Entry And Start System Luggage Oscillator Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ELECTRICAL KEY OSCILLATOR)

CHECK AND REPLACE ELECTRICAL KEY OSCILLATOR

PERFORM ACTIVE TEST BY INTELLIGENT TESTER

ENTRY AND START SYSTEM - Luggage Oscillator Circuit


DESCRIPTION

The certification ECU activates the inner and outer luggage compartment oscillators. The power is supplied from the certification ECU to both the inner and outer luggage compartment oscillators. The inner and outer luggage compartment oscillator circuits have the same wiring. If the entry luggage compartment function has a malfunction, check the circuit for a malfunctioning oscillator.

WIRING DIAGRAM


Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Entry And Start System Luggage Oscillator Circuit


INSPECTION PROCEDURE

1.CHECK HARNESS AND CONNECTOR (CERTIFICATION ECU - ELECTRICAL KEY OSCILLATOR)


    Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Entry And Start System Luggage Oscillator Circuit

  1. Disconnect the P33 ECU connector.

  1. Disconnect the oscillator connectors.

Standard resistance:
Tester Connection (Symbols)
Condition
Specified Condition
P33-16 (CG7B) - Q48-3 (CLGB)
Always
Below 1 Ω
P33-15 (CLG7) - Q48-1 (CLG6)
Always
Below 1 Ω
P33-32 (CG8B) - P31-2 (CLGB)
Always
Below 1 Ω
P33-31 (CLG8) - P32-1 (CLG5)
Always
Below 1 Ω
P33-16 (CB7B) - Body ground
Always
10 kΩ or higher
P33-15 (CLG7) - Body ground
Always
10 kΩ or higher
P33-32 (CG8B) - Body ground
Always
10 kΩ or higher
P33-31 (CLG8) - Body ground
Always
10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


2.CHECK AND REPLACE ELECTRICAL KEY OSCILLATOR

  1. Replace the electrical key oscillator.

  1. Check that the luggage compartment door entry LOCK / UNLOCK function operates normally.

    OK:
    Luggage compartment door entry LOCK / UNLOCK function operates normally.


OK
END (ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
NG


3.PERFORM ACTIVE TEST BY INTELLIGENT TESTER


    Lexus Is250, Is220D. Gse20 Ale20.Door Lock.Power Door Lock Control System.Entry And Start System Luggage Oscillator Circuit

  1. Reconnect the oscillator and the ECU connectors.

  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG).

  1. Following the display on the tester, select the "ACTIVE TEST".

    SMART KEY (Certification ECU):
    Item
    		Vehicle Condition/Test Details
    In Bdr Transmitter
    		Electrical key oscillator (Luggage compartment Inner) ON / OFF
    Bdoor Transmitter
    		Electrical key oscillator (Luggage compartment outer) ON / OFF

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

    Standard:
    Tester Connection (Symbols)
    		Condition
    		Specified Condition
    P33-16 (CG7B) - P33-15 (CLG7)
    		During ACTIVE TEST
    		Frequency is generated (higher than 0 Hz)
    P33-32 (CG8B) - P33-31 (CLG8)
    		During ACTIVE TEST
    		Frequency is generated (higher than 0 Hz)


NG
REPLACE CERTIFICATION ECU
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE