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P0722 AT Output Speed Sensor Circuit - Open or Short(GND)

AutoHex Online Help: Hyundai SANTAFE(CM) 2008
Component Location
General Description

The Output Speed Sensor outputs pulse-signals according to the revolutions of the output shaft of the transmission. The Output Speed Sensor is installed in front of the Transfer Drive Gear to determine the Transfer Drive 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.



DTC Description

The TCM sets this code if the calculated value of the pulse-signal is noticeably different from the value calculated, using the Vehicle Speed Sensor output, when the vehicle is running faster than 19 Mile/h(30 km/h). The TCM will initiate the fail safe function if this code is detected.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

? Check voltage range

? Signal circuit is open or short.

? Sensor power circuit is open

? Sensor ground circuit is open

? Faulty OUTPUT SPEED SENSOR

? Faulty PCM

Enable Conditions

? Vehicle speed is over 19 Mile/h(30 Km/h) in D,3,2,L(A/T range swhitch) and SP(SPORTS MODE)

? Eng revolution = 2600 rpm In 1st or 2nd gear

? A/T oil temp sensor voltage < 4.57 V

? Not FailSafe Status

Threshold Value

? If the output from the output speed sensor is continuously 50% lower than the value calculated by vehicle speed sensor.

Diagnostic Time

? More than 1sec

Fail Safe

? Locked into 3rd or 2nd gear.

? Apply an electric current to Solenoide valve

? Manual shifting is possibe(2nd ? 3rd, 3rd ? 2nd)

Specification

Input shaft & Output shaft speed sensor

? Type : Hall sensor

? Current consumption : 22mA(MAX)

? Sensor body and sensor connector have been unified as one.

Schematic Diagram
Signal Waveform