Dodge Ram Truck 1500-2500-3500. Manual — part 349

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.

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.

REMOVAL

1. Disconnect and isolate the battery negative cable.

2. Disconnect the wire harness connectors (1) from

the horns (2).

3. Remove mounting bolt (3) and remove horns.

INSTALLATION

1. Position horns (2). Install and tighten mounting bolt

(2).

2. Connect wire harness connectors (1).

3. Connect battery negative cable.

8H - 20

HORN SYSTEM - SERVICE INFORMATION

DR/DH

SWITCH-HORN

DESCRIPTION

The horn switch is molded into the driver airbag. The horn switch can not be serviced separately. For service pro-
cedures, (Refer to 8 - ELECTRICAL/RESTRAINTS/DRIVER AIRBAG - REMOVAL).

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.

DR/DH

HORN SYSTEM - SERVICE INFORMATION

8H - 21

IGNITION CONTROL

TABLE OF CONTENTS

page

IGNITION CONTROL - ELECTRICAL

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

IGNITION CONTROL - SERVICE INFORMATION . . 5

IGNITION CONTROL - ELECTRICAL DIAGNOSTICS

TABLE OF CONTENTS