The horn system operates on battery current received through a fuse in the Integrated Power Module (IPM). The
horn system circuit is designed so that the system will remain operational, regardless of the ignition switch position.

DIAGNOSIS AND TESTING

HORN SYSTEM

The most reliable, efficient, and accurate means to diagnose the horn system requires the use of a scan
tool and the proper Diagnostic Procedures information.

Refer to the appropriate wiring information.

In most cases, any problem involving continually sounding horns can be quickly alleviated by removing the horn
fuse from the Integrated Power Module (IPM).

8H - 14

HORN SYSTEM - SERVICE INFORMATION

WARNING: DISABLE THE AIRBAG SYSTEM BEFORE ATTEMPTING ANY STEERING WHEEL, STEERING
COLUMN, SEAT BELT TENSIONER, SIDE AIRBAG, OR INSTRUMENT PANEL COMPONENT DIAGNOSIS OR
SERVICE. DISCONNECT AND ISOLATE THE BATTERY NEGATIVE (GROUND) CABLE, THEN WAIT TWO MIN-
UTES FOR THE AIRBAG SYSTEM CAPACITOR TO DISCHARGE BEFORE PERFORMING FURTHER DIAGNO-
SIS OR SERVICE. THIS IS THE ONLY SURE WAY TO DISABLE THE AIRBAG SYSTEM. FAILURE TO TAKE
THE PROPER PRECAUTIONS COULD RESULT IN ACCIDENTAL AIRBAG DEPLOYMENT AND POSSIBLE
PERSONAL INJURY.

HORN

DIAGNOSIS AND TESTING

HORN

The most reliable, efficient, and accurate means to diagnose the horn system requires the use of a scan
tool and the proper Diagnostic Procedures information.

Refer to the appropriate wiring information.

REMOVAL

1. Disconnect and isolate the battery negative cable.

2. Remove the horn mounting fasteners.

3. Disconnect the electrical harness connector and

remove the horns.

HORN SYSTEM - SERVICE INFORMATION

8H - 15

INSTALLATION

1. Connect the electrical harness connector to the

horns.

2. Position

horns

and

install

mounting

fastener.

Tighten fastener.

3. Connect battery negative cable.

SWITCH-HORN

DESCRIPTION

The horn switch is molded into the driver airbag cover. The horn switch can not be serviced separately (Refer to 8
- ELECTRICAL/RESTRAINTS/DRIVER AIRBAG - DESCRIPTION).

DIAGNOSIS AND TESTING

HORN SWITCH

The most reliable, efficient, and accurate means to diagnose the horn system requires the use of a scan
tool and the proper Diagnostic Procedures information.

For complete circuit diagrams, refer to the appropriate wiring information.

8H - 16

HORN SYSTEM - SERVICE INFORMATION

IGNITION CONTROL

TABLE OF CONTENTS

page

IGNITION SYSTEM - ELECTRICAL

DIAGNOSTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

IGNITION SYSTEM - SERVICE INFORMATION. . . . 5

IGNITION SYSTEM - ELECTRICAL DIAGNOSTICS

TABLE OF CONTENTS

page