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:
Clutch Pedal Switch
On-vehicle Inspection
ON-VEHICLE INSPECTION
PROCEDURE
1. CHECK CLUTCH START SYSTEM
(a) Check that the engine does not start when the clutch pedal is released.
(b) Check that the engine starts when the clutch pedal is fully depressed.
If necessary, replace the clutch start switch assembly.
...
Display does not Dim when Light Control Switch is Turned ON
PROCEDURE
1.
CHECK IMAGE QUALITY SETTING
(a) Display the "Display" screen.
(b) Turn the light control switch to the tail or head position.
(c) Check if "Day Mode" on the display adjustment screen is on.
OK:
"Day Mode" setting is of ...
A-TRAC Indicator Light Remains ON
DESCRIPTION
This is the A-TRAC main switch circuit. When the A-TRAC switch is turned on with
the transfer in L4, the A-TRAC function is available and the A-TRAC indicator light
illuminates.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
When replacing the skid control ECU (master ...