POWER BACK DOOR SYSTEM > Power Back Door Opener / Closer Switch Circuit

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DESCRIPTION

The power back door opener/closer switch only turns on while the switch is being pressed, and turns off when the switch is released.
The body ECU is connected to the power back door opener/closer switch via terminal PBDS and power back door operation request signals are input to the ECU.
The body ECU applies voltage to the power back door opener/closer switch via terminal PBDS. When the switch is on (there is continuity between the switch terminals), a power back door operation request signal is input to the body ECU to operate the back door.

NOTICE:
The power back door ECU records the back door positions in the memory. In the case where any of the batteries, fuses, power back door ECU and power back door drive unit are removed and then reinstalled, the power back door ECU loses the memory of the door positions. In such a case, resetting the power back door system is necessary. Refer to the resetting operation specified in page Click here.


WIRING DIAGRAM


B109773E21


INSPECTION PROCEDURE

1.READ VALUE OF DATA LIST (POWER BACK DOOR OPENER/CLOSER SWITCH)

  1. Check the DATA LIST to ensure proper functioning of the power back door opener/closer switch.

    Body ECU 
    Item
    		Measurement Item /
    Display (Range)
    		Normal Condition
    		Diagnostic Note
    B Door Open SW
    		Power back door opener/closer switch signal
    /ON or OFF
    		ON: Power back door opener/ closer switch is pushed
    OFF: Power back door opener/ closer switch is not pushed
    		-

    OK:
    The display is as specified in the normal condition.



NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

2.INSPECT POWER BACK DOOR OPENER/CLOSER SWITCH ASSEMBLY


    B070510E01

  1. Remove the power back door opener/closer switch assembly.

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

    Standard resistance:
    Tester Connection
    		Switch Position
    		Specified Condition
    3 - 4
    		Pushed (ON)
    		Below 1 Ω
    3 - 4
    		Free (OFF)
    		10 kΩ or higher



NG
REPLACE POWER BACK DOOR OPENER /CLOSER SWITCH ASSEMBLY
OK


3.CHECK WIRE HARNESS (POWER BACK DOOR OPENER/CLOSER SWITCH - POWER BACK DOOR ECU)


    B112739E02

  1. Disconnect the power back door opener/closer switch assembly connector.

  1. Disconnect the instrument panel J/B connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    P7-3 - B7-2 (PBDS)
    		Always
    		Below 1 Ω
    P7-4 - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE