Dtc P0722/61 Output Speed Sensor Circuit No Signal


DESCRIPTION

MONITOR DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK SPEED SENSOR (INSTALLATION)

INSPECT SPEED SENSOR (SP2)

CHECK WIRE HARNESS (SPEED SENSOR (SP2) - TCM)

DTC P0722/61 Output Speed Sensor Circuit No Signal


DESCRIPTION

The speed sensor (SP2) detects the rotation speed of the transmission output shaft and sends signals to the TCM. The TCM determines the vehicle speed based on these signals.
AC voltage is generated in the speed sensor (SP2) coil as the rotor mounted on the output shaft rotates, and this voltage is sent to the TCM.
The gear shift point and lock-up timing are controlled by the TCM based on the signals from the output speed sensor and throttle position sensor.

DTC Code
DTC Detection Condition
Trouble Area
P0722/61
  1. All conditions below are detected 500 times or more continuously (2 trip detection logic):
    1. No signal from speed sensor (SP2) is input to TCM while 4 pulses of No. 1 vehicle speed sensor signal are sent
    2. Vehicle speed is 9 km/h (5.6 mph) or more for at least 4 sec.
    3. Park/neutral position switch is off
  1. Open or short in speed sensor (SP2) circuit
  2. Speed sensor (SP2)
  3. TCM

MONITOR DESCRIPTION

The speed sensor (SP2) monitors the output shaft speed. The TCM controls the gear shift point and the lock-up timing based on the signals from the speed sensor (SP2) and throttle position sensor.
If the TCM detects no signal from the speed sensor (SP2) even while the vehicle is moving, the TCM will conclude that the speed sensor (SP2) is malfunctioning. The TCM will illuminate the MIL and set the DTC.

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340E Automatic Transmission.Automatic Transmission System. Dtc P0722/61 Output Speed Sensor Circuit No Signal


INSPECTION PROCEDURE

1.CHECK SPEED SENSOR (INSTALLATION)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340E Automatic Transmission.Automatic Transmission System. Dtc P0722/61 Output Speed Sensor Circuit No Signal

  1. Check the speed sensor installation.

    OK:
    Installation bolt is tightened properly and there is no clearance between sensor and transmission case.


NG
SECURELY INSTALL SPEED SENSOR OR REPLACE SPEED SENSOR
OK


2.INSPECT SPEED SENSOR (SP2)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340E Automatic Transmission.Automatic Transmission System. Dtc P0722/61 Output Speed Sensor Circuit No Signal

  1. Disconnect the T8 sensor connector from the transmission.



  1. Measure the resistance of the sensor.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    1 - 2
    		20°C (68°F)
    		560 to 680 Ω

    HINT:
    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340E Automatic Transmission.Automatic Transmission System. Dtc P0722/61 Output Speed Sensor Circuit No Signal
    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340E Automatic Transmission.Automatic Transmission System. Dtc P0722/61 Output Speed Sensor Circuit No Signal
    Reference: Inspect using an oscilloscope.
    Check the waveform of the TCM connector.
    OK:
    Refer to illustration
    Item
    		Content
    Tester Connection
    		T19-30 (SP2+) - T19-29 (SP2-)
    Tool Setting
    		2 V/DIV., 2 msec./DIV.
    Condition
    		Vehicle speed 20 km/h (12 mph)


NG
REPLACE SPEED SENSOR (SP2)
OK


3.CHECK WIRE HARNESS (SPEED SENSOR (SP2) - TCM)


    Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.A340E Automatic Transmission.Automatic Transmission System. Dtc P0722/61 Output Speed Sensor Circuit No Signal

  1. Disconnect the T19 TCM connector.

  1. Measure the resistance of the wire harness side connector.

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    T19-30 (SP2+) - T19-29 (SP2-)
    		20°C (68°F)
    		560 to 680 Ω
    T19-30 (SP2+) - Body ground
    		Always
    		10 kΩ or higher
    T19-29 (SP2-) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

REPLACE TCM