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Home >> Kia >> 2009 >> Optima EX, 2.4 8 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Troubleshooting >> DTC P0891: TCM Power Relay Circuit High >> Scan Tool Diagnostics >> Monitor Scan Tool Data
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Monitor Scan Tool Data

  1. Connect scan tool to data link connector (DLC)
  2. Ignition "ON" & Engine "OFF".
  3. Monitor the "A/T CON. RELAY VOLT" parameter on the scan tool

    Specification:  Approx. B+

    Fig 1: Scan Tool Display - ATM Control Relay Voltage (12.6)
    G06416985Courtesy of KIA MOTORS AMERICA, INC.
    Fig 2: Scan Tool Display - ATM Control Relay Voltage (14.0)
    G06416986Courtesy of KIA MOTORS AMERICA, INC.
  4. Is A/T RELAY VOLT within specifications?

    YES 

    • Fault is intermittent caused by poor contact in the sensor's and/or TCM (PCM) connector or was repaired and TCM (PCM) memory was not cleared. Thoroughly check connectors for looseness, poor connection, bending, corrosion, contamination, deterioration or damage. Repair or replace as necessary and go to "VERIFICATION OF VEHICLE REPAIR " procedure.

    NO