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

10. 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.

11. *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

12. *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

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

26. 6. TCU Circuit diagram