Entry And Start System Key Luggage Compartment Lock-In Prevention Function Does Not Operate

Body Electrical. Lexus Gs430, Gs300. Uzs190 Grs190
Door Lock. Lexus Gs430, Gs300. Uzs190 Grs190

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK LUGGAGE DOOR OPENING SWITCH ASSEMBLY

CHECK MANUAL LUGGAGE COMPARTMENT DOOR OPENER OPERATION

READ DATA LIST (DOOR COURTESY SWITCH)

READ DATA LIST (LOCK POSITION SWITCH)

PERFORM ACTIVE TEST (LUGGAGE ELECTRICAL KEY ANTENNA (INNER))

CHECK WIRE HARNESS (ENTRY DOOR CONTROL RECEIVER - BATTERY AND BODY GROUND)

CHECK WIRE HARNESS (ENTRY DOOR CONTROL RECEIVER - CERTIFICATION ECU ASSEMBLY)

CHECK ENTRY DOOR CONTROL RECEIVER

CHECK LUGGAGE ELECTRICAL KEY ANTENNA (INNER)

READ DATA LIST (POWER LUGGAGE DOOR OPEN SWITCH)

CHECK OPERATION OF CERTIFICATION ECU ASSEMBLY

CHECK WIRE HARNESS (LUGGAGE ELECTRICAL KEY ANTENNA (INNER) - CERTIFICATION ECU ASSEMBLY)

CHECK OPERATION OF LUGGAGE ELECTRICAL KEY ANTENNA (INNER)

ENTRY AND START SYSTEM - Key Luggage Compartment Lock-in Prevention Function does not Operate


DESCRIPTION

With the key inside the luggage compartment, press the power luggage door open switch. The certification ECU uses the luggage electrical key antennas (outer and inner) to output request signals. The luggage electrical key antenna (outer) cannot verify an ID code in this situation. The key receives the request and transmits its ID code to the antenna. The ID code is then sent to the certification ECU through the luggage electrical key antenna (inner) in order to be confirmed by the certification ECU. If the ID code is verified, the certification ECU sends a luggage compartment door open signal to the cowl side junction block LH (cowl side junction block ECU LH) using the multiplex communication line and stops outputting request signals. The luggage compartment door then can be opened.
HINT:
*: The key luggage compartment lock-in prevention function does not operate for 100% of the luggage compartment (Click here).

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Key Luggage Compartment Lock-In Prevention Function Does Not Operate


INSPECTION PROCEDURE

1.CHECK LUGGAGE DOOR OPENING SWITCH ASSEMBLY


    Lexus Gs430, Gs300. Uzs190 Grs190

  1. Turn the luggage door opening switch OFF and check that the entry luggage compartment door opener function operates normally.

    OK:
    Entry luggage compartment door opener function operates normally.


OK
END
NG


2.CHECK MANUAL LUGGAGE COMPARTMENT DOOR OPENER OPERATION

  1. Check that the manual luggage compartment door opener function operates normally.

    OK:
    Manual luggage compartment door opener function operates normally.


NG
GO TO POWER DOOR LOCK CONTROL SYSTEM
OK


3.READ DATA LIST (DOOR COURTESY SWITCH)

  1. Check the Data List for proper functioning of each door courtesy switch.

    Multiplex network master switch assembly:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Courtesy SW
    		Courtesy switch / ON or OFF
    		ON: Courtesy switch is pushed
    OFF: Courtesy switch is not pushed
    		-

    Multiplex network door ECU front LH (RHD):
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Courtesy SW
    		Courtesy switch / ON or OFF
    		ON: Courtesy switch is pushed
    OFF: Courtesy switch is not pushed
    		-

    Multiplex network door ECU front RH (LHD):
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Courtesy SW
    		Courtesy switch / ON or OFF
    		ON: Courtesy switch is pushed
    OFF: Courtesy switch is not pushed
    		-

    Multiplex network door ECU rear LH:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Courtesy SW
    		Courtesy switch / ON or OFF
    		ON: Courtesy switch is pushed
    OFF: Courtesy switch is not pushed
    		-

    Multiplex network door ECU rear RH:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Courtesy SW
    		Courtesy switch / ON or OFF
    		ON: Courtesy switch is pushed
    OFF: Courtesy switch is not pushed
    		-

    Multiplex network rear ECU:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Lugg Courtesy SW
    		Luggage compartment door switch / ON or OFF
    		ON: Courtesy switch is pushed
    OFF: Courtesy switch is not pushed
    		-
    OK:
    ON (door courtesy switch is pushed) appears on the screen.


NG
GO TO LIGHTING SYSTEM
OK


4.READ DATA LIST (LOCK POSITION SWITCH)

  1. Check the Data List for proper functioning of the door lock position switch.

    Multiplex network master switch assembly:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Lock Pos SW
    		Door unlock detection switch signal / ON or OFF
    		ON: Door is unlocked
    OFF: Door is locked
    		-

    Multiplex network door ECU front RH (LHD):
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Lock Pos SW
    		Door unlock detection switch signal / ON or OFF
    		ON: Door is unlocked
    OFF: Door is locked
    		-

    Multiplex network door ECU front LH (RHD):
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Lock Pos SW
    		Door unlock detection switch signal / ON or OFF
    		ON: Door is unlocked
    OFF: Door is locked
    		-

    Multiplex network door ECU rear LH:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Lock Pos SW
    		Door unlock detection switch signal / ON or OFF
    		ON: Door is unlocked
    OFF: Door is locked
    		-

    Multiplex network door ECU rear RH:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Lock Pos SW
    		Door unlock detection switch signal / ON or OFF
    		ON: Door is unlocked
    OFF: Door is locked
    		-
    OK:
    ON (Door is unlocked) appears on the screen.


