Ford Falcon. Manual — part 336

413-06-1 Horn 413-06-1

SECTION : 413-06 Horn

VEHICLE APPLICATION : 2003.0 BA Falcon
CONTENTS

PAGE

SPECIFICATIONS

Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413-06-2

DESCRIPTION AND OPERATION

Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..413-06-3

DIAGNOSIS AND TESTING

Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..413-06-4

Inspection and Verification . . . . . . . . . . . . . . . . . . . . . . . . ...413-06-4

Symptom

Chart

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 413-06-4

Pinpoint

Tests

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..413-06-4

REMOVAL AND INSTALLATION

Horn . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..413-06-8

413-06-2 Horn 413-06-2

SPECIFICATIONS

Torque Specifications

Description

Nm

Screw M6X18 Taptite

8

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413-06-3 Horn 413-06-3

DESCRIPTION AND OPERATION

Horn

Low series vehicles are fitted with one low note horn,

whilst high series vehicles are fitted with a pair of

tuned horns. One has a high pitch tone and the other

has a low pitched tone.
The horn mylar switch pad is incorporated in the

steering wheel pad providing a large contact

area.When pressed the horn switch pad completes

the circuit to the horns.
The horn system consists of the following

components:

steering wheel pad horn switch
horns
horn relay

The steering wheel pad horn switch is part of the

driver side air bag module. For additional information,

refer to Section 501-20b.

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413-06-4 Horn 413-06-4

DIAGNOSIS AND TESTING

Inspection and Verification

Horn

1. Verify the customer concern.

Refer to Wiring Diagram Section 413-06 for schematic

2. Visually inspect for the following obvious signs of

and connector information.

mechanical and electrical damage:

Special Tool(s)

Visual Inspection Chart

73III Automotive Meter

Mechanical

Electrical

105-R0057 or equivalent

Horn(s)

Central junction box

Horn relay

(CJB) fuse.

Steering wheel pad

Circuitry

horn switch

3. If the fault is not visually evident, verify the

symptom and proceed to the Symptom Chart.

Symptom Chart

Condition

Source

Action

Loose connections at horn button

The horn does not sound

Go to PinPoint Test A.

contact.
Open wire from horn to horn button.
Open wire from fuse box to horn
button.
Horns defective or out of adjustment.
Fuse burned out.

The horn sounds continuously

Horn button defective.

Go to PinPoint Test B.

One horn fails to operate (if dual horm

Broken or loose wire to the horn.

Go to PinPoint Test C.

is fitted).

Horn defective or out of adjustment

Pinpoint Tests

PINPOINT TEST A : THE HORN DOES NOT SOUND

Test Step

Result / Action to Take

A1

CHECK POWER SUPPLY TO HORN RELAY

Disconnect Horn Relay.

Yes

Go to A2.

Measure the voltage between horn relay [Circuit 1], harness side and
ground; and between the horn relay [Circuit 385], harness side and

No

ground.

REPAIR the circuit. TEST the system for normal
operation.

Are the voltages greater than 10 volts?

A2

CHECK HORN RELAY

Test the horn relay.

Yes

Go to A3.

Is the horn relay OK?

No

INSTALL a new horn relay. TEST the system for
normal operation.

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