The value of the input shaft speed should be equal to the value of the output shaft speed, when multiplied by the 2nd gear ratio, while the transaxle is engaged in the 2nd gear. For example, if the output speed is 1000 rpm and the 2nd gear ratio is 2.308, then the input speed is 2308 rpm.
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 2nd gear ratio, while the transaxle is engaged in 2nd gear. This malfunction is mainly caused by mechanical troubles such as control valve sticking or solenoid valve malfuctioning rather than an electrical issue.
Item | Detecting Condition | Possible Cause | |
Case 1 | DTC Strategy |
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Rationality-high |
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Faulty Input Speed Sensor
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Faulty Output Speed Sensor
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Faulty internal parts in transmission |
Threshold Value |
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Proportionality check between input speed and Output speed at 2st gear Input speed > (Output speed *2st Gear Ratio)+200RPM | ||
Case 2 | DTC Strategy |
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Rationality-low | |
Threshold Value |
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Proportionality check between input speed and Output speed at 2st gear Input speed < (Output speed *2st Gear Ratio)-200RPM | ||
Enable Conditions |
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IThe time after the last shift was finished > 1 sec
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Oil temperature > -10℃
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Engine speed > 600RPM
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Position Lever D, B
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Input speed > 300 RPM
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Output speed(NAB) >300RPM & < 6000RPM
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Throttle opening > 15%(Too Low Only)
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Pre-Filtering 1 sec | ||
Diagnostic Time |
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More than 1sec | ||
Fail Safe |
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4th gear Limp-Home mode. | ||
Fig 1) 2st gear in D range
