DTC P0734 Gear 4 Incorrect Ratio: DTC Detecting Condition

DTC DETECTING CONDITION

Item	Detecting Condition	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 > -23.5°C (-10.3°F) Voltage of Battery > 10V TRANSAXLE RANGE SWITCH is normal and after 2sec is passed from IG ON
Threshold value	\| Input speed/4th gear ratio - output speed \| ≥200 RPM
Diagnostic Time	More than 1sec
Fail Safe	Locked into 3rd gear. (If diagnosis code P0734 is output four times, the transaxle is locked into 3rd gear)