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

DESCRIPTION

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

WIRING DIAGRAM

A01IPARE12

INSPECTION PROCEDURE

Note

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

PROCEDURE


  1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. A01ITM5E27

      Remove the park/neutral position switch assembly.


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

      Standard Resistance
      Tester Connection Condition Specified Condition
      3 (PL) - 1 (RB) Shift lever in P Below 1 Ω
      2 (RL) - 1 (RB) Shift lever in R Below 1 Ω
      3 (PL) - 1 (RB) Shift lever not in P 10 kΩ or higher
      2 (RL) - 1 (RB) Shift lever not in R 10 kΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for U660E) B
      NG (for K311) C

    B

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    C

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLY Click here

    A

  2. CHECK HARNESS AND CONNECTOR (PARK/NEUTRAL POSITION SWITCH - BATTERY)


    1. A01IOI1E21
      Text in Illustration
      *a

      Front view of wire harness connector

      (to Park/Neutral Position Switch Assembly)

      Disconnect the C23 park/neutral position switch assembly connector.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      C23-1 (RB) - Body ground Ignition switch ON 11 to 14 V
      C23-1 (RB) - Body ground Ignition switch off Below 1 V

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

    OK

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


    1. Disconnect the H95 clearance warning ECU connector.

    2. Disconnect the C23 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
      H95-7 (PL) - C23-3 (PL) Always Below 1 Ω
      H95-23 (RL) - C23-2 (RL) Always Below 1 Ω
      H95-7 (PL) - Body ground Always 10 kΩ or higher
      H95-23 (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