AUTOMATIC TRANSMISSION SYSTEM (for 1VD-FTV) L4 Position Switch Circuit

DESCRIPTION

The four wheel drive control ECU judges whether the transfer is in the L4 position based on the information from the limit switch inside the transfer shift actuator assembly which is detected by the ECM. The four wheel drive control ECU then inputs a signal to the combination meter assembly via CAN communication and turns on the 4LO indicator.

WIRING DIAGRAM

Refer to DTC P2772 Click here.

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK HARNESS AND CONNECTOR (FOUR WHEEL DRIVE CONTROL ECU - BODY GROUND)


    1. A015A8ME12

      Disconnect the four wheel drive control ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A27-21 (L4) - Body ground Always 10 kΩ or higher

    NG

    CHECK HARNESS AND CONNECTOR (FOUR WHEEL DRIVE CONTROL ECU - ECM) Click here

    OK

    GO TO TRANSFER SYSTEM INSPECTION Click here

  2. CHECK HARNESS AND CONNECTOR (FOUR WHEEL DRIVE CONTROL ECU - ECM)


    1. A0158QYE17

      Disconnect the ECM connector.

    2. Disconnect the four wheel drive control ECU connector.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      A38-21 (L4) - Body ground Always 10 kΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      A52-21 (L4) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

    REPLACE ECM Click here