| Last Modified: 08-21-2023 | 6.11:8.1.0 | Doc ID: RM100000001AOTW |
| Model Year Start: 2019 | Model: Avalon HV | Prod Date Range: [04/2018 - 08/2021] |
| Title: EXTERIOR PANELS / TRIM: GRILLE SHUTTER SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2019 - 2021 MY Avalon Avalon HV [04/2018 - 08/2021] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the grille shutter 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.
-
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 auxiliary battery voltage with the power switch off.
Standard Voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the auxiliary 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. |
CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* |
(a) Using the Techstream, check for CAN communication system DTCs.
Click here
![2019 - 2020 MY Avalon HV [04/2018 - 08/2020]; NETWORKING: CAN COMMUNICATION SYSTEM (for HV 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. |
CHECK FOR DTC* (SFI SYSTEM) |
(a) Check for DTCs.
Powertrain > Engine > 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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GO TO SFI SYSTEM
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6. |
CHECK FOR DTC* (GRILLE SHUTTER SYSTEM) |
(a) Check for DTCs.
Body Electrical > Grille Shutter > 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) Terminals of ECU
Click here
(b) Data List / Active Test
Click here
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9. |
REPAIR OR REPLACE |
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10. |
CHECK FOR DTC* (GRILLE SHUTTER SYSTEM) |
(a) Check for DTCs.
Body Electrical > Grille Shutter > 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 |
| A |
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END |
| B |
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