| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001B3XP |
| Model Year Start: 2019 | Model: Avalon | Prod Date Range: [04/2018 - ] |
| Title: SLIDING ROOF / CONVERTIBLE: SLIDING ROOF SYSTEM (for Gasoline Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2019 - 2022 MY Avalon [04/2018 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the sliding roof 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 for 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. |
PRE-CHECK |
(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.
(b) Check the fuses and relays.
(c) Check the connector connections and terminals to make sure that there are no abnormalities such as loose connections, deformation, etc.
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4. |
INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs.
Click here
![2019 - 2020 MY Avalon [04/2018 - 08/2020]; NETWORKING: CAN COMMUNICATION SYSTEM (for Gasoline Model): DIAGNOSIS SYSTEM](/t3Portal/stylegraphics/info.gif)
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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 |
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5. |
INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for LIN communication system DTCs.
Click here
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Result |
Proceed to |
|---|---|
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LIN DTCs are not output |
A |
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LIN DTCs are output |
B |
| B |
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6. |
CHECK FOR DTC* |
(a) Check for DTCs and make a note of any codes that are output.
Click here
Body Electrical > Sliding Roof > Trouble Codes
(b) Clear the DTCs.
Body Electrical > Sliding Roof > Clear DTCs
(c) Recheck for DTCs.
Body Electrical > Sliding Roof > Trouble Codes
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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 |
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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) Terminals of ECU
Click here
(c) Data List / Active Test
Click here
(d) Inspection
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9. |
ADJUST, REPAIR OR REPLACE |
(a) Check if the sliding roof drive gear assembly has been replaced, or the sliding roof glass sub-assembly or sliding roof drive cable sub-assembly has been adjusted, or removed and installed.
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Result |
Proceed to |
|---|---|
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The sliding roof drive gear assembly has been replaced, or the sliding roof glass sub-assembly or sliding roof drive cable sub-assembly has been adjusted, or removed and installed. |
A |
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The sliding roof drive gear assembly has not been replaced, and the sliding roof glass sub-assembly and sliding roof drive cable sub-assembly have not been adjusted, or removed and installed. |
B |
| B |
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10. |
INITIALIZE SLIDING ROOF SYSTEM |
(a) Initialize the sliding roof ECU (sliding roof drive gear assembly).
Click here
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11. |
CONFIRMATION TEST |
| NEXT |
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END |
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