Component Location
General Description

The value of the input shaft speed should be equal to the value of the output shaft speed, when multiplied by the 1st gear ratio, while the transaxle is engaged in the 1st gear. For example, if the output speed is 1000 rpm and the 1st gear ratio is 3.73, then the input speed is 3730 rpm.

DTC Description

This code is set if the value of input shaft speed is not equal to the value of the output shaft, when multiplied by the 1st gear ratio, while the transaxle is engaged in 1st gear. This malfunction is mainly caused by mechanical troubles such as control valve sticking or solenoid valve malfuctioning rather than an electrical issue.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

Case 1

DTC Strategy

Rationality-high

Faulty Input Speed Sensor

Faulty Output Speed Sensor

Faulty internal parts in transmission

Threshold Value

Proportionality check between input speed and Output speed at 1st gear Input speed > (Output speed *1st Gear Ratio)+200RPM

Case 2

DTC Strategy

Rationality-low

Threshold Value

Proportionality check between input speed and Output speed at 1st gear Input speed < (Output speed *1st Gear Ratio)-200RPM

Enable Conditions

IThe time after the last shift was finished > 1 sec

Oil temperature > -10℃

Engine speed > 600RPM

Position Lever D, B, L

Input speed > 300 RPM

Output speed(NAB) >150RPM & < 6000RPM

Throttle opening > 15%(Too Low Only)

Pre-Filtering 1 sec

Diagnostic Time

More than 1sec

Fail Safe

Locked as 4th gear

Signal Waveform & Data

Fig 1) 1st gear in D range

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