NG
GO TO POWER DOOR LOCK CONTROL SYSTEM
OK


5.PERFORM ACTIVE TEST (LUGGAGE ELECTRICAL KEY ANTENNA (INNER))

  1. Select the Active Test, use the intelligent tester to generate a control command, and then check that the antenna (inner) operates.

    Certification ECU:
    Item
    		Test Details
    		Diagnostic Note
    In Bdr Transmitter
    		Luggage compartment door inner antenna ON / OFF
    		-
    OK:
    When key is brought close to luggage compartment door, antenna (inner) is turned OFF and indicator on key illuminates.


NG
Go to step 11
OK


6.CHECK WIRE HARNESS (ENTRY DOOR CONTROL RECEIVER - BATTERY AND BODY GROUND)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Key Luggage Compartment Lock-In Prevention Function Does Not Operate

  1. Disconnect the V36 receiver connector.

  1. Measure the voltage and resistance of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Specified Condition
    V36-2 (+5) - Body ground
    		5 V
    Standard resistance:
    Tester Connection
    		Specified Condition
    V36-6 (GND) - Body ground
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


7.CHECK WIRE HARNESS (ENTRY DOOR CONTROL RECEIVER - CERTIFICATION ECU ASSEMBLY)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Key Luggage Compartment Lock-In Prevention Function Does Not Operate

  1. Disconnect the V36 receiver connector.

  1. Disconnect the V28 ECU connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    V36-3 (DATA) - V28-38 (RDA)
    		Below 1 Ω
    V36-5 (RSSI) - V28-39 (RSSI)
    		Below 1 Ω
    V36-4 (ASEL) - V28-37 (ASEL)
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


8.CHECK ENTRY DOOR CONTROL RECEIVER
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Key Luggage Compartment Lock-In Prevention Function Does Not Operate

  1. Measure the frequency of the receiver connector.

    Standard frequency:
    Tester Connection
    		Condition
    		Specified Condition
    7 (ANT) - 6 (GND)
    		Key is placed near center of luggage compartment and luggage compartment door is closed
    		Above 0 Hz


NG
REPLACE ENTRY DOOR CONTROL RECEIVER
OK


9.CHECK LUGGAGE ELECTRICAL KEY ANTENNA (INNER)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Key Luggage Compartment Lock-In Prevention Function Does Not Operate

  1. Disconnect the W32 connector.

  1. Measure the voltage and resistance of the wire harness side connector.

    Standard voltage:
    Tester Connection
    		Specified Condition
    W32-3 (CLGB) - Body ground
    		10 to 14 V
    Standard resistance:
    Tester Connection
    		Specified Condition
    W32-1 (CLG6) - Body ground
    		Below 1 Ω


NG
Go to step 12
OK


10.READ DATA LIST (POWER LUGGAGE DOOR OPEN SWITCH)

  1. Check the Data List for proper functioning of the power luggage door open switch.

    Cowl side junction block ECU LH:
    Item
    		Measurement Item / Range (Display)
    		Normal Condition
    		Diagnostic Note
    Lugg Push SW
    		Power luggage door open switch / ON or OFF
    		ON: Power luggage door open switch is pushed
    OFF: Power luggage door open switch is not pushed
    		-
    OK:
    ON (power luggage door open switch is pushed) appears on the screen.


NG
REPLACE LUGGAGE COMPARTMENT DOOR LOCK ASSEMBLY
OK


11.CHECK OPERATION OF CERTIFICATION ECU ASSEMBLY

  1. After replacing the certification ECU assembly with a normal one, check that the key luggage lock-in prevention function operates normally.

    OK:
    Key luggage lock-in prevention function operates normally.


NG
REPLACE COWL SIDE JUNCTION BLOCK LH (COWL SIDE JUNCTION BLOCK ECU LH)
OK

END (CERTIFICATION ECU ASSEMBLY IS DEFECTIVE)

12.CHECK WIRE HARNESS (LUGGAGE ELECTRICAL KEY ANTENNA (INNER) - CERTIFICATION ECU ASSEMBLY)
Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Key Luggage Compartment Lock-In Prevention Function Does Not Operate

  1. Disconnect the W32 antenna connector.

  1. Disconnect the V28 ECU connector.

  1. Measure the resistance of the wire harness side connectors.

    Standard resistance:
    Tester Connection
    		Specified Condition
    W32-1 (CLG6) - V28-15 (CLG7)
    		Below 1 Ω
    W32-1 (CLG6) or V28-15 (CLG7) - Body ground
    		10 kΩor higher
    W32-3 (CLGB) - V28-16 (CG7B)
    		Below 1 Ω
    W32-3 (CLGB) - V28-16 (CG7B) - Body ground
    		10 kΩor higher


NG
REPAIR OR REPLACE HARNESS AND CONNECTOR
OK


13.CHECK OPERATION OF LUGGAGE ELECTRICAL KEY ANTENNA (INNER)

  1. After replacing the luggage electrical key antenna (inner) with a normal one, check that the key luggage lock-in prevention function operates normally.

    OK:
    Key luggage lock-in prevention function operates normally.


NG
REPLACE CERTIFICATION ECU ASSEMBLY
OK

END (LUGGAGE ELECTRICAL KEY ANTENNA (INNER) IS DEFECTIVE)