| Last Modified: 04-05-2023 | 6.11:8.1.0 | Doc ID: RM100000000YS0R |
| Model Year Start: 2017 | Model: Sienna | Prod Date Range: [08/2016 - ] |
| Title: THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: PROBLEM SYMPTOMS TABLE; 2017 - 2020 MY Sienna [08/2016 - ] | ||
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.
Theft Deterrent System
|
Symptom |
Suspected Area |
See page |
|---|---|---|
|
Theft deterrent system cannot be set |
Security indicator light circuit |
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|
ECU power source circuit |
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|
Unlock warning switch circuit* |
|
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|
Front door lock assembly |
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|
Slide door lock assembly |
|
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|
Back door lock assembly |
|
|
|
Door courtesy switch circuit |
|
|
|
Back door lock assembly (Back door courtesy switch) |
|
|
|
Engine hood courtesy switch circuit |
|
|
|
If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU |
|
|
|
Security indicator does not blink when theft deterrent system is set |
Security indicator light circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Alarm sounding state cannot be canceled when ignition switch is turned to ON* |
Ignition switch circuit |
|
|
Unlock warning switch circuit |
|
|
|
If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU |
|
|
|
Theft deterrent system can be set even when door is open |
Door courtesy switch circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Theft deterrent system can be set even when engine hood is open. |
Engine hood courtesy switch circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Vehicle horns (low pitched, high pitched) do not sound while theft deterrent system is in warning operation |
Horn circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Headlights do not blink while theft deterrent system is in warning operation |
Headlight relay circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Taillights do not blink while theft deterrent system is in warning operation |
Taillight relay circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Hazard warning lights do not flash while theft deterrent system is in warning operation |
Wire harness or connector |
- |
|
Combination meter assembly |
|
|
|
If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU |
|
|
|
Interior light does not light up while theft deterrent system is in warning operation |
Interior light circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Security horn does not sound while theft deterrent system is in warning operation |
Security horn circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Headlights blink even when theft deterrent system is not set |
Headlight relay circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Taillights blink even when theft deterrent system is not set |
Taillight relay circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
|
|
|
Hazard warning lights flash even when theft deterrent system is not set |
Wire harness or connector |
- |
|
Combination meter assembly |
|
|
|
If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU |
|
|
|
Interior light comes on even when theft deterrent system is not set |
Interior light circuit |
|
|
If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU |
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![2016 - 2020 MY Sienna [12/2015 - ]; THEFT DETERRENT / KEYLESS ENTRY: THEFT DETERRENT SYSTEM: Security Indicator Light Circuit](/t3Portal/stylegraphics/info.gif)
*: w/o Smart Key System
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