AUTOMATIC TRANSMISSION SYSTEM Pattern Select Switch 2nd Start Mode Circuit

DESCRIPTION

When 2nd start mode is selected with the ECT 2nd switch (integration control and panel assembly), the ECM controls the shift solenoid valves and the transmission starts from 2nd gear.

WIRING DIAGRAM

Refer to Pattern Select Switch Sport Mode Circuit Click here.

PROCEDURE


  1. DRIVING TEST

    Tech Tips

    The driving test should be performed on a paved road (nonskid road).


    1. Start the engine.

    2. Turn the ECT 2nd switch off (normal drive mode).

    3. Confirm vehicle response by driving from a parked position to fully depressing the accelerator pedal.

    4. Turn the ECT 2nd switch on (2nd start mode) and perform the same check as above.

      When driving the vehicle with the 2nd start mode on and off, check that there is a difference in acceleration.

      OK
      There is a difference in acceleration.

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

  2. INSPECT ECT 2ND SWITCH (INTEGRATION CONTROL AND PANEL ASSEMBLY)


    1. B0019C2E21
      Text in Illustration
      *a

      Component without harness connected

      (Integration Control and Panel Assembly)

      Remove the integration control and panel assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      19 (2ND) - 1 (E) ECT 2nd switch on Below 1 Ω
      19 (2ND) - 1 (E) ECT 2nd switch off 10 kΩ or higher

    NG

    REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY Click here

    OK

  3. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - BODY GROUND)


    1. B0019E6E04
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Integration Control and Panel Assembly)

      Disconnect the integration control and panel assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V12-1 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (INTEGRATION CONTROL AND PANEL ASSEMBLY - ECM)


    1. B001A5UE03
      Text in Illustration
      *A for LHD
      *B for RHD
      *a

      Front view of wire harness connector

      (to ECM)

      Disconnect the ECM connector.

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

      Standard Resistance
      for LHD
      Tester Connection Switch Condition Specified Condition
      A38-12 (SNWI) - Body ground ECT 2nd switch on Below 1 Ω
      A38-12 (SNWI) - Body ground ECT 2nd switch off 10 kΩ or higher
      for RHD
      Tester Connection Switch Condition Specified Condition
      A87-12 (SNWI) - Body ground ECT 2nd switch on Below 1 Ω
      A87-12 (SNWI) - Body ground ECT 2nd switch off 10 kΩ or higher

    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR