THEFT DETERRENT SYSTEM > PROBLEM SYMPTOMS TABLE

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HINT:
  1. 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.
  2. Inspect the fuse and relay before investigating the suspected areas shown in the table below.


Theft Deterrent System 
Symptom
Suspected Area
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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*2
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Door courtesy switch circuit
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Back door lock
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Engine hood courtesy switch circuit
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Certification ECU*1
-
If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU
-
Security indicator light does not blink when theft deterrent system is set
Security indicator light circuit
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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 on*2
Ignition switch circuit
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Unlock warning switch circuit
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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 a door is open
Door courtesy switch circuit
 Click here
If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU
-
Vehicle horn do not sound while theft deterrent system is in warning operation
Horn circuit
 Click here
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
-
Turn signal flasher
 Click here
If the symptom(s) still occur after the above areas are 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
 Click here
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
-
Turn signal flasher
 Click here
If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU
-
  1. *1: w/ Entry and Start System
  2. *2: w/o Entry and Start System