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A/T Technical Training for SORENTO

This technical training covers OBD-II fault handling specifically for KIA Motors 4WD vehicles. It includes a comprehensive overview of TCU block diagrams, terminal assignments, and detailed fault handling procedures. The training focuses on diagnostic trouble codes (DTC) detection mechanisms, including patterns of DTC storage across driving cycles and fail-safe conditions. Key methods for diagnosing solenoid malfunctions and gear position detection are explored, ensuring effective troubleshooting. Participants will gain insights into TCU circuit diagrams and operational methodologies.

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A/T Technical Training for SORENTO

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  1. A/T Technical Training for SORENTO Subject : OBD-II Fault handling KIA MOTORS

  2. 4. TCU Block diagram & Terminal assignment

  3. 5. Fault handling 5-1. DTC List

  4. ※1 ; Only for 4WD vehicles, “-” ; not be supported Fault type ; A – DTC stored on the 1st driving cycle B – DTC stored on the 2nd driving cycle continuously C – Only Fail-safe (not DTC stored) MIL ; “○” -- supported(to be performed at the same time as DTC stored)

  5. 5-5. DTC detection, decision condition & Fail safe

  6. METHOD OF SOLENOID MALFUNCTION DETECTION ※Detection of Gear position … ※Ex) Detection of S1 STUCK ON failure : TCU detects 2nd gear ratio in case that TCU shifts to 3rd gear.

  7. *1 ; The prohibition time is started when shift changes. *2 ; It is necssary to get the failure detection in both gear position , due to failure decision. where, Vehicle speed(rpm) ; output shaft speed

  8. *1 ; The prohibition time is started when shift changes or L/Up is full engaged. *2 ; It is necssary to get the failure detection in both gear position , due to failure decision. where, Ne ; Engine speed Ni ; Turbine speed L/U ; Lock up Vehicle speed(rpm) ; Output shaft speed

  9. Emergency mode ; fixed at 4th gear, Lock up off and Line pressure is max

  10. 6. TCU Circuit diagram

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