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Published byDerek Hodges Modified over 9 years ago
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A/T Technical Training for SORENTO Subject : OBD-II Fault handling
KIA MOTORS
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4. TCU Block diagram & Terminal assignment
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5. Fault handling 5-1. DTC List
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※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)
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5-5. DTC detection, decision condition & Fail safe
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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.
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*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
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*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
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Emergency mode ; fixed at 4th gear, Lock up off and Line pressure is max
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6. TCU Circuit diagram
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