Toyota 4Runner: 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 |
- |
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- *: 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:
Headlight Relay Circuit
DESCRIPTION
The main body ECU receives headlight dimmer switch information signals, and illuminates
the low beam headlight.
WIRING DIAGRAM
CAUTION / NOTICE / HINT
NOTICE:
Inspect the fuses and bulbs for circuits related to this system before performin ...
Terminals Of Ecu
TERMINALS OF ECU
1. CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY
(a) Disconnect the F42 air conditioning amplifier connector.
(b) Measure the voltage and resistance according to the value(s) in the table
below.
Terminal No. (Symbol)
...
0.0214