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:

Components
COMPONENTS ILLUSTRATION HINT: The following specifications are for BD20D (w/o Differential Lock). BD20D differentials are equipped with M8 rear differential carrier to rear axel housing fasteners. ILLUSTRATION ILLUSTRATION ...

If the engine will not start
If the engine still does not start after following the correct starting procedure (→P. 141) or releasing the steering lock (→P. 142), confirm the following points. ■ The engine will not start even when the starter motor operates normally. One of the following may be the cause o ...

AV Signal Stoppage (Low Battery Voltage) (B158F)
DESCRIPTION This DTC is stored when a video or audio signal is interrupted due to battery voltage input to the navigation receiver assembly dropping temporarily. DTC Code DTC Detection Condition Trouble Area B158F A video or audio sign ...