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

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DTC Code DTC Name
  Park / Neutral Position Switch Circuit
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DESCRIPTION

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

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WIRING DIAGRAM

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INSPECTION PROCEDURE

Note:

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

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PROCEDURE


  1. Click here

    INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY


    1. A01ITM5E27

      Remove the park/neutral position switch assembly (Click here).

    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

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


    1. A01IOI1E21

      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
      Table 1. Text in Illustration
      *a

      Front view of wire harness connector

      (to Park/Neutral Position Switch Assembly)

  3. Click here

    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

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    PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLEClick here

  5. Click here

    REPLACE PARK/NEUTRAL POSITION SWITCH ASSEMBLYClick here

  6. Click here

    REPAIR OR REPLACE HARNESS OR CONNECTOR