STOP AND START SYSTEM Neutral Position Switch Circuit

DESCRIPTION

The neutral position switch detects whether the shift lever is in neutral. When the shift lever in any position other than neutral, stop and start control is prohibited.

WIRING DIAGRAM

Refer to DTC P1780.

Click here

PROCEDURE


  1. READ VALUE USING GTS (NEUTRAL SWITCH)


    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Powertrain / Stop and Start / Data List / Neutral Switch.


      Powertrain > Stop and Start > Data List
      Tester Display
      Neutral Switch

    5. Read the value when the shift lever is in neutral and any other position

      OK
      Tester Display Condition Normal Condition
      Neutral Switch Shift lever is in neutral ON
      Shift lever is in any position other than neutral OFF
      Result
      Proceed to
      NG
      OK

    OK

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

    NG

  2. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - NEUTRAL POSITION SWITCH)


    1. Disconnect the A62 engine stop and start ECU connector.

    2. Disconnect the C61 neutral position switch connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A62-26 (TMVC) - C61-1 (W1) Always Below 1 Ω
      A62-25 (TME2) - C61-3 (F+) Always Below 1 Ω
      A62-8 (TMN) - C61-2 (TMN) Always Below 1 Ω
      A62-26 (TMVC) - Body ground and other terminals Always 10 kΩ or higher
      A62-25 (TME2) - Body ground and other terminals Always 10 kΩ or higher
      A62-8 (TMN) - Body ground and other terminals Always 10 kΩ or higher
      C61-1 (W1) - Body ground and other terminals Always 10 kΩ or higher
      C61-3 (F+) - Body ground and other terminals Always 10 kΩ or higher
      C61-2 (TMN) - Body ground and other terminals Always 10 kΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK ENGINE STOP AND START ECU (TMN TERMINAL VOLTAGE)


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

      A001T0SC10
      *a

      Component with harness connected

      (Engine Stop and Start ECU)

      		 - -
      Standard Voltage
      Tester Connection Condition Specified Condition
      A62-8 (TMN) - A62-25 (TME2) Ignition switch ON, shift lever in neutral 2.7 to 4.3 V
      Ignition switch ON, shift lever in any position other than neutral 0.7 to 1.9 V
      Result
      Result
      OK
      NG

    OK

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

    NG

    REPLACE NEUTRAL POSITION SWITCH Click here