Toyota 4Runner: Problem Symptoms Table

Toyota 4Runner Service Manual / Vehicle Exterior / Window / Glass / Window Defogger 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.

Window Defogger System

Symptom	Suspected Area	See page
Rear window defogger system does not operate	Proceed to "Rear Window Defogger System does not Operate"

Operation Check

OPERATION CHECK 1. CHECK WINDOW DEFOGGER SYSTEM OPERATION (a) When the ignition switch is turned to ON and the heater control (window defogger switch) is pressed, check that the window defogger op ...

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the F42 air conditioning amplifier connector. (b) Measure the voltage and resistance according to the value(s) in the ...

Other materials about Toyota 4Runner:

Open or Short in Master Cylinder Pressure Sensor (C1421,C1281,C1423,C1424)
DESCRIPTION DTC Code DTC Detection Condition Trouble Area C1421 Either condition is met: Both of the following conditions continue for at least 1.2 seconds. The IG1 terminal volta ...

Reassembly
REASSEMBLY CAUTION / NOTICE / HINT CAUTION: Wear protective gloves. Sharp areas on the parts may injure your hands. PROCEDURE 1. INSTALL REAR NO. 1 SEAT PROTECTOR LH (a) Attach the claw to install the protector. 2. INSTALL REAR NO. 1 SEAT PROTECTOR (a) ...