AUTOMATIC TRANSMISSION SYSTEM (for 1KD-FTV), Diagnostic DTC:P0722

DTC Code DTC Name
P0722 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. An AC voltage is generated in the speed sensor SP2 coil as the parking gear mounted on the rear planetary gear assembly rotates, and this voltage is sent to the TCM. The parking gear on the rear planetary gear is used as the timing rotor for this sensor.

The gear shift point and lock-up timing are controlled by the TCM based on the signals from this vehicle speed sensor and the throttle position sensor signal.

DTC Code DTC Detection Condition Trouble Area
P0722

All the conditions below are detected 500 times or more continuously (2 trip detection logic).

(a) No signal from the speed sensor SP2 is input to the TCM while 4 pulses of the No. 1 vehicle speed sensor signal are sent.

(b) The vehicle speed is 9 km/h (6 mph) or more for at least 5 sec.

(c) The park/neutral position switch is OFF.

(d) The transfer position is not in neutral.


  • Open or short in speed sensor (SP2) circuit

  • Speed sensor (SP2)

  • TCM

MONITOR DESCRIPTION

The output 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 output speed sensor SP2 and throttle position sensor.

If the TCM detects no signal from the output speed sensor SP2 even while the vehicle is moving, it will conclude that there is a malfunction of the output speed sensor SP2. The TCM will illuminate the MIL and store a DTC.

WIRING DIAGRAM

A01E1PZE44

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK SPEED SENSOR (INSTALLATION)


    1. A01DXYRE02

      Check the speed sensor installation.

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

    NG
    OK
  2. INSPECT SPEED SENSOR (SP2)


    1. A01DYJ3E14

      Disconnect the T7 speed sensor connector.

    2. Measure the resistance according to the value(s) in the table below.

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

    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (SPEED SENSOR (SP2) - TCM)


    1. A01E2RLE23

      Disconnect the T19 TCM connector.

    2. Measure the resistance according to the value(s) in the table below.

      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 20°C (68°F) 10 kΩ or higher
      T19-29 (SP2-) - Body ground 20°C (68°F) 10 kΩ or higher

    NG
    OK