| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000001918Q |
| Model Year Start: 2018 | Model: Sienna | Prod Date Range: [11/2017 - ] |
| Title: CRUISE CONTROL: CRUISE CONTROL SYSTEM: PROBLEM SYMPTOMS TABLE; 2018 - 2020 MY Sienna [11/2017 - ] | ||
PROBLEM SYMPTOMS TABLE
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.
Cruise Control System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
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The cruise control system cannot be turned on using the cruise control main switch (ON-OFF button). |
Cruise control switch circuit |
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Cruise main indicator light circuit |
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Combination meter assembly |
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ECM |
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Vehicle speed cannot be set. (The cruise main indicator light illuminates (green) when the cruise control system is turned on using the cruise control main switch (ON-OFF button), but the cruise main indicator light goes out when the cruise control main switch is pushed to -/ SET.) |
Cruise control switch circuit |
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|
ECM |
|
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Vehicle speed cannot be set. (The cruise main indicator light illuminates (green) when the cruise control system is turned on using the cruise control main switch (ON-OFF button), and it remains illuminated when the cruise control main switch is pushed to -/SET.). |
Stop light switch circuit |
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Vehicle speed sensor circuit |
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Cruise control switch circuit |
|
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Transmission range sensor circuit |
|
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Combination meter assembly |
|
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|
ECM |
|
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Vehicle speed control by the cruise control system is automatically canceled after it has started. |
Stop light switch circuit |
|
|
Transmission control switch circuit (for UA80F) |
|
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Transmission control switch circuit (for UA80E) |
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Cruise control switch circuit |
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Vehicle speed sensor circuit |
|
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ECM |
|
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Pulling back on the cruise control main switch does not cancel vehicle speed control by the cruise control system. (The cruise main indicator light remains illuminated (green).) |
Cruise control switch circuit |
|
|
Combination meter assembly |
|
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|
ECM |
|
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Pulling back on the cruise control main switch does not cancel vehicle speed control by the cruise control system. (The cruise main indicator light goes out.) |
ECM |
|
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Vehicle speed control by the cruise control system is not canceled when vehicle speed drops below the low speed limit. (The cruise main indicator light remains illuminated (green).) |
Vehicle speed sensor circuit |
|
|
ECM |
|
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Vehicle speed control by the cruise control system is not canceled when vehicle speed drops below the low speed limit. (The cruise main indicator light goes out.) |
ECM |
|
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Depressing the brake pedal does not cancel vehicle speed control by the cruise control system. (The cruise main indicator light remains illuminated (green).) |
Stop light switch circuit |
|
|
Combination meter assembly |
|
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|
ECM |
|
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Depressing the brake pedal does not cancel vehicle speed control by the cruise control system. (The cruise main indicator light goes out.) |
ECM |
|
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Moving the shift lever does not cancel vehicle speed control by the cruise control system. (The cruise main indicator light remains illuminated (green).) |
Transmission control switch circuit (for UA80F) |
|
|
Transmission control switch circuit (for UA80E) |
|
|
|
Combination meter assembly |
|
|
|
ECM |
|
|
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Moving the shift lever does not cancel vehicle speed control by the cruise control system. (The cruise main indicator light goes out.) |
ECM |
|
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Hunting (Speed is not constant.) |
Vehicle speed sensor circuit |
|
|
SFI system |
|
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The cruise control SET indicator light does not illuminate. (Vehicle speed can be set.) |
Cruise SET indicator light circuit |
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Combination meter assembly |
|
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|
ECM |
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![2017 - 2020 MY Sienna [08/2016 - ]; CRUISE CONTROL: CRUISE CONTROL SYSTEM: Cruise Control Switch Circuit](/t3Portal/stylegraphics/info.gif)
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