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:

Rear Differential Lock Control Switch
Components COMPONENTS ILLUSTRATION Inspection INSPECTION PROCEDURE 1. INSPECT DIFFERENTIAL LOCK SWITCH (a) Measure the resistance according to the value(s) in the table below. Standard Resistance: Tester Connection Switc ...

Rear Occupant Classification Sensor LH Collision Detection (B1787)
DESCRIPTION DTC B1787 is stored when the occupant classification ECU receives a collision detection signal, which is sent by the rear occupant classification sensor LH when an accident occurs. DTC B1787 is also stored when the separate type front seat cu ...