Toyota Venza: Problem Symptoms Table

Toyota Venza Service Manual / Theft Deterrent / Keyless Entry / Theft Deterrent System(w/o Smart Key System) / Problem Symptoms Table

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
	ECU power source circuit
	Unlock warning switch circuit
	Front door lock assembly
	Rear door lock assembly
	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 (driver side junction block assembly)
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 (driver side junction block assembly)
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 (driver side junction block assembly)
Theft deterrent system can be set even when door is open	Door courtesy switch circuit
Theft deterrent system can be set even when door is open	If the symptom(s) still occur after the above area is inspected and proved to be normal, replace the main body ECU (driver side junction block assembly)
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 (driver side junction block assembly)
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 (driver side junction block assembly)
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 (driver side junction block assembly)
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 (driver side junction block assembly)
Hazard warning lights do not flash while theft deterrent system is in warning operation	Wire harness or connector	-
	Turn signal flasher assembly
	If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (driver side junction block assembly)
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 (driver side junction block assembly)
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 (driver side junction block assembly)
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 (driver side junction block assembly)
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 (driver side junction block assembly)
Hazard warning lights flash even when theft deterrent system is not set	Wire harness or connector	-
	Turn signal flasher assembly
	If the symptom(s) still occur after the above areas are inspected and proved to be normal, replace the main body ECU (driver side junction block assembly)
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 (driver side junction block assembly)

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DIAGNOSIS SYSTEM 1. DESCRIPTION The ECU stores trouble codes when trouble occurs on the vehicle. The diagnostic system allows for reading of the trouble codes from the DLC3. Use the Techstream to ...

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