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) |
|
.gif)
- *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:
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)
(a) Disconnect the C27 and C29 certification ECU (smart key ECU assembly) connectors.
(b) Measure the voltage and resistance according to the value(s) in the table
below.
HINT:
Measure the values on the wire harness side w ...
Diagnostic Trouble Code Chart
DIAGNOSTIC TROUBLE CODE CHART
Forward Recognition Camera System
DTC No.
Detection Item
Link
C1A0A
Front Radar Sensor Region Code Mismatch
C1A47
Steering Angle Sensor
...
Installation
INSTALLATION
PROCEDURE
1. INSPECT PROPELLER SHAFT WITH CENTER BEARING ASSEMBLY (with Grease Fitting)
Text in Illustration
*1
Grease Fitting
-
-
*a
View A
*b
Front Side
HINT:
When replacing t ...
