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 |
|---|---|---|
|
Wireless control function and entry function do not operate |
Proceed to "All Door Entry Lock / Unlock Functions and Wireless Functions do not Operate" |
|
|
Wireless control function does not operate but entry function operates |
Electrical key transmitter sub-assembly |
- |
|
Only answer-back function does not operate normally |
Proceed to "No answer-back" |
|
|
Only automatic lock function does not operate normally |
Perform operation check |
|
|
Lighting system (front door courtesy light switch circuit) |
|
|
|
Lighting system (rear door courtesy light switch circuit) |
|
|
|
Main body ECU (multiplex network body ECU) |
- |
|
|
Only illuminated entry function does not operate |
Perform operation check |
|
|
Lighting system |
|
|
|
Main body ECU (multiplex network body ECU) |
- |
|
|
Only door ajar warning function does not operate |
Perform operation check |
|
|
Lighting system (front door courtesy light switch circuit) |
|
|
|
Lighting system (rear door courtesy light switch circuit) |
|
|
|
Main body ECU (multiplex network body ECU) |
- |
|
|
Only panic alarm function does not operate |
Perform operation check |
|
|
Lighting system (interior lights) |
|
|
|
Lighting system (hazard warning lights) |
|
|
|
Horn system |
|
|
|
Main body ECU (multiplex network body ECU) |
- |
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Operation Check
OPERATION CHECK
1. NOTICE WHEN CHECKING FOLLOWING
(a) Wireless door lock/unlock function:
This wireless door lock control function operates only when the following 3 conditions
are met:
(1) The ...
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
The ECU stores trouble codes when malfunctions occur.
The diagnostic system allows for reading of the trouble codes from the DLC3.
Use the Techstream to help diagno ...
Other materials:
Diagnosis System
DIAGNOSIS SYSTEM
1. DESCRIPTION
(a) Smart key system (for entry function) data and Diagnostic Trouble Codes (DTCs)
can be read through the vehicle Data Link Connector 3 (DLC3). In some cases, a malfunction
may be occurring in the smart key system. When the system seems to be malfunctioning,
...
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 parts. This non-intrusive
inspection can be very useful because intermittent conditions or signals ...
Installation
INSTALLATION
PROCEDURE
1. INSTALL REAR SEAT 3 POINT TYPE OUTER BELT ASSEMBLY
(a) Before installing the rear seat 3 point type outer belt assembly,
check the ELR function.
Text in Illustration
*a
Unlock
*b
...
