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

Toyota Tacoma (2015-2018) Service Manual / Seat / Seat Heater 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.

Seat Heater System

Symptom	Suspected Area	See page
Seat heater does not operate for driver side and front passenger side seat	Harness and connector	-
	Air conditioning control assembly
	Air conditioning amplifier assembly
Front seat heater does not operate (for driver)	Driver side seat heater does not operate
	Air conditioning control assembly
	Front seat cushion heater assembly LH
	Front seatback heater assembly LH
	Wire harness or connector	-
Front seat heater does not operate (for front passenger)	Front passenger side seat heater does not operate
	Air conditioning control assembly
	Front seat cushion heater assembly RH
	Front seatback heater assembly RH
	Wire harness or connector	-

Dtc Check / Clear

DTC CHECK / CLEAR 1. CHECK DTC (a) Connect the Techstream to the DLC3. (b) Turn the ignition switch to ON. (c) Turn the Techstream on. (d) Enter the following menus: Body Electrical / Air Conditi ...

Terminals Of Ecu

TERMINALS OF ECU 1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY (a) Disconnect the A36 air conditioning amplifier assembly connector. (b) Measure the voltage and resistance according to the value(s ...

Other materials:

Precaution
PRECAUTION 1. CAUTION REGARDING INTERFERENCE WITH ELECTRONIC DEVICES CAUTION: People with implantable cardiac pacemakers, cardiac resynchronization therapy-pacemakers or implantable cardioverter defibrillators should keep away from the smart key system antennas. The radio waves ma ...

No Sound can be Heard from Speakers
PROCEDURE 1. CHECK AUDIO SETTINGS (a) Display the "Sound Settings" screen. (b) Set volume, fader and balance to the initial values and check that sound is normal. OK: Audio system returns to normal. HINT: Sound quality adjustment measures vary acco ...

Lost Communication with HMI-LAN (B150A)
DESCRIPTION The combination meter assembly receives a text data signal from the navigation receiver assembly or radio and display receiver assembly via local bus communication. Based on this signal, navigation system information is displayed on the multi-information display. This DTC is store ...