Toyota Venza: Horn System

Toyota Venza Service Manual / Horn / Horn System

Precaution

PRECAUTION

NOTICE:

When disconnecting the cable from the negative (-) battery terminal, initialize the following system after the cable is reconnected.

System Name	See Procedure
Back Door Closer System
Power Back Door System

1. EXPRESSIONS OF IGNITION SWITCH

The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.

Expression	Switch Type
Expression	Ignition Switch (Position)	Engine Switch (Condition)
Ignition Switch off	LOCK	Off
Ignition Switch ON	ON	On (IG)
Ignition Switch ACC	ACC	On (ACC)
Engine Start	START	On (Start)

Parts Location

PARTS LOCATION

ILLUSTRATION

System Diagram

SYSTEM DIAGRAM

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.

HORN SYSTEM

Symptom	Suspected Area	See page
Horn does not sound	HORN fuse	-
	HORN relay (Engine room junction block assembly)
	Horn button assembly
	Steering pad switch assembly
	Spiral cable sub-assembly
	Wire harness	-
Horn sounds all the time	HORN relay (Engine room junction block assembly)
	Horn button assembly
	Steering pad switch assembly
	Spiral cable sub-assembly
	Wire harness	-
Low pitched horn operates but high pitched horn does not operate	High pitched horn assembly
	Wire harness	-
High pitched horn operates but low pitched horn does not operate	Low pitched horn assembly
	Wire harness	-

Horn

Components COMPONENTS ILLUSTRATION Inspection INSPECTION PROCEDURE 1. INSPECT LOW PITCHED HORN ASSEMBLY (a) Apply battery voltage and check the operation of the low pitched ...

Relay

On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. INSPECT HORN RELAY (ENGINE ROOM JUNCTION BLOCK ASSEMBLY) (a) Remove the engine room junction block assembly from the engine ro ...

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Removal
REMOVAL CAUTION / NOTICE / HINT HINT: Use the same procedure for the RH side and LH side. The procedure listed below is for the LH side. PROCEDURE 1. DISCONNECT CABLE FROM NEGATIVE BATTERY TERMINAL CAUTION: Wait at least 90 seconds aft ...