Toyota Tacoma (2015-2018) Service Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
*: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS CHECK |
HINT:
- In troubleshooting, confirm that the problem symptoms have been accurately identified. Preconceptions should be discarded in order to make an accurate judgment. To clearly understand what the problem symptoms are, it is extremely important to ask the customer about the problem and the conditions at the time the malfunction occurred.
- Gather as much information as possible for reference. Past problems that seem unrelated may also help in some cases.
|
What |
Vehicle model, system name |
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When |
Date, time, occurrence frequency |
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Where |
Road conditions |
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Under what conditions? |
Running conditions, driving conditions, weather conditions |
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How did it happen? |
Problem symptoms |
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3. |
INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
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|
4. |
INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Check if CAN communication DTCs are output.
Click here .gif)
|
Result |
Proceed to |
|---|---|
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CAN communication DTCs are not output |
A |
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CAN communication DTCs are output |
B |
| B | .gif) |
GO TO CAN COMMUNICATION SYSTEM |
|
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5. |
CHECK FOR DTC* |
HINT:
Refer to DTC Check / Clear.
Click here
|
Result |
Proceed to |
|---|---|
|
DTCs are not output |
A |
|
DTCs are output |
B |
| B | |
GO TO DTC CHART |
|
|
6. |
REFER TO PROBLEM SYMPTOMS TABLE |
HINT:
Refer to Problem Symptoms Table.
Click here
|
Result |
Proceed to |
|---|---|
|
Malfunctioning parts are not confirmed |
A |
|
Malfunctioning parts are confirmed |
B |
| B | |
GO TO STEP 12 |
|
|
7. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
HINT:
Refer to Data List / Active Test.
Click here
|
Result |
Proceed to |
|---|---|
|
Malfunctioning parts are not confirmed |
A |
|
Malfunctioning parts are confirmed |
B |
| B | |
GO TO STEP 12 |
|
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8. |
CHECK ECM CIRCUIT |
HINT:
Refer to Terminals of ECM.
Click here
| NG | |
GO TO STEP 12 |
|
|
9. |
CHECK FOR INTERMITTENT PROBLEMS |
HINT:
Refer to Symptom Simulation.
Click here
|
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10. |
CONDUCT PARTS INSPECTION |
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11. |
IDENTIFY PROBLEM |
|
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12. |
ADJUST AND/OR REPAIR |
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13. |
CONDUCT CONFIRMATION TEST |
| NEXT | |
END |
System Diagram
SYSTEM DIAGRAM
...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
Charging System
Symptom
Suspected Area
See page
Charging System Warning Displayed
Battery
...
Other materials:
Components
COMPONENTS
ILLUSTRATION
*1
FRONT ARMREST BASE UPPER PANEL SUB-ASSEMBLY
*2
FRONT DOOR GLASS INNER WEATHERSTRIP
*3
FRONT DOOR INSIDE HANDLE BEZEL PLUG
*4
FRONT DOOR INSIDE HANDLE SUB-ASSEMBLY
...
TS and CG Terminal Circuit
DESCRIPTION
In Test Mode (signal check), a malfunction in the speed sensor that cannot be
detected when the vehicle is stopped can be detected while driving.
Sensor check mode can be entered by connecting terminals TS and CG of the DLC3
and turning the ignition switch from off to ON.
WIRING D ...
Speaker Circuit
DESCRIPTION
If there is a short in a speaker circuit, the stereo component amplifier assembly*1
or navigation receiver assembly*2 detects it and stops output to the speakers.
Thus sound cannot be heard from the speakers even if there is no malfunction
in the stereo component amplifier assembly ...
