STOP AND START SYSTEM(for 3ZR-FAE) Neutral Position Switch Circuit

DTC Code DTC Name
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. (for Manual Transaxle)

The engine stop and start ECU uses the park/neutral position switch assembly installed to the continuously variable transaxle assembly to detect when the shift lever is in P or N. (for CVT)

WIRING DIAGRAM

  1. for CVT:

    A348495E09

  2. for Manual Transaxle:

    A348170E14

PROCEDURE

  1. CONFIRM MODEL

    1. Choose the model to be inspected.

    Result

    Result

    Proceed to

    for CVT

    A

    for Manual Transaxle

    B
    B

    READ VALUE USING GTS (NEUTRAL SWITCH)Click here

    A

  2. 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.

    5. In accordance with the display on the GTS, read the Data List.

      Powertrain > Stop and Start > Data List

      Tester Display

      Neutral Switch

      OK

      Tester Display

      Condition

      Normal Condition

      Neutral Switch

      Shift lever in P or N

      ON

      Shift lever not in P or N

      OFF

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

  3. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    1. Inspect the park/neutral position switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY

    Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (ENGINE STOP AND START ECU - PARK/NEUTRAL POSITION SWITCH ASSEMBLY)

    1. Disconnect the A66 engine stop and start ECU connector.

    2. Disconnect the B36 park/neutral position switch assembly connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A66-21 (STA) - B36-9 (L)

      Always

      Below 1 Ω

      A66-17 (CLL) - B36-4 (B)

      Always

      Below 1 Ω

      A66-21 (STA) - Body ground

      Always

      80 to 180 Ω

      A66-17 (CLL) - Body ground

      Always

      10 kΩ or higher

      B36-9 (L) - Body ground

      Always

      80 to 180 Ω

      B36-4 (B) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    OK

    REPLACE ENGINE STOP AND START ECU

    Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. 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

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

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

    1. Disconnect the A36 engine stop and start ECU connector.

    2. Disconnect the B104 neutral position switch connector.

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      A36-4 (NPS) - B104-2 (TMN)

      Always

      Below 1 Ω

      B104-1 (TME) - Body ground

      Always

      Below 1 Ω

      A36-4 (NPS) - Body ground

      Always

      10 kΩ or higher

      B104-2 (TMN) - Body ground

      Always

      10 kΩ or higher

    Result

    Proceed to

    OK

    NG
    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

  7. INSPECT NEUTRAL POSITION SWITCH ASSEMBLY

    1. Inspect the neutral position switch assembly.

      Click here

    Result

    Proceed to

    OK

    NG
    OK

    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE

    Click here

    NG

    REPLACE NEUTRAL POSITION SWITCH ASSEMBLY

    Click here