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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 78 (Telematics Unit Diagnosis (HEV)) >> DTC B1690: Network Fail (Hi-CAN) >> W/Harness Inspection >> CAN Register And Communication Line Inspection

CAN Register And Communication Line Inspection

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■ CAN register and communication line inspection 1 

  1. Ignition OFF.
  2. Connect all module connectors in proper locations.
  3. Measure resistance between terminal 3 and 11 of diagnostic connector.

    Specification:  About 60

    Fig 1: Measuring Resistance Between Diagnostic Connector Terminal 3 And 11
    G10603302Courtesy of HYUNDAI MOTOR AMERICA
  4. Is the measured resistance within specifications?

    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 IPM) and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • If the measured value is lower than 10, repair or replace CAN High and 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 CAN High/CAN Low circuit. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • Go to next procedure.

■ CAN register and communication line inspection 2 

  1. Ignition OFF.
  2. Disconnect PCM and Instrument Cluster connectors.
  3. Measure resistance between terminal CAN Low and CAN High of PCM and Instrument Cluster Modules.

    Specification:  About 120

    Fig 2: Measuring Resistance Between PCM Terminal CAN Low And CAN High
    G10603303Courtesy of HYUNDAI MOTOR AMERICA
  4. Is the measured value within specification?

    YES 

    • Go to next procedure.

    NO 

    • If the measured value is out of specification, repair or replace 120 CAN register (Inside of PCM and IPM) and then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    • If the measured value is lower than 10, repair or replace CAN High and 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 CAN High/CAN Low circuit. And then, go to "VERIFICATION OF VEHICLE REPAIR " procedure.
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