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 transmission. The transmission control ECU calculates the transmission 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 transmission warning light.

DTC No. DTC Detection Conditions Trouble Areas
P0715

The transmission control ECU detects the following conditions simultaneously:

(1 trip detection logic)


  1. Vehicle speed is 11 km/h (6.8 mph) or more

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

  • Open or short in transmission revolution sensor circuit

  • Transmission revolution sensor

  • Transmission control ECU

WIRING DIAGRAM

A0135TYE02

INSPECTION PROCEDURE

Tech Tips

When the DTC is set, check the transmission input revolution by selecting the following menu items on an intelligent tester: Powertrain / Multi-Mode M/T / Data List / Input Revolution.

Items

[Abbreviation]

 Measurement Items: Display Normal Conditions Diagnostic Notes

Input Revolution

[Input Rev.]

Transmission input revolution:

Min.: 0 rpm, Max.: 12,800 rpm

 0 rpm: Vehicle stationary When input revolution signal malfunctions, value calculated from vehicle speed signal displayed

PROCEDURE


  1. CHECK SENSOR INSTALLATION

    A0138JDE02

    1. Check the transmission revolution sensor installation.

      OK
      Sensor is installed correctly.

    NG

    SECURELY REINSTALL SENSOR

    OK

  2. INSPECT TRANSMISSION REVOLUTION SENSOR

    A0136IR

    1. Disconnect the transmission revolution sensor connector.

    2. Measure the resistance between the terminals of the transmission revolution sensor connector.

      Standard Resistance
      Tester Connections Specified Conditions
      1 - 2 560 to 680 Ω at 20°C (68°F)

    3. Reconnect the transmission revolution sensor connector.


    NG

    REPLACE TRANSMISSION REVOLUTION SENSOR

    OK

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

    A0136IKE04

    1. Disconnect the transmission control ECU connector.

    2. Measure the resistance between the terminals of the ECU connector.

      Standard Resistance
      Tester Connections Specified Conditions
      1 - 2 560 to 680 Ω at 20°C (68°F)

    3. Reconnect the transmission control ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE TRANSMISSION CONTROL ECU ASSEMBLY