Toyota 4Runner: Problem Symptoms Table

Toyota 4Runner Service Manual / Suspension / Tire Pressure Monitoring / Tire Pressure Warning 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.

Tire Pressure Warning System

Symptom	Suspected Area	See page
Tire pressure warning light does not illuminate despite tire pressure decreasing	Check Data List (Tire inflation pressure)
	ID code check (Registration)
Tire pressure warning light remains illuminated (Goes off during initial check)	Tire pressure warning light circuit
	ECU power source circuit
Tire pressure warning light remains illuminated (Comes on during initial check)	Check Data List (Tire inflation pressure)
	Tire pressure adjustment
	ID code check (Registration)
DTC check cannot be performed	TC and CG terminal circuit
DTC check cannot be performed	ECU power source circuit

Test Mode Procedure

TEST MODE PROCEDURE 1. PERFORM SIGNAL CHECK HINT: When entering signal check mode, the tire pressure warning ECU stores all the signal check DTCs first. After completing the signal chec ...

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK TIRE PRESSURE WARNING ECU HINT: Inspect the connector from the back side. (a) Disconnect the F7 ECU connector. (b) Measure the voltage according to the value(s) in the ...

Other materials about Toyota 4Runner:

Short to Battery in Motor RH Circuit (25,26)
DESCRIPTION When there is a short to battery in the side auto step motor circuit, the side auto step controller ECU assembly will not operate the automatic running board. DTC No. Detection Condition Trouble Area ...

On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT PARK/NEUTRAL POSITION SWITCH ASSEMBLY (a) Apply the parking brake and turn the ignition switch on (IG). (b) Depress the brake pedal and check that the engine starts when the shift lever is in N or P, but does no ...