DTC P0734 Gear 4 Incorrect Ratio: DTC Detecting Condition

DTC DETECTING CONDITION

Item	Detecting Condition & Fail Safe	Possible cause
DTC Strategy	4th gear incorrect ratio	Faulty Input speed sensor Faulty output speed sensor Faulty UD clutch or 2nd brake
Enable Conditions	Engine speed > 450 RPM Output speed > 900 RPM Shift stage 4th. gear Input speed > 0 RPM A/T oil temp sensor voltage 4.5V Voltage of Battery > 10V TRANSAXLE RANGE SWITCH is normal
Threshold value	\| Input speed/4th gear ratio - output speed \| ≥ 200 RPM/4th. gear ratio
Diagnostic Time	more than 1 SEC
Fail Safe	Locked into 3 rd gear. (If diagnosis code P0734 is output four times, the transaxle is locked into 3rd gear)