AUTOMATIC TRANSMISSION SYSTEM(for 1VD-FTV) Pattern Select Switch 2nd Start Mode Circuit

DESCRIPTION

When 2nd mode is selected with the ECT 2nd switch, the ECM controls the solenoid valves and the transmission starts from 2nd gear.

The 2nd mode is the system that operates the throttle motor to control engine output to reduce skidding of the driving wheels, and guarantee takeoff acceleration, driving straightness and turning stability.

When the shift lever is in D, the transmission automatically shifts up through 3rd to 6th as usual.

WIRING DIAGRAM

Refer to Pattern Select Switch Power Mode Circuit Click here.

CAUTION / NOTICE / HINT

When the ECT 2nd switch is pushed, switch contact is made and 2nd mode is selected. To cancel 2nd mode, push the ECT 2nd switch once again.

Tech Tips

2nd mode is automatically canceled when the ignition switch is turned off.

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 and perform the same check as above.

      When driving the vehicle with the ECT 2nd switch 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


    1. B001YZQE09
      Text in Illustration
      *a

      Component without harness connected

      (Integration Control and Panel Assembly)

      w/ Entry and Start System:

      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
      8 (2ND) - 5 (E) ECT 2nd switch on Below 1 Ω
      8 (2ND) - 5 (E) ECT 2nd switch off 10 kΩ or higher
    3. A01X8ZTE14
      Text in Illustration
      *a

      Component without harness connected

      (Suspension Control Switch)

      w/o Entry and Start System:

      Remove the suspension control switch Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      17 (2ND) - 20 (E) ECT 2nd switch on Below 1 Ω
      17 (2ND) - 20 (E) ECT 2nd switch off 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG (w/ Entry and Start System) B
      NG (w/o Entry and Start System) C

    B

    REPLACE INTEGRATION CONTROL AND PANEL ASSEMBLY Click here

    C

    REPLACE SUSPENSION CONTROL SWITCH Click here

    A

  3. CHECK HARNESS AND CONNECTOR (ECT 2ND SWITCH - BODY GROUND)


    1. A01X69FE02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Integration Control and Panel Assembly)

      w/ Entry and Start System:

      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
      V9-5 (E) - Body ground Always Below 1 Ω
    3. A01XB7UE01
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Suspension Control Switch)

      w/o Entry and Start System:

      Disconnect the suspension control switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      V4-20 (E) - Body ground Always Below 1 Ω

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  4. CHECK HARNESS AND CONNECTOR (ECT 2ND SWITCH - ECM)


    1. A01X2IIE01
      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
      A38-17 (SNWI) - Body ground ECT 2nd switch on Below 1 Ω
      A38-17 (SNWI) - Body ground ECT 2nd switch off 10 kΩ or higher
      for RHD
      Tester Connection Switch Condition Specified Condition
      A52-17 (SNWI) - Body ground ECT 2nd switch on Below 1 Ω
      A52-17 (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