TOYOTA PARKING ASSIST-SENSOR SYSTEM Park / Neutral Position Switch Circuit

DESCRIPTION

This circuit sends the park/neutral position switch assembly signals to the rear clearance warning ECU assembly.

WIRING DIAGRAM

A01J4PWE13

INSPECTION PROCEDURE

PROCEDURE


  1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. A01J7MCE27

      Disconnect the N1 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 (RL) - 2 (RB) Shift lever on R Below 1 Ω
      1 (RL) - 2 (RB) Shift lever not on R 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG (A343F) B
      NG (A750F) C
      NG (A343E) D

    B

    REPLACE PARK / NEUTRAL POSITION SWITCH Click here

    C

    REPLACE PARK / NEUTRAL POSITION SWITCH Click here

    D

    REPLACE PARK / NEUTRAL POSITION SWITCH Click here

    A

  2. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH ASSEMBLY - REAR CLEARANCE WARNING ECU ASSEMBLY)


    1. A01J3X0E04

      Disconnect the N1 park/neutral position switch assembly connector.

    2. A01J5BQE73

      Disconnect the C25 rear clearance warning ECU assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      N1-2 (RB) - Body ground Ignition switch ON 11 to 14 V
      N1-2 (RB) - Body ground Ignition switch off Below 1 V

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N1-1 (RL) - C25-13 (RL) Always Below 1 Ω
      N1-1 (RL) - Body ground Always 10 kΩ or higher

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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