Toyota Tacoma 2015-2018 Service Manual: Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
- 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 |
|---|---|---|
|
Only Driver Door LOCK/UNLOCK Functions do not Operate |
Front door lock assembly LH |
|
|
Wire harness or connector |
- |
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
Driver side junction block |
|
|
|
Only Front Passenger Door LOCK/UNLOCK Functions do not Operate |
Front door lock assembly RH |
|
|
Wire harness or connector |
- |
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
Driver side junction block |
|
|
|
Only Rear Door LH LOCK/UNLOCK Functions do not Operate |
Rear door lock assembly LH*2 |
|
|
Wire harness or connector |
- |
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
Driver side junction block |
|
|
|
Only Rear Door RH LOCK/UNLOCK Functions do not Operate |
Rear door lock assembly RH*2 |
|
|
Wire harness or connector |
- |
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
Driver side junction block |
|
|
|
Speed-sensitive automatic door lock function does not operate (meter / gauge system operates normally) |
Harness or connector |
- |
|
Combination meter assembly |
|
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
Driver door-linked automatic door unlock function does not operate |
Main body ECU (Multiplex network body ECU) |
|
|
Key lock-in prevention function does not operate |
Unlock warning switch assembly |
|
|
Harness or connector |
- |
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
All Doors LOCK/UNLOCK Functions do not Operate |
Main body ECU (Multiplex network body ECU) |
|
|
All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch or Door Key Cylinder |
Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch or Door Key Cylinder" |
|
|
All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch |
Proceed to "All Doors LOCK/UNLOCK Functions do not Operate Via Door Control Switch" |
|
|
Lock Operation Continues even after Doors have been Locked*1 |
Front door lock assembly LH |
|
|
Front door lock assembly RH |
|
|
|
Rear door lock assembly LH*2 |
|
|
|
Rear door lock assembly RH*2 |
|
|
|
Wire harness or connector |
- |
|
|
Main body ECU (Multiplex network body ECU) |
|
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- *1: When the door unlock detection switch detects an unlock position signal after a door lock operation has been performed, a door lock operation will be performed 3 times.
- *2: for Double Cab
Data List / Active Test
DATA LIST / ACTIVE TEST
1. DATA LIST
HINT:
Using the Techstream to read the Data List allows the values or states of switches,
sensors, actuators and other items to be read without removing any p ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK DRIVER SIDE JUNCTION BLOCK AND MAIN BODY ECU (MULTIPLEX NETWORK BODY
ECU)
(a) Disconnect the MB main body ECU (multiplex network body ECU) connectors.
(b) Measure the ...
Other materials:
Installation
INSTALLATION
PROCEDURE
1. INSTALL TRANSMISSION FLOOR SHIFT ASSEMBLY
(a) Install the transmission floor shift assembly to the vehicle body with the
4 bolts.
Torque:
14 N·m {143 kgf·cm, 10 ft·lbf}
(b) Attach the 4 clamps to connect the wire harness to the transmission floor
shift assembl ...
Black Screen
PROCEDURE
1.
CHECK DISPLAY SETTING
(a) Check that the display is not in "Screen Off" mode.
OK:
The display setting is not in "Screen Off" mode.
NG
CHANGE SCREEN TO SCREEN ON MODE
OK
...
Steering Pad Switch Circuit
DESCRIPTION
This circuit sends an operation signal from the steering pad switch assembly
to the navigation receiver assembly.
If there is an open in the circuit, the audio system cannot be operated using
the steering pad switch assembly.
If there is a short in the circuit, the same condition ...