STOP AND START SYSTEM Neutral Position Switch Circuit

DESCRIPTION

The neutral position switch detects whether the shift lever is in neutral. While the neutral position switch is off, engine restart operation due to Stop and Start system control is prohibited.

WIRING DIAGRAM

A005KKPE01
*a NEUTRAL POSITION SWITCH
*b ENGINE STOP AND START ECU

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (NEUTRAL SWITCH)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the tester on.

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

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

      OK
      ON is displayed when the shift lever is in neutral.
      OFF is displayed when the shift lever is in any other position.

    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 B70 neutral position switch connector and the A53 engine stop and start ECU connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      A53-28 (TMVC) - B70-1 (W1) Always Below 1 Ω
      A53-29 (TMN) - B70-2 (TMN) Always Below 1 Ω
      A53-30 (TME2) - B70-3 (F+) Always Below 1 Ω
      A53-28 (TMVC) or B70-1 (W1) - Body ground Always 10 kΩ or higher
      A53-29 (TMN) or B70-2 (TMN) - Body ground Always 10 kΩ or higher
      A53-30 (TME2) or B70-3 (F+) - Body ground Always 10 kΩ or higher

    3. Reconnect the B70 neutral position switch connector and the A53 engine stop and start ECU connector.


    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  3. CHECK NEUTRAL POSITION SWITCH (TMN TERMINAL VOLTAGE)


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

      A005LCME01
      Text In Illustration
      *a

      Component with harness connected

      (Engine Stop and Start ECU)

      		 - -
      Standard Voltage
      Tester Connection Condition Specified Condition
      A53-29 (TMN) - A53-30 (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 1.9V

    OK

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

    NG

    REPLACE NEUTRAL POSITION SWITCH Click here