Entry And Start System Entry Interior Alarm Does Not Sound

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

PERFORM ACTIVE TEST (COMBINATION METER)

ENTRY AND START SYSTEM - Entry Interior Alarm does not Sound


DESCRIPTION

Each of the entry and start system's warnings uses the key reminder warning buzzer to alert the driver.
The combination meter repeatedly sounds the key reminder warning buzzer when one of the following occurs: 1) the activation conditions for the entry and start system warning is met, or 2) the certification ECU assembly sends a key reminder warning buzzer signal via the BEAN line to the combination meter.

WIRING DIAGRAM


Lexus Gs430, Gs300. Uzs190 Grs190.Door Lock.Power Door Lock Control System.Entry And Start System Entry Interior Alarm Does Not Sound


INSPECTION PROCEDURE

HINT:
The entry and start system is part of the large-scale body multiplex communication system. The first step in any repair is to confirm the proper operation of the multiplex communication system. Perform the troubleshooting after proper operation of the multiplex communication has been verified.
1.PERFORM ACTIVE TEST (COMBINATION METER)

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

    Meter ECU:
    Item
    		Test Details
    		Diagnostic Note
    Key Remind Buzzer
    		Key reminder buzzer ON / OFF
    		-
    OK:
    Key reminder buzzer sounds.


NG
GO TO COMBINATION METER
OK

REPLACE CERTIFICATION ECU ASSEMBLY