| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM1000000024XS2 |
| Model Year Start: 2023 | Model: GR Corolla | Prod Date Range: [09/2022 - ] |
| Title: ACOUSTIC VEHICLE ALERTING SYSTEM: ACOUSTIC VEHICLE ALERTING SYSTEM: HOW TO PROCEED WITH TROUBLESHOOTING; 2023 - 2025 MY Corolla Corolla Hatchback Corolla HV GR Corolla [09/2022 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the acoustic vehicle alerting system.
- *: Use the GTS.
PROCEDURE
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1. |
VEHICLE BROUGHT TO WORKSHOP |
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2. |
CUSTOMER PROBLEM ANALYSIS AND SYMPTOM CHECK |
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 auxiliary battery voltage with the ignition 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 CAN COMMUNICATION SYSTEM* |
(a) Using the GTS, check for CAN communication system DTCs.
Click here
![2023 MY Corolla Corolla HV [09/2022 - 11/2022]; 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* |
(a) Check for DTCs.
Body Electrical > Acoustic Vehicle Alerting System > Trouble Codes
|
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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6. |
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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7. |
OVERALL ANALYSIS AND TROUBLESHOOTING* |
(a) Operation Check
Click here
(b) Data List / Active Test
Click here
(c) Terminals of ECU
Click here
(d) Inspection
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8. |
REPAIR OR REPLACE |
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9. |
CONFIRMATION TEST |
| NEXT |
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END |
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