Entry And Start System Door Oscillator Circuit

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

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

INSPECT ELECTRICAL KEY OSCILLATOR

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

CHECK AND REPLACE ELECTRICAL KEY OSCILLATOR (CHECK OPERATION OF OSCILLATOR)

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (CERTIFICATION ECU OUTPUT SIGNAL)

ENTRY AND START SYSTEM - Door Oscillator Circuit


DESCRIPTION

Door oscillators are built into each door. Each of them forms its own action area around its door and detects the presence of the electrical key.

WIRING DIAGRAM


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


INSPECTION PROCEDURE

1.INSPECT ELECTRICAL KEY OSCILLATOR


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

  1. Disconnect the oscillator connectors.

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

    Standard voltage:
    Front LH side:
    Tester Connection (Symbols)
    		Condition
    		Specified Condition
    o2-1 (+B) - o2-7 (GND)
    		Always
    		10 to 14 V
    Front RH side:
    Tester Connection (Symbols)
    		Condition
    		Specified Condition
    n2-1 (+B) - n2-7 (GND)
    		Always
    		10 to 14 V


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


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


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

  1. Disconnect the P33 ECU connector.

Standard resistance:
Tester Connection (Symbols)
Condition
Specified Condition
P33-33 (CLG1) - o2-10 (CLG)
Always
Below 1 Ω
P33-34 (CG1B) - o2-5 (CLGB)
Always
Below 1 Ω
P33-35 (CLG2) - n2-10 (CLG)
Always
Below 1 Ω
P33-36 (CG2B) - n2-5 (CLGB)
Always
Below 1 Ω
P33-33 (CLG1) - Body ground
Always
10 kΩ or higher
P33-34 (CG1B) - Body ground
Always
10 kΩ or higher
P33-35 (CLG2) - Body ground
Always
10 kΩ or higher
P33-36 (CG2B) - Body ground
Always
10 kΩ or higher


NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


3.CHECK AND REPLACE ELECTRICAL KEY OSCILLATOR (CHECK OPERATION OF OSCILLATOR)

  1. Replace the door oscillator.

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

    OK:
    Entry LOCK / UNLOCK function operates normally.


OK
END (ELECTRICAL KEY OSCILLATOR IS DEFECTIVE)
NG


4.PERFORM ACTIVE TEST BY INTELLIGENT TESTER (CERTIFICATION ECU OUTPUT SIGNAL)


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

  1. Reconnect the ECU and the oscillator 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
    D Transmitter
    		Door Oscillator ON / OFF
    P Transmitter
    		Door Oscillator ON / OFF

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

    Standard:
    Tester Connection (Symbols)
    		Condition
    		Specified condition
    P33-33 (CLG1) - P33-34 (CG1B)
    		During ACTIVE TEST
    		Frequency is generated (higher than 0 Hz)
    P33-35 (CLG2) - P33-36 (CG2B)
    		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