| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001GTP0 |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - ] |
| Title: WIPER / WASHER: WIPER AND WASHER SYSTEM (for HV Model): HOW TO PROCEED WITH TROUBLESHOOTING; 2020 - 2025 MY Corolla Corolla HV [01/2019 - ] | ||
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HOW TO PROCEED WITH TROUBLESHOOTING |
CAUTION / NOTICE / HINT
HINT:
- Use the following procedure to troubleshoot the wiper and washer 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 auxiliary battery voltage with 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
![2020 MY Corolla Corolla HV [01/2019 - 04/2020]; 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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GO TO CAN COMMUNICATION SYSTEM
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5. |
CHECK FOR DTC* |
(a) Check for DTCs.
Body Electrical > Main Body > 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 DIAGNOSTIC TROUBLE CODE CHART
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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) Terminals of ECU
Click here
(c) Data List / Active Test
Click here
(d) Inspection
(e) On-vehicle inspection
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8. |
ADJUST, REPAIR OR REPLACE |
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9. |
CONFIRMATION TEST |
| NEXT |
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END |
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