Wireless Door Lock Control System Wireless Door Lock Buzzer Circuit

Body Electrical. Lexus Is250, Is220D. Gse20 Ale20
Door Lock. Lexus Is250, Is220D. Gse20 Ale20

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - WIRELESS DOOR LOCK BUZZER)

CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - COWL SIDE J/B RH - BODY GROUND)

INSPECT WIRELESS DOOR LOCK BUZZER

WIRELESS DOOR LOCK CONTROL SYSTEM - Wireless Door Lock Buzzer Circuit


DESCRIPTION

The main body ECU RH activates the wireless door lock buzzer when detecting a lock/unlock signal from the door control transmitter.
This function only equipped for Australia and New Zealand models.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Wireless Door Lock Control System Wireless Door Lock Buzzer Circuit


INSPECTION PROCEDURE

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Turn the intelligent tester main switch on.

  1. Select the Active test mode on the intelligent tester.

    Main Body (Main Body ECU RH):
    Item (Display)
    		Tester Detail
    		Diagnostic Note
    Buzz Resp Sound
    		Wireless door lock buzzer ON/OFF
    		Buzzer (operation sound) can be heard

  1. Check that the buzzer sounds/stops when turning the wireless door lock buzzer on/off by using intelligent tester.

    Result
    Condition
    		Proceed to
    Buzzer sounds/stops
    		A
    Buzzer does not sound or sounds constantly
    		B


B
Go to step 2
A

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2.CHECK HARNESS AND CONNECTOR (MAIN BODY ECU RH - WIRELESS DOOR LOCK BUZZER)


    Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Wireless Door Lock Control System Wireless Door Lock Buzzer Circuit

  1. Disconnect the A36 main body ECU RH connector.

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

    Standard resistance:
    Symbol (Tester Connection)
    		Condition
    		Specified Condition
    BZR (A36-2) - A18-1
    		Always
    		Below 1 Ω
    BZR (A36-2) - Body ground
    		Always
    		10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK HARNESS AND CONNECTOR (WIRELESS DOOR LOCK BUZZER - COWL SIDE J/B RH - BODY GROUND)


    Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Wireless Door Lock Control System Wireless Door Lock Buzzer Circuit

  1. Disconnect RD J/B connector.

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

    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A18-2 - RD-11
    		Always
    		Below 1 Ω
    A18-2 - Body ground
    		Always
    		10 kΩ or higher
    RD-7 - Body ground
    		Always
    		Below 1 Ω


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.INSPECT WIRELESS DOOR LOCK BUZZER


    Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Wireless Door Lock Control System Wireless Door Lock Buzzer Circuit

  1. Disconnect the A18 wireless door lock buzzer connector.

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

    HINT:
    The buzzer circuit is built into the ECU, not into the buzzer itself. When battery voltage is applied directly to the buzzer, the buzzer will not sound.
    Standard resistance:
    Tester Connection
    		Condition
    		Specified Condition
    A18-1 - A18-2
    		Always
    		Approx. 1 kΩ


NG
REPLACE WIRELESS DOOR LOCK BUZZER
OK

REPLACE MAIN BODY ECU RH (COWL SIDE JUNCTION BLOCK RH)