the battery voltage level (12V),

      → Repair short between the harness and the battery power.

    • If the measured value is the ground level (0V),

    → Repair short between "B-CAN High" line and "B-CAN Low" line.

    → Repair open/poor connection in the harness.

    → Repair short between the harness and the chassis ground.

    NOTE: RLPSM*: "REAR IMS CONTROL MODULE LH"
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