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:

Driver Side Solar Sensor Short Circuit (B14A2)
DESCRIPTION The automatic light control sensor (solar sensor), which is installed on the upper side of the instrument panel, detects sunlight and controls the air conditioning in auto mode. The output current from the automatic light control sensor (sol ...

Inspection
INSPECTION PROCEDURE 1. INSPECT BRAKE BOOSTER PUMP ASSEMBLY (a) Apply battery voltage to the brake booster pump cables, and check the operation of the pump motor. OK:: Measurement Condition Specified C ...