MULTI-MODE MANUAL TRANSAXLE SYSTEM, Diagnostic DTC:P0715

DTC Code DTC Name
P0715 Input / Turbine Speed Sensor Circuit Malfunction

DESCRIPTION

The transmission revolution sensor is mounted on the transaxle. The transmission control ECU calculates the transaxle input shaft speed using the sensor. When the input shaft rotates, the sensor generates a pulse signal and sends the signal to the transmission control ECU. The ECU calculates the input shaft speed based on the signal. If the input shaft speed falls below a threshold despite the vehicle running, the ECU interprets this as a malfunction in the transmission revolution sensor circuit. The ECU sets the DTC and illuminates the multi-mode manual transaxle warning light.

DTC No. DTC Detection Condition Trouble Area
P0715

The transmission control ECU detects the following conditions simultaneously:

(1-trip detection logic)


  1. Vehicle speed is 28 km/h (17.4 mph) or more.

  2. Transmission revolution speed is 175 rpm or less for 4 seconds.

  • Wire harness or connector

  • Transmission revolution sensor

  • Transmission control ECU

WIRING DIAGRAM

A0135TIE01

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT SENSOR INSTALLATION (TRANSMISSION REVOLUTION SENSOR)


    1. A0138JDE04
      Text in Illustration
      *a Normal
      *b Abnormal
      *c Clearance

      Check the transmission revolution sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY INSTALL OR REPLACE SENSOR

    OK

  2. INSPECT TRANSMISSION REVOLUTION SENSOR


    1. A0136IRE01
      Text in Illustration
      *a

      Component without harness connected

      (Transmission revolution sensor)

      Disconnect the B31 transmission revolution sensor connector.

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

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

    NG

    REPLACE TRANSMISSION REVOLUTION SENSOR Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (TRANSMISSION REVOLUTION SENSOR - TRANSMISSION CONTROL ECU)


    1. Reconnect the B31 transmission revolution sensor connector.

    2. Disconnect the A28 transmission control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A28-15 (NIP-) - A28-16 (NIP+) 20°C (68°F) 560 to 680 Ω
      A28-15 (NIP-) - Body ground Always 10 kΩ or higher
      A28-16 (NIP+) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. REPLACE TRANSMISSION CONTROL ECU


    1. Replace the transmission control ECU Click here.


    NEXT

  5. PERFORM INITIALIZATION


    1. Perform the initialization and learning for multi-mode manual transaxle system Click here.


    NEXT

    END