AUTOMATIC TRANSMISSION SYSTEM, Diagnostic DTC:P0717/67

DTC Code DTC Name
P0717/67 Input Speed Sensor Circuit No Signal

DESCRIPTION

A01J47KE03

The speed sensor (NC0) detects the rotation speed of the O/D input shaft from the rotation speed of the O/D direct clutch drum. Its construction is the same as that of the speed sensor (SP2).

By comparing the speed sensor (NC0) signal with the speed sensor (SP2) signal, the ECM detects the shift timing of the gears and controls the engine torque and hydraulic pressure according to various conditions. As a result, the gears shift smoothly.

DTC No. DTC Detection Condition Trouble Area
P0717/67

  • All conditions below are detected for 5 sec. or more

    (2 trip detection logic):


    1. Gear changes not being performed

    2. Gear position: 1st, 2nd or 3rd

    3. Transmission input shaft rpm: less than 300 rpm

    4. Transmission output shaft rpm: 500 rpm or more

    5. Park/neutral position switch: OFF

    6. Shift solenoid valve S1, S2, SL and No. 1 vehicle speed sensor are operating normally

  • Open or short in speed sensor (NC0) circuit

  • Speed sensor (NC0)

  • ECM

MONITOR DESCRIPTION

The input speed sensor (NC0) detects the transmission input shaft speed. The ECM determines the gear shift timing based on a comparison of the input speed sensor (NC0) (input shaft speed) with the output speed sensor (output shaft speed).

When the output shaft speed is higher than the expected value and the input shaft speed is 300 rpm or less while the vehicle is running with the shift lever on D, the ECM will conclude that there is a malfunction in the input speed sensor (NC0). The ECM will illuminate the MIL and set the DTC.

WIRING DIAGRAM

A01J590E10

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK SPEED SENSOR (NC0) (INSTALLATION)


    1. A01J5GME02

      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 (NC0)


    1. A01J4G1E07

      Disconnect the T7 sensor connector from the transmission.

    2. Measure the resistance of the sensor.

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

      Tech Tips

      Reference: Inspect using an oscilloscope.

      A01J6BYE01

      Check the waveform of the ECM connector.

      OK
      Refer to illustration
      Item Content
      Tester Connection E10-34 (NC0+) - E10-26 (NC0-)
      Tool Setting 5 V/DIV, 0.5 msec./DIV.
      Condition Engine is idling

    NG

    REPLACE SPEED SENSOR

    OK

  3. CHECK WIRE HARNESS (SPEED SENSOR (NC0) - ECM)


    1. A01J4OSE25

      Disconnect the E10 ECM connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      E10-34 (NC0+) - E10-26 (NC0-) 20°C (68°F) 560 to 680 Ω
      E10-34 (NC0+) - Body ground 20°C (68°F) 10 kΩ or higher
      E10-26 (NC0-) - Body ground 20°C (68°F) 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS AND CONNECTOR

    OK

    REPLACE ECM