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Home › Genesis › 2018 › 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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