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 |
|---|---|---|
|
When ignition switch in ON position, SRS warning light occasionally comes on approximately 6 seconds after engine start. |
SRS warning light circuit malfunction (SRS Warning Light Remains ON). |
|
|
SRS warning light always comes on even when DTC not set. |
SRS warning light circuit malfunction (SRS Warning Light Remains ON). |
|
|
With ignition switch in ON position, SRS warning light does not come on. |
SRS warning light circuit malfunction (SRS Warning Light does not Come On). |
|
|
Although SRS warning light operates normally, neither DTCs normal system indication displayed. |
TC and CG Terminal Circuit |
|
|
Although terminals TC and CG not connected, DTC or normal system indication displayed. |
TC and CG Terminal Circuit |
|
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the Techstream.
PROCEDURE
1.
VEHICLE BROUGHT TO WORKSHOP
NEXT
...
System Description
SYSTEM DESCRIPTION
1. SRS (SUPPLEMENTAL RESTRAINT SYSTEM) AIRBAG SYSTEM
(a) General Description
(1) The SRS airbag system consists of the following airbag and main components:
Airbag
...
Other materials:
System Description
SYSTEM DESCRIPTION
1. SYSTEM DESCRIPTION
HINT:
The skid control ECU is built into the hydraulic brake booster.
(a) ABS (Anti-lock Brake System)
The ABS helps prevent the wheels from locking when the brakes are applied firmly
or when braking on a slippery surface.
(b) Multi-terrain Anti-lock ...
Seat Position Sensor
Components
COMPONENTS
ILLUSTRATION
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. INSPECT SEAT POSITION AIRBAG SENSOR (for Vehicle not Involved in Collision)
(a) Perform a diagnostic system check (See page
).
2. INSPECT SEAT POSITION AIRBAG SENSOR (for Vehicle Involved in C ...
Inspection
INSPECTION
PROCEDURE
1. INSPECT BRAKE VACUUM CHECK VALVE ASSEMBLY
(a) Check that there is ventilation from the booster to the engine, and
no ventilation from the engine to the booster.
If the results are not as specified, replace the vacuum check valve.
...
