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Home >> Hyundai >> 2009 >> Elantra GLS, Standard >> Repair and Diagnosis >> Engine Performance >> System >> DTC Troubleshooting Procedures >> DTC U0001 Can Communication Malfunction >> Signal Circuit Inspection >> Check Can Communication Line For Short To Battery

Check Can Communication Line For Short To Battery

  1. Disconnect the connectors related to the CAN communication
  2. Ignition "ON" & Engine "OFF"
  3. Measure voltage between terminal 77 of the ECM harness connector and chassis ground.
  4. Measure voltage between terminal 78 of the ECM harness connector and chassis ground.

    Specification:  Approx. 0V

    Fig 1: Measuring Voltage Between Terminals 77 And 78 Of ECM Harness Connector And Chassis Ground
    G05363922Courtesy of HYUNDAI MOTOR CO.
  5. Is voltage within the specification?

    YES 

    • Go to next step as below

    NO 

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