| Last Modified: 07-31-2024 | 6.11:8.1.0 | Doc ID: RM100000001GW2A |
| Model Year Start: 2020 | Model: GR Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: WIPER / WASHER: WIPER AND WASHER SYSTEM (for Gasoline Model): PROBLEM SYMPTOMS TABLE; 2020 - 2022 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2022] | ||
PROBLEM SYMPTOMS TABLE
NOTICE:
Before replacing the main body ECU (multiplex network body ECU), refer to Registration.*
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![2020 MY Corolla Corolla Hatchback GR Corolla [01/2019 - 09/2019]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, Gasoline Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
- *: w/ Smart Key System
HINT:
- Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Front Wiper System
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
Front wipers do not operate at all |
Proceed to "Wiper and Washer Switch Circuit" |
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|
Proceed to "Front Wiper Motor Circuit" |
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Main body ECU (Multiplex network body ECU) |
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Windshield wiper relay |
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Front wipers do not operate in LO |
Proceed to "Wiper and Washer Switch Circuit" |
|
|
Proceed to "Front Wiper Motor Circuit" |
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Windshield wiper relay |
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Front wipers do not operate in HI |
Proceed to "Wiper and Washer Switch Circuit" |
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Proceed to "Front Wiper Motor Circuit" |
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Windshield wiper relay |
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Front wipers do not operate in INT |
Proceed to "Wiper and Washer Switch Circuit" |
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Proceed to "Front Wiper Motor Circuit" |
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Windshield wiper relay |
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Front wipers do not operate in MIST |
Proceed to "Wiper and Washer Switch Circuit" |
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Windshield wiper relay |
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When the front wiper switch is in INT, the front wiper intermittent operation interval cannot be adjusted by the intermittent time adjustment switch* |
Proceed to "Wiper and Washer Switch Circuit" |
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Main body ECU (Multiplex network body ECU) |
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When the front wipers are operating in INT, the front wiper intermittent operation interval does not change according to changes in the vehicle speed* |
Main body ECU (Multiplex network body ECU) |
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Front wipers continuously operate in LO |
Proceed to "Wiper and Washer Switch Circuit" |
|
|
Windshield wiper relay |
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Front wipers continuously operate in HI |
Proceed to "Wiper and Washer Switch Circuit" |
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Windshield wiper relay |
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|
Front wipers continuously operate in INT |
Proceed to "Wiper and Washer Switch Circuit" |
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Front wipers do not move to the service position (wiper operation is normal) |
Main body ECU (Multiplex network body ECU) |
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When the front wiper switch is turned off, the front wipers do not move to the park position or stop in the wrong position |
Proceed to "Front Wiper Motor Circuit" |
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Check the automatic stop (park) position |
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Windshield wiper relay |
|
- *: w/ Intermittent Time Adjustment Switch
Rear Wiper System (w/ Rear Wiper System)
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
Rear wiper does not operate at all |
Proceed to "Wiper and Washer Switch Circuit" |
|
|
Proceed to "Rear Wiper Motor Circuit" |
|
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
Rear wiper does not operate in LO |
Proceed to "Wiper and Washer Switch Circuit" |
|
|
Proceed to "Rear Wiper Motor Circuit" |
|
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
Rear wiper does not operate in INT |
Proceed to "Wiper and Washer Switch Circuit" |
|
|
Proceed to "Rear Wiper Motor Circuit" |
|
|
|
Main body ECU (Multiplex network body ECU) |
|
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Rear wiper continuously operates in LO |
Proceed to "Wiper and Washer Switch Circuit" |
|
|
Main body ECU (Multiplex network body ECU) |
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Rear wiper continuously operates in INT |
Proceed to "Wiper and Washer Switch Circuit" |
|
|
Main body ECU (Multiplex network body ECU) |
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When the back door is opened, the rear wiper does not stop operating |
Check customize settings |
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Main body ECU (Multiplex network body ECU) |
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When the rear washer is operated, the rear wiper does not operate |
Check customize settings |
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When driving in reverse, the rear wiper does not operate |
Check customize settings |
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|
When the rear wiper switch is turned off, the rear wiper does not move to the park position or stops in the wrong position |
Proceed to "Rear Wiper Motor Circuit" |
|
|
Check the automatic stop (park) position |
|
Washer System
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
Windshield washer motor and pump assembly does not operate |
Proceed to "Wiper and Washer Switch Circuit" |
|
|
Proceed to "Washer Motor Circuit" |
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Windshield wiper relay |
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|
Front washers do not operate |
Proceed to "Wiper and Washer Switch Circuit" |
|
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Windshield wiper relay |
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Rear washer does not operate* |
Proceed to "Wiper and Washer Switch Circuit" |
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Windshield wiper relay |
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Washer fluid does not flow (Windshield washer motor and pump assembly is normal) |
Washer fluid |
- |
|
Washer hose and nozzle |
- |
- *: w/ Rear Wiper System
Washer Fluid Level Warning System (w/ Level Warning Switch)
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
"Windshield Washer Fluid Low" is displayed on the multi-information display when washer fluid level is not low |
Proceed to "Washer Fluid Level Warning Switch Circuit" |
|
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"Windshield Washer Fluid Low" is not displayed on the multi-information display when washer fluid level is low |
Washer fluid |
- |
|
Proceed to "Washer Fluid Level Warning Switch Circuit" |
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