Toyota Parking Assist-Sensor System Reverse Signal Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT FUSE (GAUGE NO. 1)

CHECK CLEARANCE WARNING ECU (REVERSE SIGNAL INPUT)

CONFIRM MODEL

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

INSPECT PARK/NEUTRAL POSITION SWITCH

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

INSPECT PARK/NEUTRAL POSITION SWITCH

CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BACK-UP LIGHT SWITCH)

INSPECT BACK-UP LIGHT SWITCH

TOYOTA PARKING ASSIST-SENSOR SYSTEM - Reverse Signal Circuit


DESCRIPTION

The clearance warning ECU receives the reverse signal from the park/neutral position switch (for A/T) or back-up light switch (for M/T).

WIRING DIAGRAM


Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Reverse Signal Circuit


INSPECTION PROCEDURE

1.INSPECT FUSE (GAUGE NO. 1)

  1. Remove the GAUGE NO. 1 fuse from the main body ECU (instrument panel junction block ).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    GAUGE NO. 1 fuse
    		Always
    		Below 1 Ω


NG
REPLACE FUSE
OK


2.CHECK CLEARANCE WARNING ECU (REVERSE SIGNAL INPUT)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Reverse Signal Circuit

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

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

    Standard Voltage:
    Tester Connection
    		Condition
    		Specified Condition
    S17-5 (BL) - Body ground
    		Ignition switch ON, shift lever in R
    		7 V or higher


NG
Go to step 3
OK

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

3.CONFIRM MODEL

  1. Choose the model to be inspected.

    Result:
    Model
    		Proceed to
    for A/T (U250E)
    		A
    for A/T (U660E)
    		B
    for M/T
    		C


B
Go to step 6

C
Go to step 8
A


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


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Reverse Signal Circuit

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

  1. Disconnect the C1 connector from the park/neutral position switch.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S17-5 (BL) - C1-1 (RL)
    		Always
    		Below 1 Ω
    S17-5 (BL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT PARK/NEUTRAL POSITION SWITCH

  1. Remove the park/neutral position switch (CAMRY_ACV40 RM000000YWR00WX.html).



    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Reverse Signal Circuit

  1. 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 in R
    		Below 1 Ω
    1 (RL) - 2 (RB)
    		Shift lever in any position except R
    		10 kΩ or higher


NG
REPLACE PARK/NEUTRAL POSITION SWITCH (CAMRY_ACV40 RM000000YWV01WX.html)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR

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


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Reverse Signal Circuit

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

  1. Disconnect the C1 connector from the park/neutral position switch.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S17-5 (BL) - C1-2 (RL)
    		Always
    		Below 1 Ω
    S17-5 (BL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


7.INSPECT PARK/NEUTRAL POSITION SWITCH

  1. Remove the park/neutral position switch (CAMRY_ACV40 RM0000016E101QX.html).



    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Reverse Signal Circuit

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    2 (RL) - 1 (RB)
    		Shift lever in R
    		Below 1 Ω
    2 (RL) - 1 (RB)
    		Shift lever in any position except R
    		10 kΩ or higher


NG
REPLACE PARK/NEUTRAL POSITION SWITCH (CAMRY_ACV40 RM0000016E101QX.html)
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR

8.CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - BACK-UP LIGHT SWITCH)


    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Reverse Signal Circuit

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

  1. Disconnect the C28 connector from the back-up light switch.

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    S17-5 (BL) - C28-1
    		Always
    		Below 1 Ω
    S17-5 (BL) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


9.INSPECT BACK-UP LIGHT SWITCH

  1. Remove the back-up light switch.



    Camry. Acv40 Gsv40.Park Assist Monitoring.Toyota Parking Assist-Sensor System.Toyota Parking Assist-Sensor System Reverse Signal Circuit

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

    Standard Resistance:
    Tester Connection
    		Switch Condition
    		Specified Condition
    1 - 2
    		Push
    		Below 1 Ω
    1 - 2
    		Release
    		10 kΩ or higher


NG
REPLACE BACK-UP LIGHT SWITCH
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR