Toyota 4Runner: Problem Symptoms Table

Toyota 4Runner Service Manual / Vehicle Interior / Theft Deterrent / Keyless Entry / Engine Immobiliser System(w/o 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	ECU power source circuit
	SFI system
	Transponder key ECU assembly
Security indicator light malfunction	Security indicator light circuit
Security indicator light malfunction	Transponder key ECU assembly
Unable to register key	Key	-
Unable to register key	Transponder key ECU assembly

Dtc Check / Clear

DTC CHECK / CLEAR HINT: When using the Techstream with the ignition switch off to troubleshoot: Connect the Techstream to the vehicle and turn the front door courtesy light switch LH ...

Push Switch / Key Unlock Warning Switch Malfunction (B2780)

DESCRIPTION This DTC is stored if the transponder key ECU assembly does not detect that the unlock warning switch assembly is on even when the ignition switch is ON. Under normal conditions, the ...

Other materials about Toyota 4Runner:

Rear Stabilizer Bar(w/o Kdss)
Components COMPONENTS ILLUSTRATION Inspection INSPECTION PROCEDURE 1. INSPECT REAR STABILIZER LINK ASSEMBLY (a) As shown in the illustration, flip the ball joint stud back and forth 5 times. ...

Maintenance requirements
To ensure safe and economical driving, day-to-day care and regular maintenance are essential. It is the owner’s responsibility to perform regular checks. Toyota recommends performing the following maintenance: General maintenance General mainten ...