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.

Entry And Start System - Door Oscillator Circuit. DOOR LOCK. Lexus IS250 IS220d GSE20 ALE20

1.INSPECT ELECTRICAL KEY OSCILLATOR

Disconnect the oscillator connectors.

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)

Disconnect the P33 ECU connector.

NG

REPAIR OR REPLACE HARNESS OR CONNECTOR

OK

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

Replace the door oscillator.

Check that the 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)

Reconnect the ECU and the oscillator connectors.

Connect the intelligent tester to the DLC3.

Turn the engine switch on (IG).

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

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

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

LEXUS IS250, IS220d / GSE20 ALE20