Toyota Tacoma (2015-2018) Service Manual: Problem Symptoms Table

Toyota Tacoma (2015-2018) Service Manual / Tire And Wheel / 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	Initialization
	Check Data List (ID Tire Inflation Pressure)
	ID code check (Registration)
Tire pressure warning light remains illuminated (Goes off during initial check)	Tire pressure warning light circuit
Tire pressure warning light remains illuminated (Illuminates during initial check)	Check Data List (ID Tire Inflation Pressure)
	Tire pressure adjustment
	ID code check (Registration)
	Initialization
Initialization cannot be done	Tire pressure warning reset switch
DTC check cannot be done using SST check wire	TC and CG terminal circuit
DTC check cannot be done using SST check wire	ECU power source circuit
Tire position not identified*	Tire pressure warning valve and transmitter
Tire position not identified*	Main body ECU (Multiplex network body ECU)	-

*: w/ Tire Inflation Pressure Display Function

Registration

REGISTRATION PROCEDURE 1. BEFORE REGISTRATION NOTICE: The transmitter ID is written on the tire pressure warning valve and transmitter. It is not possible to read the transmitter ID after instal ...

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK TIRE PRESSURE WARNING ECU AND RECEIVER (a) Disconnect the T14 tire pressure warning ECU and receiver connector and measure the voltage and resistance on the wire harness ...

Other materials:

Removal
REMOVAL PROCEDURE 1. PRECAUTION NOTICE: After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before pr ...

Noise Occurs or Sound Skips when Portable Player Plays
CAUTION / NOTICE / HINT HINT: Perform this check with the portable player volume set at an appropriate level. Make sure that there are no obstructions between the portable player and navigation receiver assembly that may block signals, and that the portable player and navig ...

Immobiliser System does not Operate Properly
DESCRIPTION The engine immobiliser system compares the ID code that is registered in the certification ECU (smart key ECU assembly) with the ID code of the transponder chip that is embedded in the electrical key transmitter sub-assembly. WIRING DIAGRAM (See page ). CAUTION / NOTICE / HINT ...