Toyota Tacoma manuals

Toyota Tacoma 2015-2018 Service Manual: 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:

Customize Parameters
CUSTOMIZE PARAMETERS CUSTOMIZE LANE DEPARTURE ALERT SYSTEM NOTICE: When the customer requests a change in a function, first make sure that the function can be customized. Be sure to make a note of the current settings before customizing. When troubleshooting a function, fir ...

How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT Techstream can be used in steps 3, 6, 9 and 12. PROCEDURE 1. VEHICLE BROUGHT TO WORKSHOP NEXT 2. CUSTOMER PROBLEM ANALYSIS ...

Operation Check
OPERATION CHECK INPUT SIGNAL CHECK *a +RES *b -SET *c ON-OFF *d CANCEL (a) Connect the Techstream to the DLC3. (b) Check the cruise control main switch using the Data List functio ...

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