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Home >> Hyundai >> 2009 >> Elantra GLS, Automatic >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Servicing - Automatic Transmission >> Automatic Transaxle System >> DTC P0880 TCM Power Signal Error >> Power Supply Circuit Inspection

Power Supply Circuit Inspection

  1. Ignition "ON" & Engine "OFF".
  2. Disconnect the "PCM/TCM" connector.
  3. Measure voltage between terminal No"49" of TCM harness connector and chassis ground and then terminal No"50" of the TCM harness connector and chassis ground.

    Specification: approx. 12V

    Fig 1: Measuring Resistance Between TCM Connector Terminal 49 And 50
    G05364193Courtesy of HYUNDAI MOTOR CO.
  4. Is voltage within specifications?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or PCM/TCM's connector or was repaired and PCM/TCM memory was not cleared. And go to VERIFICATION OF VEHICLE REPAIR  procedure.

    NO 

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