Ford F150 Pickup. Manual — part 305

Fig. 142: Installing LH And RH A-Pillar Assist Handles
Courtesy of FORD MOTOR CO.

23. If equipped, install the overhead console.

24. Install the cowl top vent panel. Refer to COWL -- GRILLE .

2003 Ford Pickup F150

2003 ACCESSORIES AND EQUIPMENT Glass, Frames and Mechanisms - F150 Pickup

2003 ACCESSORIES AND BODY, CAB

Horn - F150 Pickup

SPECIFICATIONS

TORQUE SPECIFICATIONS

Fig. 1: Torque Specifications Chart (Horn Bolt)
Courtesy of FORD MOTOR CO.

DESCRIPTION AND OPERATION

HORN

The horn system includes the following components:

z

steering wheel pad horn switch (part of driver side air bag module)

z

horn relay (located in the battery junction box [BJB])

z

horns (located underneath the passenger side headlights behind the front bumper)

z

clockspring

z

central security module

DIAGNOSIS AND TESTING

HORN

Refer to HORN for schematic and connector information.

Special Tool(s)

2003 Ford Pickup F150

2003 ACCESSORIES AND BODY, CAB Horn - F150 Pickup

2003 Ford Pickup F150

2003 ACCESSORIES AND BODY, CAB Horn - F150 Pickup

Fig. 2: Identifying Special Tool(s) For Horn
Courtesy of FORD MOTOR CO.

Inspection and Verification

1. Verify the customer concern by operating the horn.

For additional information, refer to AIR BAG RESTRAINT SYSTEMS - F150 PICKUP .

The central security module is located under the instrument panel to the left of the steering column. For
removal and installation of the central security module, refer to MODULE - CENTRAL SECURITY
MODULE (CSM) .

2. Visually inspect for obvious signs of mechanical and electrical damage.

Visual Inspection Chart

NOTE:

The steering wheel pad horn switch is part of the driver side air bag
module.

2003 Ford Pickup F150

2003 ACCESSORIES AND BODY, CAB Horn - F150 Pickup

Fig. 3: Visual Inspection Chart
Courtesy of FORD MOTOR CO.

3. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before

proceeding to the next step.

Symptom Chart

Fig. 4: Symptom Chart
Courtesy of FORD MOTOR CO.

Pinpoint Test

PINPOINT TEST A: HORN IS INOPERATIVE

2003 Ford Pickup F150

2003 ACCESSORIES AND BODY, CAB Horn - F150 Pickup