Ford F150 Pickup. Manual - part 45

Fig. 18: Installing Central Security Module 
Courtesy of FORD MOTOR CO.

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND EQUIPMENT Multifunction Electronic Module - F150 Pickup

  

2003 ACCESSORIES AND BODY, CAB

Daytime Running Lamps - F150 Pickup 

SPECIFICATIONS 

TORQUE SPECIFICATIONS 

Fig. 1: Torque Specifications Chart 
Courtesy of FORD MOTOR CO. 

DESCRIPTION AND OPERATION 

DAYTIME RUNNING LAMPS (DRL) 

Daytime Running Lamps System 

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND BODY, CAB Daytime Running Lamps - F150 Pickup

  

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND BODY, CAB Daytime Running Lamps - F150 Pickup

  

Fig. 2: Identifying Daytime Running Lamps System Connector Terminal 
Courtesy of FORD MOTOR CO. 

DIAGNOSIS AND TESTING 

DAYTIME RUNNING LAMPS (DRL) 

Refer to HEADLIGHTS for schematic and connector information. 

Special Tool(s) 

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND BODY, CAB Daytime Running Lamps - F150 Pickup

  

Fig. 3: Identifying Special Tool Chart 
Courtesy of FORD MOTOR CO. 

Principles of Operation 

The daytime running lamps (DRL) are implemented by using the low beams at a reduced voltage of 
approximately 80% system voltage. This is accomplished by inserting a DRL resistor (14A601) in series with 
the low beam filaments. When the headlamp switch (11654) is engaged, the daytime running lamp function is 
disabled and the low beam filaments receive 100% system voltage. 

Inspection and Verification 

1. Verify the customer concern by operating the system.  

2. Visually inspect for obvious signs of electrical damage. 

 

2003 Ford Pickup F150 

2003 ACCESSORIES AND BODY, CAB Daytime Running Lamps - F150 Pickup