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Home >> Kia >> 2018 >> Soul Base, Standard Trans >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Anti-Theft Systems >> Smart Key Code Saving Diagnosis >> DTC P1676: Immobilizer-Smartra Message Error >> DTC Inspection >> Monitor KDS/GDS Data >> Check PCM Communication

Check PCM Communication

  1. Ignition "ON" & Engine "OFF"
  2. Connect KDS/GDS and setup the oscilloscope.
  3. Back probe and measure signal waveform of Pin No. 61 (EMS COM) terminal of PCM main harness connector and chassis ground by using VMI A channel. (AT)
  4. Back probe and measure signal waveform of Pin No. 83 (EMS COM) terminal of PCM main harness connector and chassis ground by using VMI A channel. (MT)

    Specification:  Refer to Figure below

    Fig 1: Screen Display - Communication Signal Waveform Between SMK Unit And ECM/PCM
    G12216660Courtesy of KIA MOTORS AMERICA, INC.
  5. Is the measured signal waveform normal?

    YES 

    • Fault is intermittent caused by poor contact in Smart Key unit and/or PCM's connector or was repaired and Smart Key unit and memory was not cleared. Thoroughly check 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.

    NO 

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