Toyota Tacoma 2015-2018 Service Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use these procedures to troubleshoot the lane departure alert system.
- *: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
INSPECT BATTERY VOLTAGE |
(a) Measure the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, replace or recharge the battery before proceeding to the next step.
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3. |
CHECK CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here .gif)
OK:
CAN communication system is functioning normally.
| NG | .gif) |
GO TO CAN COMMUNICATION SYSTEM |
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4. |
CHECK FOR DTCs |
(a) Check for DTCs and note any codes that are output.
Click here
(b) Clear the DTCs.
Click here
(c) Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs.
Click here
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Result |
Proceed to |
|---|---|
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DTCs are not output |
A |
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DTCs are output |
B |
| B | |
GO TO DTC CHART |
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5. |
PROBLEM SYMPTOMS TABLE |
HINT:
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 |
| B | |
GO TO STEP 8 |
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6. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Terminals of ECU
Click here
(b) Data List / Active Test
Click here
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7. |
ADJUST, REPAIR OR REPLACE |
NOTICE:
- When the millimeter wave radar sensor assembly is replaced with a new
one, adjustment of the radar sensor beam axis must be performed.
Click here
- When the forward recognition camera is replaced with a new one, adjustment
of the forward recognition camera optical axis must be performed.
Click here
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8. |
CONFIRMATION TEST |
| NEXT | |
END |
System Diagram
SYSTEM DIAGRAM
Communication Table
Sender ECU
Receiver ECU
Signal
Line
*1: for Vacuum Brake Booster
*2: for Hydraulic Brake Booster
...
Operation Check
OPERATION CHECK
CHECK LANE DEPARTURE ALERT MAIN SWITCH
(a) Check the lane departure alert main switch (steering pad switch assembly)
on/off operation.
(1) Turn the ignition switch to ON.
(2) Con ...
Other materials:
Removal
REMOVAL
PROCEDURE
1. PRECAUTION
CAUTION:
Be sure to read Precaution thoroughly before servicing (See page
).
NOTICE:
After turning the ignition switch off, waiting time may be required before disconnecting
the cable from the negative (-) battery terminal. Therefore, make sure to read the
...
Operation Check
OPERATION CHECK
1. MALFUNCTION DISPLAY (MULTI-INFORMATION DISPLAY)
(a) Open circuit indication
(1) If there is an open circuit between a No. 1 ultrasonic sensor and the clearance
warning ECU assembly or a sensor is malfunctioning, the malfunction is displayed
as shown in the illustration.
...
Fuel Receiver Gauge Malfunction
DESCRIPTION
The meter CPU uses the fuel sender gauge assembly to determine the level of the
fuel in the fuel tank. The resistance of the fuel sender gauge will vary between
approximately 13.5 Ω with the float at the full position, and 414.5 Ω with the float
at the empty position. The meter ...