MULTI-MODE MANUAL TRANSAXLE SYSTEM, Diagnostic DTC:P0910

DTC Code DTC Name
P0910 Gate Select Actuator Circuit

DESCRIPTION

The shift and select actuator is operated by the transmission control ECU and changes the transaxle gear by moving the shift and select lever shaft. An electric motor (select motor) moves the shift and select lever shaft in the select direction, and the select stroke sensor, which is mounted on the shift and select actuator assembly, detects the select position. The transmission control ECU monitors the electrical current and select motor output terminal voltage, and detects malfunctions in the select motor circuit.

A0138BCE01
Text in Illustration
*a Shift and Select Actuator Operation
*b Shift Direction
*c Select Direction
DTC No. DTC Detection Condition Trouble Area
P0910

The transmission control ECU detects the following conditions:

(1-trip detection logic)


  1. Select motor is not energized.

  2. Select motor voltage is less than 0.5 V*1, or more than threshold*1 for 0.5 seconds.

  3. +BM voltage is 10 V or more.

  • Shift and select actuator assembly (select motor)

  • Wire harness or connector

  • Transmission control ECU

The transmission control ECU detects the following conditions:

(1-trip detection logic)


  1. Select motor is energized.

  2. Target select motor current is more than 5A.

  3. Actual select motor current is less than 1A*3.

The transmission control ECU detects the following conditions:

(1-trip detection logic)


  1. Select motor is not energized.

  2. Difference between maximum and minimum voltages of select motor terminal (MSL+ or MSL-) is more than threshold*4 for 0.5 seconds.

  3. +BM voltage is 10 V or more.

WIRING DIAGRAM

A0136QJE01

INSPECTION PROCEDURE

Note

In select stroke sensor or shift and select actuator assembly replacement, perform the [Initialization and Learning] procedure Click here and [Synchronization Position Calibration] procedure Click here after installing the sensor or actuator assembly. If the sensor or actuator is installed without performing [Initialization and Learning] and [Synchronization Position Calibration], it may cause driving performance degradation or system component breakage.

PROCEDURE


  1. INSPECT TRANSMISSION CONTROL ECU (MSL TERMINAL VOLTAGE)


    1. Turn the ignition switch to ON.

    2. A0137QSE14
      Text in Illustration
      *a

      Component with harness connected

      (Transmission Control ECU)

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      A50-1 (MSL+) - Body ground Ignition switch ON 4.0 to 7.0 V
      A50-2 (MSL-) - Body ground Ignition switch ON 4.0 to 7.0 V

    3. Turn the ignition switch off.


    NG

    Click here

    OK

    CHECK INTERMITTENT PROBLEMS Click here

  2. CHECK TERMINAL CONDITION (TRANSMISSION CONTROL ECU)


    1. Disconnect the A50 transmission control ECU connector.

    2. Check the connections of the transmission control ECU connector.

      OK
      The transmission control ECU and wire harness connectors and connector terminals are connected securely and are not bent, rusted, or damaged.

    NG

    CONNECT CORRECTLY

    OK

  3. INSPECT SELECT MOTOR CIRCUIT


    1. A0137KIE03
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Transmission Control ECU)

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A50-1 (MSL+) - A50-2 (MSL-) Always 0.1 to 100 Ω
      A50-1 (MSL+) - Body ground Always 10 kΩ or higher
      A50-2 (MSL-) - Body ground Always 10 kΩ or higher

    NG

    Click here

    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

  6. CHECK TERMINAL CONDITION (SELECT MOTOR)


    1. Disconnect the B29 select motor connector.

    2. Check the connections of the select motor connector.

      OK
      The select motor and wire harness connectors and connector terminals are connected securely and are not bent, rusted, or damaged.

    NG

    CONNECT CORRECTLY

    OK

  7. CHECK HARNESS AND CONNECTOR (TRANSMISSION CONTROL ECU - SELECT MOTOR)


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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      A50-1 (MSL+) - B29-2 Always Below 1 Ω
      A50-1 (MSL-) - B29-1 Always Below 1 Ω
      A50-1 (MSL+) or B29-2 - Body ground Always 10 kΩ or higher
      A50-2 (MSL-) or B29-1 - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  8. INSPECT SHIFT AND SELECT ACTUATOR ASSEMBLY (SELECT MOTOR)


    1. Disconnect the B29 select motor connector.

    2. A0138W9E02
      Text in Illustration
      *a

      Component without harness connected

      (Shift and Select Actuator Assembly (Select Motor))

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 - 2 Always 0.1 to 100 Ω
      1 - Body ground Always 10 kΩ or higher
      2 - Body ground Always 10 kΩ or higher

    NG

    Click here

    OK

    CHECK INTERMITTENT PROBLEMS Click here

  9. REPLACE SHIFT AND SELECT ACTUATOR ASSEMBLY


    1. Replace the shift and select actuator assembly Click here.


    NEXT

  10. PERFORM INITIALIZATION


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


    NEXT

    END