AUTOMATIC TRANSMISSION SYSTEM(for 2TR-FE) Pattern Select Switch 2nd Start Mode Circuit

DESCRIPTION

When 2nd start mode is selected with the pattern select (2ND) switch, the ECM controls the solenoid valves and the transmission starts from 2nd gear.

In 2nd start mode, the system operates the throttle motor to control engine output to reduce skidding of the drive wheels and guarantee stable acceleration from rest, straight driving and turning stability.

When the shift lever is in D, the transmission automatically shifts up from 2nd to 6th as usual.

Tech Tips


  • The pattern select (2ND) switch is a momentary-type switch.

  • In order to cancel 2nd start mode, push the pattern select (2ND) switch again or turn the ignition switch off.

WIRING DIAGRAM

B001D14E26

PROCEDURE


  1. INSPECT PATTERN SELECT (2ND) SWITCH ASSEMBLY


    1. B001EMXE14
      Text in Illustration
      *1 Pattern Select (2ND) Switch Assembly

      Remove the pattern select (2ND) switch assembly Click here.

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

      Standard Resistance
      Tester Connection Switch Condition Specified Condition
      1 (E) - 4 (2ND) Pattern select (2ND) switch pushed Below 1 Ω
      1 (E) - 4 (2ND) Pattern select (2ND) switch not pushed 10 kΩ or higher

    NG
    OK
  2. CHECK HARNESS AND CONNECTOR (PATTERN SELECT (2ND) SWITCH - BODY GROUND)


    1. B001H89E02
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Pattern Select (2ND) Switch Assembly)

      Disconnect the pattern select (2ND) switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      G159-1 (E) - Body ground Always Below 1 Ω

    NG
    OK
  3. CHECK HARNESS AND CONNECTOR (PATTERN SELECT (2ND) SWITCH - ECM)


    1. B001D83E02
      Text in Illustration
      *a

      Rear 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
      Tester Connection Switch Condition Specified Condition
      G180-23 (SNWI) - Body ground Pattern select (2ND) switch pushed Below 1 Ω
      G180-23 (SNWI) - Body ground Pattern select (2ND) switch not pushed 10 kΩ or higher

    OK
    NG