The OUTPUT SPEED SENSOR outputs waveform signals according to the revolutions of the output shaft of the transmission. The Output Speed Sensor is installed in front of the Parking Gear to determine the Parking Gear rpms by counting the frequency of the pulses. This value, together with the throttle position data, is mainly used to decide the optimum gear position.
The TCM sets this code if the calculated value of the signals is noticeably different from the value calculated, using the Vehicle Speed Sensor output, when the vehicle is running faster than 18.6MPH(30km/h). The TCM will initiate the fail safe function if this code is detected.
Item | Detecting Condition | Possible Cause | |
Case 1 | DTC Strategy |
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Rationality(Too high) |
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Open or shrot in signal circuit
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Open in power circuit
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Open in ground circuit
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Faulty Output speed sensor
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Faulty TCM |
Enable Conditions |
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Battery Voltage > 10V | ||
Threshold Value |
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Output speed (NAB) Output speed >= 6000RPM | ||
Case 2 | DTC Strategy |
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Rationality | |
Enable Conditions(1) |
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Battery Voltage > 10V
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Position Lever D, B, L
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State of the brake Off
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Vehicle Speed > 25km/h
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Throttle opening > 15%
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Engine speed > 3000RPM
•
Pre-Filtering 1 sec | ||
Threshold Value(1) |
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Output speed (NAB) Output speed = 0 & Current gear = 1, L, B | ||
Enable Conditions(2) |
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Battery Voltage > 10V
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Position Lever D, B
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State of the brake Off
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Input speed > 1800RPM
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Engine speed > 3000RPM
•
Pre-Filtering 1 sec | ||
Threshold Value(2) |
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Output speed (NAB) Output speed = 0 & Current gear = 2 | ||
Enable Conditions(3) |
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Battery Voltage > 10V
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Position Lever D
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State of the brake Off
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Input speed > 1200RPM
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Engine speed > 3000RPM
•
Pre-Filtering 1 sec | ||
Threshold Value(3) |
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Output speed (NAB) Output speed = 0 & Current gear = 3 | ||
Item | Detecting Condition | Possible Cause | |
Case 2 | Enable Conditions(4) |
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Battery Voltage > 10V
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Position Lever D
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State of the brake Off
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Input speed > 700RPM
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Engine speed > 3000RPM
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Pre-Filtering 1 sec |
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Open or shrot in signal circuit
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Open in power circuit
•
Open in ground circuit
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Faulty Output speed sensor
•
Faulty TCM |
Threshold Value(4) |
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Output speed (NAB) Output speed = 0 & Current gear = 4 | ||
Enable Conditions(5) |
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Battery Voltage > 10V
•
Position Lever D
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State of the brake Off
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Input speed > 800RPM
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Engine speed > 3000RPM
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Pre-Filtering 1 sec | ||
Threshold Value(5) |
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Output speed (NAB) Output speed = 0 & Current gear = 5 | ||
Enable Conditions(6) |
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Battery Voltage > 10V
•
Position Lever D, B, L
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Output speed before dropping > 1200RPM
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Input speed > 1000RPM
•
Pre-Filtering 1 sec | ||
Threshold Value(6) |
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Output speed gradient (nabg) Output speed gradient (during 20msec) > 600RPM | ||
Diagnostic Time |
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More than 4.0 sec. | ||
Fail Safe |
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Output speed from vehicle speed
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Shift prevention over 4th gear
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Prevention of manual shift
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Prevention of pressure adaptation
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Damper clutch off | ||
Item | Condition | Specification | Spec. |
Output Speed Sensor |
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20km/h | Approx. 149[Hz] | Approx. 1.1K(Hz) |
Fig 1) Low Speed
Fig 2) High Speed
