Toyota Tacoma (2015-2018) Service Manual: How To Proceed With Troubleshooting
CAUTION / NOTICE / HINT
HINT:
- Use this procedure to troubleshoot the engine immobiliser 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, recharge or replace the battery before proceeding to the next step.
HINT:
A simple method to determine whether the battery is discharged is to operate the horn.
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3. |
TURN ENGINE SWITCH ON (IG) |
HINT:
If the engine switch cannot be turned on (IG), communication with the Techstream can be confirmed by connecting the Techstream to the vehicle and turning a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and vehicle begins.
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4. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
Click here .gif)
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Result |
Proceed to |
|---|---|
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CAN DTC is not output |
A |
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CAN DTC is output |
B |
| B | .gif) |
GO TO CAN COMMUNICATION SYSTEM |
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5. |
CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the LIN communication system is functioning normally.
Click here
|
Result |
Proceed to |
|---|---|
|
LIN DTC is not output |
A |
|
LIN DTC is output |
B |
| B | |
GO TO LIN COMMUNICATION SYSTEM |
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6. |
CHECK FOR DTC* |
(a) Check for DTCs and make a note of any codes that are output.
Click here
(b) Based on the DTCs output above, proceed to each diagnostic procedure.
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
SFI system DTC is output |
B |
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Steering lock system DTC is output |
C |
|
Engine immobiliser system DTC is output |
D |
| B | |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
| C | |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
| D | |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
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7. |
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 |
| B | |
GO TO STEP 9 |
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8. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Data List / Active Test
Click here
(b) Terminals of ECU
Click here
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9. |
REPAIR OR REPLACE |
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10. |
CHECK FOR DTC* |
(a) Clear the DTCs.
Click here
(b) Check for DTCs.
Click here
HINT:
Before checking for DTCs, perform the "DTC Output Confirmation Operation" of each diagnostic procedure.
Click here
|
Result |
Proceed to |
|---|---|
|
DTC is not output |
A |
|
Engine immobiliser system DTC is output |
B |
| A | |
END |
| B | |
GO TO DIAGNOSTIC TROUBLE CODE CHART |
System Diagram
SYSTEM DIAGRAM
...
Problem Symptoms Table
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the cause of problem symptoms.
If multiple suspected areas are listed, the potential causes of the symptoms
are lis ...
Other materials:
System Diagram
SYSTEM DIAGRAM
1. OVERALL CAN BUS DIAGRAM
(a) The CAN communication system is composed of 4 buses.
CAN Main Bus Line
Terminating Resistor
CAN Branch Line
*
Gateway Function Equipped ECU
...
Dtc Check / Clear
DTC CHECK / CLEAR
1. CHECK DTC
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Body Electrical / Trouble Codes.
(e) Check DTCs and then write them down.
HINT:
Refer to the Techstream operator's manual ...
Parts Location
PARTS LOCATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
ILLUSTRATION
...
