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Home >> Hyundai >> 2004 >> Accent Base >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (2 Of 2) >> DTC Troubleshooting Procedures >> DTC P2400: Evaporative Emission System Leak Detection Pump Control Circuit/Open >> Control Circuit Inspection

Control Circuit Inspection

  1. Check for open in harness
    1. Ignition "OFF"
    2. Disconnect DM-TL connector.
    3. Ignition "ON" & Engine "OFF"
    4. Measure voltage between terminal 1 of DM-TL harness connector and chassis ground.

      Specification: approximately 4.2V

      Fig 1: Measuring Voltage Between Terminal 1 Of DM-TL Harness Connector And Chassis Ground
      G03852096Courtesy of HYUNDAI MOTOR CO.
    5. Is measure voltage within Specification?

      YES 

      NO 

      • Short circuit to chassis ground between DM-TL harness connector and PCM harness connector
      • Open circuit between DM-TL harness connector and PCM harness connector
      • Repair as necessary and then go to "VERIFICATION OF VEHICLE REPAIR " procedure.
    NOTE: In case, when the DM-TL connector is disconnected, the voltage of DM-TL terminal 1 is 0 V.
    • Possible cause: Open or short between terminal 30 of PCM and terminal 1 of DM-TL.
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