Toyota 4Runner: Horn System

Toyota 4Runner Service Manual / Vehicle Exterior / Horn / Horn System

Parts Location

PARTS LOCATION

ILLUSTRATION

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
	Low pitched horn assembly
	High pitched horn assembly
	Engine room relay block (No. 1 integration relay)
	Steering pad (Horn button assembly)
	Steering pad switch assembly*	-
	Spiral cable sub-assembly
	Harness or connector	-

*: w/ Steering Pad Switch Assembly

System Diagram

SYSTEM DIAGRAM

Horn

Components COMPONENTS ILLUSTRATION Inspection INSPECTION PROCEDURE 1. INSPECT HIGH PITCHED HORN ASSEMBLY (a) Apply battery voltage and check the operation of the horn according to the ...

Integration Relay

On-vehicle Inspection ON-VEHICLE INSPECTION PROCEDURE 1. REMOVE NO. 1 RELAY BLOCK COVER (a) Remove the No. 1 relay block cover. 2. INSPECT NO. 1 INTEGRATION RELAY (a) Using a screwd ...

Other materials about Toyota 4Runner:

General Maintenance
GENERAL MAINTENANCE PROCEDURE 1. INSPECT STEERING LINKAGE AND GEAR HOUSING (a) Check the steering wheel free play. (b) Check the steering linkage for looseness or damage. (1) Check that the tie rod ends do not have excessive play. (2) Check that the dust ...

Prl Update
PRL UPDATE 1. PRL UPDATE This function updates the PRL (Preferred Roaming List) of the DCM (Telematics Transceiver). The PRL is a large set of phone numbers the DCM (Telematics Transceiver) can utilize to make an emergency call when outside (roaming) the ...