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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 64 (HEV Motor System Diagnosis (HEV)) >> DTC U1001: High Speed CAN Communication Bus (H-CAN) >> W/Harness Inspection >> H-CAN Register and Communication Line Inspection

H-CAN Register and Communication Line Inspection

WARNING: This page is about a different variant/trim than selected.

■ H-CAN Register and Communication Line Inspection 1 

  1. IG KEY OFF.
  2. Connect PCM, BMS connector.
  3. Measure resistance between terminal H-CAN High and H-CAN Low of PCM connector.

    Specification:  About 60

    Fig 1: Measuring Resistance Between Terminal H-CAN High And H-CAN Low Of PCM Connector
    G10602607Courtesy of HYUNDAI MOTOR AMERICA
  4. Is the measured resistance within specification?

    YES 

    • Check Each Module 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.
    • Go to next procedure.

    NO 

    • If the measured value is out of specification, repair or replace 120 CAN register (Inside of PCM and BMS) and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • If the measured value is lower than 10, repair or replace H-CAN High and H-CAN Low are short each other. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • If the measured value is, repair or replace the open in H-CAN High/H-CAN Low circuit. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • Go to next procedure.

■ H-CAN Register and Communication Line Inspection 2 

  1. IG KEY OFF
  2. Disconnect PCM, BMS connector.
  3. Measure resistance between terminal H-CAN Low and H-CAN High of BMS.
  4. Measure resistance between terminal H-CAN Low and H-CAN High of PCM.

    Specification:  About 120

    Fig 2: Measuring Resistance Between Terminal H-CAN Low And H-CAN High Of PCM
    G10602608Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the measured value within specification?

    YES 

    • Go to next procedure.

    NO 

    • If the measured value is out of specification, repair or replace 120 H-CAN register (Inside of PCM and BMS) and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • If the measured value is lower than 10, repair or replace H-CAN High and H-CAN Low are short each other. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • If the measured value is, repair or replace the open in H-CAN High/H-CAN Low circuit. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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