STOP AND START SYSTEM Park / Neutral Position Switch Circuit

DESCRIPTION

The engine stop and start ECU detects the neutral position through the park/neutral position switch assembly attached to the transaxle.

WIRING DIAGRAM

Refer to P1780 Click here.

CAUTION / NOTICE / HINT

Note

Inspect the fuses for circuits related to this system before performing the following inspection procedure.

PROCEDURE


  1. READ VALUE USING INTELLIGENT TESTER (NEUTRAL POSITION 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 / ECT / Data List.

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

      Tester Display Measurement Item / Range Normal Condition Diagnostic Note
      Neutral Position SW Signal

      PNP switch status /

      ON or OFF

      ON: Shift lever in P or N

      OFF: Shift lever not in P or N

      		 -
      Result
      Result Proceed to
      Data display is not within Normal Condition range A
      Data display is within Normal Condition range B

    B

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

    A

  2. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. A01VFNPE24
      Text In Illustration
      *a

      Component without harness connected

      (Park/Neutral Position Switch Assembly)

      Disconnect the B69 park/neutral position switch assembly connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition

      1 (RB) - 3 (PL)

      4 (B) - 9 (L)

      		 Shift lever in P Below 1 Ω
      1 (RB) - 2 (RL) Shift lever in R Below 1 Ω

      1 (RB) - 8 (NL)

      4 (B) - 9 (L)

      		 Shift lever in N Below 1 Ω
      1 (RB) - 7 (DL) Shift lever in D or M Below 1 Ω

      1 (RB) - 3 (PL)

      4 (B) - 9 (L)

      		 Shift lever not in P 10 kΩ or higher
      1 (RB) - 2 (RL) Shift lever not in R 10 kΩ or higher

      1 (RB) - 8 (NL)

      4 (B) - 9 (L)

      		 Shift lever not in N 10 kΩ or higher
      1 (RB) - 7 (DL) Shift lever not in D or M 10 kΩ or higher

    NG

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    OK

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


    1. Disconnect the A53 engine stop and start ECU connector.

    2. Disconnect the B69 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
      A53-4 (STA) - B69-9 (L) Always Below 1 Ω
      A53-6 (CLL) - B69-4 (B) Always Below 1 Ω
      A53-4 (STA) - Body ground Always 80 to 180 Ω
      A53-6 (CLL) - Body ground Always 10 kΩ or higher
      B69-9 (L) - Body ground Always 80 to 180 Ω
      B69-4 (B) - Body ground Always 10 kΩ or higher

    4. Reconnect the A53 engine stop and start ECU connector.

    5. Reconnect the B69 park/neutral position switch assembly connector.


    OK

    REPLACE ENGINE STOP AND START ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR