Toyota Tacoma (2015-2018) Service Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the navigation system.
- *: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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.gif)
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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 some cases.
- The following 5 items are important points in problem analysis:
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.
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.
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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 navigation system may not operate normally when the temperature is -20°C (-4°F) or lower, or 65°C (149°F) or higher.
| NG | .gif) |
SET CABIN TO APPROPRIATE TEMPERATURE |
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5. |
CHECK NAVIGATION SYSTEM NORMAL CONDITION |
(a) Refer to Check System Normal Condition.
Click here .gif)
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Result |
Proceed to |
|---|---|
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Symptom is not normal operation |
A |
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Symptom is normal operation |
B |
| B | |
SYMPTOM IS NORMAL OPERATION |
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6. |
CHECK CAN COMMUNICATION SYSTEM* |
(a) Check if CAN communication system DTCs are output.
Click here
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Result |
Proceed to |
|---|---|
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CAN DTCs are not output. |
A |
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CAN DTCs are output. |
B |
| B | |
GO TO CAN COMMUNICATION SYSTEM |
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7. |
CHECK FOR DTC* |
(a) Refer to DTC Check/Clear.
Click here
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Result |
Proceed to |
|---|---|
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DTCs are output |
A |
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DTCs are not output |
B |
HINT:
If the system cannot enter diagnostic mode, inspect the AVC-LAN and all the components that connect to the AVC-LAN for short circuits and repair or replace the problem part.
Click here
| B | |
GO TO STEP 11 |
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8. |
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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9. |
RECHECK FOR DTC* |
(a) Refer to DTC Check/Clear.
Click here
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Result |
Proceed to |
|---|---|
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DTCs are output |
A |
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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 11 |
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10. |
DIAGNOSTIC TROUBLE CODE CHART |
(a) Find the output code in Diagnostic Trouble Code Chart.
Click here
| NEXT | |
GO TO STEP 13 |
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11. |
CHECK SD CARD |
(a) Enter the "SD Check" screen. Refer to Check SD Card in Operation Check.
Click here
| NG | |
REPLACE SD CARD |
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12. |
PROBLEM SYMPTOMS TABLE |
(a) Refer to Problem Symptoms Table.
Click here
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Result |
Proceed to |
|---|---|
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Fault is not listed in Problem Symptoms Table |
A |
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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 13 |
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13. |
PERFORM TROUBLESHOOTING BASED ON MALFUNCTION SYMPTOM |
(a) Refer to Terminals of ECU.
Click here
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14. |
CHECK CIRCUIT |
(a) Adjust, repair or replace as necessary.
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15. |
RECHECK FOR DTC* |
(a) After clearing DTCs, recheck for DTCs.
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16. |
PERFORM CONFIRMATION TEST |
| NEXT | |
END |
System Description
SYSTEM DESCRIPTION
1. NAVIGATION SYSTEM OUTLINE
(a) Vehicle position tracking methods
It is essential that the navigation system correctly tracks the current vehicle
position and displays it on t ...
Operation Check
OPERATION CHECK
1. CHECK NAVIGATION SYSTEM NORMAL CONDITION
(a) If the symptom is applicable to any of the following, it is intended behavior,
and not a malfunction.
Symptom
...
Other materials:
Illumination Circuit
DESCRIPTION
Power is supplied to the radio and display receiver assembly and steering pad
switch assembly illumination when the light control switch is in the TAIL or HEAD
position.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
The vehicle is equipped with a Supplemental Restrain ...
Front Radar Sensor (C1A10)
DESCRIPTION
C1A10 is output when there is an internal malfunction in the millimeter wave
radar sensor assembly.
DTC No.
Detection Item
DTC Detection Condition
Trouble Area
MIL
C1A10
Front Radar Sensor
W ...
Sending Malfunction (Navigation to APGS) (U0073,U0100,U0140,U0155)
DESCRIPTION
These DTCs are stored when a malfunction occurs in the CAN communication circuit.
DTC No.
DTC Detection Condition
Trouble Area
U0073
CAN bus connection error
CAN communication system
U0100
...
