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 |
|---|---|---|
|
Oil leak from front differential |
Oil (level too high or wrong grade) |
|
|
Front differential side gear shaft oil seal (worn or damaged) |
|
|
|
Companion flange (loose or damaged) |
|
|
|
Oil leak from rear differential |
Oil (level too high or wrong grade) |
|
|
Rear differential carrier oil seal (worn or damaged) |
|
|
|
Companion flange (loose or damaged) |
|
|
|
Oil leak from front drive pinion shaft |
Oil (level too high or wrong grade) |
|
|
Front differential carrier oil seal (worn or damaged) |
|
|
|
Companion flange (loose or damaged) |
|
|
|
Oil leak from rear drive pinion shaft |
Oil (level too high or wrong grade) |
|
|
Rear differential carrier oil seal (worn or damaged) |
|
|
|
Companion flange (loose or damaged) |
|
|
|
After differential lock switch is operated, rear differential lock indicator light remains off or illuminated |
ECU power source circuit |
|
|
Differential lock switch |
|
|
|
4 wheel drive control ECU |
||
|
CAN communication system |
||
|
Combination meter assembly |
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How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
Use the following procedure listed to troubleshoot the differential
system (w/ Differential Lock).
*: Use the Techstream.
PROCEDURE
1 ...
System Description
SYSTEM DESCRIPTION
1. DESCRIPTION
The differential system (w/ Differential Lock) directly connects the
rear left and right wheels so that even if one wheel slips while driving
where d ...
Other materials:
License Plate Light Assembly
Components
COMPONENTS
ILLUSTRATION
Removal
REMOVAL
CAUTION / NOTICE / HINT
HINT:
Use the same procedure for both the LH and RH sides.
The procedure described below is for the LH side.
PROCEDURE
1. REMOVE LICENSE PLATE LIGHT ASSEMBLY
(a) Disconnect the con ...
Poor Sound Quality in All Modes (Low Volume)
PROCEDURE
1.
CHECK AUDIO SETTINGS
(a) Set "Treble", "Mid" and "Bass" to the initial values and check that sound
is normal.
OK:
Malfunction disappears.
HINT:
Sound quality adjustment measures vary according to the type of amplifie ...
Reassembly
REASSEMBLY
CAUTION / NOTICE / HINT
NOTICE:
When installing the hood bulge protector, heat the hood bulge surface
using the infrared light.
Do not heat the hood bulge excessively.
Item
Temperature
Hood Bulge
...
