| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000WPI1 |
| Model Year Start: 2016 | Model: Sienna | Prod Date Range: [12/2015 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM(for Entry Function): HOW TO PROCEED WITH TROUBLESHOOTING; 2016 - 2020 MY Sienna [12/2015 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the smart key system.
- *: Use the Techstream.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS |
HINT:
- In 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.
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The following 5 items are important points in the problem analysis:
What
Vehicle model, system name
When
Date, time, occurrence frequency
Where
Road conditions
Under what conditions?
Running 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
If the voltage is below 11 V, recharge or replace the battery before proceeding to the next step.
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4. |
INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Use the Techstream to check if the CAN communication system is functioning normally.
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Result |
Proceed to |
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ECU connected, communication line is functioning normally. |
A |
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ECU connected, communication line is malfunctioning. |
B |
| B |
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GO TO CAN COMMUNICATION SYSTEM
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5. |
INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM (LIN)* |
(a) Use the Techstream to check if the LIN communication system (LIN) is functioning normally.
Click here
![2016 - 2020 MY Sienna [12/2015 - ]; NETWORKING: LIN COMMUNICATION SYSTEM: DTC CHECK / CLEAR](/t3Portal/stylegraphics/info.gif)
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Result |
Proceed to |
|---|---|
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LIN DTC is not output. |
A |
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LIN DTC is output. |
B |
| B |
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GO TO LIN COMMUNICATION SYSTEM
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6. |
CHECK FOR DTC* |
(a) Check for DTCs and note any codes that are output.
(b) Clear the DTCs.
(c) Recheck for DTCs. Based on the DTCs output, try to cause the same steering lock system DTC, wireless door lock control system DTC or smart key system (for start function) DTC to be output by simulating the symptoms indicated by theDTCs.
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Result |
Proceed to |
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DTC is not output. |
A |
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Steering lock system DTC is output. |
B |
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Engine immobiliser system DTC is output. |
C |
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Wireless door lock control system DTC is output. |
D |
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Smart key system (for start function) DTC is output. |
E |
| B |
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| C |
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GO TO ENGINE IMMOBILISER SYSTEM
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| D |
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| E |
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7. |
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 |
| B |
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8. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check
Click here
(b) Data List / Active Test
Click here
(c) Terminals of ECU
Click here
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9. |
REPAIR OR REPLACEMENT |
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10. |
CONFIRMATION TEST |
| NEXT |
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END |
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