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Home >> Toyota >> 2001 >> 4Runner Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 469 (Engine Immobilizer System - Diagnostics) >> Problem Symptoms
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Problem Symptoms

WARNING: This page is about a different car, the 2002 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
PROBLEM SYMPTOM

Symptom/Suspected Area See
Immobilizer Is Not Set (Engine Starts With Key Codes Other Than The Registered Key Code)
ECM HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Engine Does Not Start
Key (1)
Wire Harness HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Transponder Key Amplifier .....
ECM HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Security Indicator Is Always ON
Security Indicator Light SECURITY INDICATOR LIGHT CIRCUIT  & (2)
Wire Harness HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
ECM HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Security Indicator Is Always ON (Although Code Has Been Registered In The Automatic Registration Mode, Indicator Is Not OFF
Wire Harness HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Transponder Key Amplifier .....
ECM HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Security Indicator Is OFF (When DTC Of Inmobilizer Is Output)
Wire Harness HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Transponder Key Amplifier .....
ECM HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Security Indicator Is OFF (When DTC Of Immobilizer Is Not Output)
Wire Harness HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
ECM HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Security Indicator Is Abnormally Blinking
Wire Harness HOW TO USE THE DIAGNOSTIC CHART AND INSPECTION PROCEDURE
Security Indicator Light Circuit SECURITY INDICATOR LIGHT CIRCUIT 
ECM .....
(1) Check that the key which did not start the engine has been registered and that it is possible to start with the other already registered key codes.
(2) Finish the automatic registration mode because the mode might still remain.