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Home >> Hyundai >> 2015 >> Sonata Eco >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 120 (Air Conditioning System Diagnosis (HEV)) >> DTC B1695: CAN Time-Out Comp >> W/Harness Inspection >> E-Comp CAN Circuit Inspection

E-Comp CAN Circuit Inspection

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

■ Check for Open in Harness 

  1. Ignition "OFF"
  2. Disconnect E-Comp LV connector and A/C Control Module main harness connector.
  3. Measure resistance between E-Comp CAN High Terminal of E-Comp LV connector and E-Comp CAN High Terminal of A/C Control Module harness connector.
  4. Measure resistance between E-Comp CAN Low Terminal of E-Comp LV connector and E-Comp CAN Low Terminal of A/C Control Module harness connector.

    Specification  : below 1

    Fig 1: Measuring Resistance Between E-Comp CAN Low Terminal Of E-Comp LV Connector And E-Comp CAN Low Terminal Of A/C Control Module Harness Connector
    G10591184Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the fuse blown?

    YES 

    • Go to next procedure.

    NO 

■ Check for Open in Harness 

  1. Ignition "OFF"
  2. Disconnect E-Comp LV connector and A/C Control Module main harness connector.
  3. Measure resistance between Interlock Out terminal of E-Comp LV connector and Interlock Out terminal of A/C Control Module harness connector.
  4. Measure resistance between Interlock In terminal of E-Comp LV connector and Interlock In terminal of A/C Control Module harness connector.

    Specification  : below 1

    Fig 2: Measuring Resistance Between Interlock Out Terminals Of E-Comp LV Connector And A/C Control Module Harness Connector
    G10591185Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the measured resistance within specification?

    YES 

    • Go to next procedure.

    NO 

■ Check Short to Ground in Harness 

  1. Ignition "OFF"
  2. Disconnect E-Comp LV connector and A/C Control Module main harness connector.
  3. Measure resistance between E-Comp CAN High Terminal of A/C Control Module harness connector and chassis ground.
  4. Measure resistance between E-Comp CAN Low Terminal of A/C Control Module harness connector and chassis ground.

    Specification  : Infinity

    Fig 3: Measuring Resistance Between E-Comp CAN Low Terminal Of A/C Control Module Harness Connector And Chassis Ground
    G10591186Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the measured resistance within specification?

    YES 

    NO 

■ Check Short to Ground in Harness 

  1. Ignition "OFF"
  2. Disconnect E-Comp LV connector and A/C Control Module main harness connector.
  3. Measure resistance between Interlock Out terminal of A/C Control Module harness connector and chassis ground.
  4. Measure resistance between Interlock In terminal of A/C Control Module harness connector and chassis ground.

    Specification:  Infinity

    Fig 4: Measuring Resistance Between Interlock In Terminal Of A/C Control Module Harness Connector And Chassis Ground
    G10591187Courtesy of HYUNDAI MOTOR AMERICA
  5. Is the measured resistance within specification?

    YES 

    • Substitute with a known-good E-Compressor and check for proper operation. If the problem is corrected, replace E-Compressor and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO 

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