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.
|
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 |
- |
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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:
Cruise Main Indicator Light Circuit
DESCRIPTION
When the ECM detects a cruise control switch on signal from the cruise
control switch, the ECM sends the signal to the combination meter assembly
through CAN communication. Then the cruise control indicator light turns
on.
The cruise control indicator light circui ...
Abnormal Change in Output Signal of Front Speed Sensor RH (Test Mode DTC) (C1275,...,C1414)
DESCRIPTION
Refer to DTCs C1401 and C1402 (See page ).
DTC Code
DTC Detection Condition
Trouble Area
C1275
C1276
Stored only during test mode.
Front speed sensor RH/LH
Front speed sensor rotor RH/LH (Front ...
Front Passenger Side Seat Belt Warning Light Malfunction
DESCRIPTION
The occupant classification ECU detects the state of the front seat inner belt
assembly RH and load sensor when the front passenger side seat is occupied with
the ignition switch ON. If the front passenger side seat belt is not fastened, the
front passenger side seat belt warning ...
