Toyota 4Runner: Problem Symptoms Table

Toyota 4Runner Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Engine Immobiliser System(w/ Smart Key System) / Problem Symptoms Table

PROBLEM SYMPTOMS TABLE

HINT:

Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
Inspect the fuses and relays related to this system before inspecting the suspected areas below.

Engine Immobiliser System

Symptom	Suspected Area	See page
Engine does not start	LIN communication system
	ID code box power source circuit
	Certification ECU power source circuit
	Steering lock system
	Smart key system (for Start Function)
	SFI system
Security indicator light malfunction	Security indicator light circuit
Security indicator light malfunction	Certification ECU

Registration

REGISTRATION PROCEDURE 1. DESCRIPTION OF CODE REGISTRATION HINT: The engine immobiliser function ID code is the same as the recognition code for the smart key system and wireless trans ...

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK ENGINE SWITCH (a) Disconnect the F71 switch connector. (b) Measure the resistance according to the value(s) in the table below. Terminal No. (Symbol) ...

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Components
COMPONENTS ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ILLUSTRATION ...

Fail-safe Chart
FAIL-SAFE CHART 1. POWER WINDOW OPERATION IN FAIL-SAFE MODE HINT: If the pulse sensor built into a power window regulator motor malfunctions, the power window control system enters fail-safe mode. (a) The power window control system prohibits the followi ...