Toyota Parking Assist-Sensor System Parking Brake Switch Circuit

Body Electrical. Camry. Acv40 Gsv40
Park Assist Monitoring. Camry. Acv40 Gsv40

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CONFIRM MODEL

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - PARKING BRAKE SWITCH ASSEMBLY)

INSPECT PARKING BRAKE SWITCH ASSEMBLY

CHECK HARNESS AND CONNECTOR

INSPECT PARKING BRAKE SWITCH ASSEMBLY

TOYOTA PARKING ASSIST-SENSOR SYSTEM - Parking Brake Switch Circuit


DESCRIPTION

The parking brake switch assembly turns on and off according to the operation of the parking brake lever (for M/T) or parking brake pedal (for A/T).
The clearance warning ECU stops detection operation when it receives an on signal from the parking brake switch.

WIRING DIAGRAM


Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Parking Brake Switch Circuit


INSPECTION PROCEDURE

1.CONFIRM MODEL

  1. Choose the model to be inspected.

    Result:
    Model
    		Proceed to
    for Foot Pedal Type
    		A
    for Lever Type
    		B


B
Go to step 4
A


2.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - PARKING BRAKE SWITCH ASSEMBLY)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Parking Brake Switch Circuit

  1. Disconnect the S17 connector from the clearance warning ECU.

  1. Disconnect the A18 connector from the parking brake switch assembly.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S17-2 (P1) - A18-1
    		Always
    		Below 1 Ω
    S17-2 (P1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.INSPECT PARKING BRAKE SWITCH ASSEMBLY


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Parking Brake Switch Circuit

  1. Remove the parking brake switch assembly.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    Switch connector (A) - Switch body (B)
    		ON (When shaft is not pressed)
    		Below 1 Ω
    Switch connector (A) - Switch body (B)
    		OFF (When shaft is pressed)
    		10 kΩ or higher


NG
REPLACE PARKING BRAKE SWITCH ASSEMBLY
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (CAMRY_ACV40 X394000005X02PD.html)

4.CHECK HARNESS AND CONNECTOR


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Parking Brake Switch Circuit

  1. Disconnect the S17 connector from the clearance warning ECU.

  1. Disconnect the E33 connector from the parking brake switch assembly.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S17-2 (P1) - E33-1
    		Always
    		Below 1 Ω
    S17-2 (P1) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT PARKING BRAKE SWITCH ASSEMBLY


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Parking Brake Switch Circuit

  1. Remove the parking brake switch assembly.

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    Switch connector (A) - Switch body (B)
    		ON (When shaft is not pressed)
    		Below 1 Ω
    Switch connector (A) - Switch body (B)
    		OFF (When shaft is pressed)
    		10 kΩ or higher


NG
REPLACE PARKING BRAKE SWITCH ASSEMBLY
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE (CAMRY_ACV40 X394000005X02PD.html)