Toyota Tacoma 2015-2018 Service Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the audio and visual system.
- *: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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|
2. |
CUSTOMER PROBLEM ANALYSIS |
- When 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 somecases.
- The following 5 items are important points in problemanalysis:
What
Vehicle model, system name
When
Date, time, occurrence frequency
Where
Road conditions
Under what conditions?
Driving conditions, weather conditions
How did it happen?
Problem symptoms
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|
3. |
INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage with ignition switch off.
Standard voltage:
11 to 14 V
HINT:
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
|
|
4. |
CHECK CABIN |
(a) Check that condensation is not likely to occur in the cabin, and that the temperature is not high or extremely low in the cabin.
OK:
Condensation is not likely being produced and the temperature is not high or extremely low.
HINT:
- A humid cabin and a rapid change in temperature may lead to condensation. Condensation in the cabin may cause a short circuit.
- The audio and visual system may not operate normally when the temperature is -20°C (-4°F) or lower, or 65°C (149°F) or higher.
| NG |  |
SET CABIN TO APPROPRIATE TEMPERATURE |
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5. |
CHECK FOR DTC* |
(a) Refer to DTC Check/Clear.
Click here .gif)
|
Result |
Proceed to |
|---|---|
|
DTCs are output. |
A |
|
DTCs are not output. |
B |
| B | |
GO TO STEP 9 |
|
|
6. |
DTC CLEAR* |
(a) Refer to DTC Check/Clear.
Click here
HINT:
The present DTCs may not indicate actual malfunctions depending on the vehicle operating conditions.
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7. |
RECHECK FOR DTC* |
(a) Refer to DTC Check/Clear.
Click here
|
Result |
Proceed to |
|---|---|
|
DTCs are output. |
A |
|
DTCs are not output. |
B |
HINT:
- Even if the malfunction symptom is not confirmed, check for DTCs. This is because the system stores history DTCs.
- If more information is needed, perform a recheck using the "System Check Mode" screen after rechecking for DTCs using the Techstream.
- Check the DTCs and inspect the area that the code indicates.
| B | |
GO TO STEP 9 |
|
|
8. |
DIAGNOSTIC TROUBLE CODE CHART |
(a) Find the output code in Diagnostic Trouble Code Chart.
Click here
| NEXT | |
GO TO STEP 11 |
|
9. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
|
Result |
Proceed to |
|---|---|
|
Fault is not listed in Problem Symptoms Table. |
A |
|
Fault is listed in Problem Symptoms Table. |
B |
HINT:
If the symptom does not recur and no DTCs are output, attempt to reproduce the symptoms.
Click here
| B | |
GO TO STEP 11 |
|
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10. |
PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM |
(a) Refer to Terminals of ECU.
Click here
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11. |
CHECK CIRCUIT |
(a) Adjust, repair or replace as necessary.
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12. |
RECHECK FOR DTC* |
(a) After clearing DTCs, recheck for DTCs.
|
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13. |
PERFORM CONFIRMATION TEST |
| NEXT | |
END |
System Description
SYSTEM DESCRIPTION
1. TOUCH SWITCH OUTLINE
Touch switches are touch-sensitive (interactive) switches operated by touching
the screen. When a switch is pressed, the outer film bends in to contact t ...
Operation Check
OPERATION CHECK
1. CHECK PANEL & STEERING SWITCH
HINT:
The radio and display receiver assembly panel switches and steering
switches are checked in the following procedure.
Illus ...
Other materials:
Test Mode Procedure
TEST MODE PROCEDURE
1. TEST MODE (SIGNAL CHECK MODE) PROCEDURE
HINT:
When entering test mode (signal check mode), the tire pressure warning
ECU and receiver stores all the test mode (signal check mode) DTCs first.
After the tire pressure warning ECU and receiver completes the signa ...
Check Bus 5 Line for Short to GND
DESCRIPTION
There may be a short circuit between one of the CAN bus lines and GND when there
is no resistance between terminal 15 (CA5H) of the central gateway ECU (network
gateway ECU) and terminal 4 (CG) of the DLC3, or terminal 16 (CA5L) of the central
gateway ECU (network gateway ECU) and ...
Parts Location
PARTS LOCATION
ILLUSTRATION
*A
for Vacuum Brake Booster
*B
for Hydraulic Brake Booster
*1
SKID CONTROL ECU (BRAKE ACTUATOR ASSEMBLY)
*2
SKID CONTROL ECU (MASTER CYLINDER SOLENOID)
*3
...