| Last Modified: 05-13-2024 | 6.11:8.1.0 | Doc ID: RM100000001GL8P |
| Model Year Start: 2020 | Model: Corolla | Prod Date Range: [01/2019 - 09/2022] |
| Title: HORN: HORN SYSTEM (for HV Model): PROBLEM SYMPTOMS TABLE; 2020 - 2022 MY Corolla Corolla HV [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 HV [01/2019 - 04/2020]; THEFT DETERRENT / KEYLESS ENTRY: SMART KEY SYSTEM (for Start Function, HV Model): REGISTRATION](/t3Portal/stylegraphics/info.gif)
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.
Horn System
|
Symptom |
Suspected Area |
Link |
|---|---|---|
|
Horn does not sound |
HORN fuse |
- |
|
HORN relay |
|
|
|
Horn button assembly |
|
|
|
Spiral cable sub-assembly |
|
|
|
Instrument panel junction block assembly |
|
|
|
Harness or connector |
- |
|
|
Horn sounds all the time |
HORN relay |
|
|
Horn button assembly |
|
|
|
Spiral cable sub-assembly |
|
|
|
Instrument panel junction block assembly |
|
|
|
Main body ECU (Multiplex network body ECU) |
|
|
|
Harness or connector |
- |
|
|