Section 604 (Engine Immobilizer System - Diagnosis): Pre-Check

WARNING: This page is about a different car, the 2002 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

CHECK LEXUS HAND-HELD TESTER

ECU DATA MONITOR

Make a judgement of good or bad and find out a malfunctioning part by the data monitor.

Standard:

TRANSPONDER KEY ECU

SPECIFIED CONDITION

Item	Condition	Specified condition
PREMIT (START)	Ignition switch ON --> Pull out key from ignition switch cylinder	OK/NG
IMMOBILISER	Ignition switch ON --> When key is not inserted in the ignition switch cylinder	UNSET/SET
MASTER KEY	Ignition switch ON with master key --> Pull out key from ignition switch cylinder	CORRESP/WRONG
SUB KEY	Ignition switch ON with sub-key --> Pull out key from ignition switch cylinder	CORRESP/WRONG
REGIST MAS CODE	-	0 - 3
REGIST SUB CODE	-	0 - 1
KEY SW	Ignition switch ON-->Without key	ON/OFF

Standard:

THEFT WARNING ECU

SPECIFIED CONDITION

Item	Condition	Specified condition
ACC SW	Ignition switch ACC-->OFF	ON/OFF
IG SW	Ignition switch	ON-->OFF ON/OFF

ACTIVE TEST

Make a judgement of good or bad and find out a malfunctioning part by the active test.

Standard:

TRANSPONDER KEY ECU

ACTIVE TEST

Item	Operation
SECURITY INDIC	ON/OFF