Ford Mustang (1999-2004) Service Manual: Module - Daytime Running Lamps (DRL)
Removal
1. CAUTION: Electronic modules are sensitive to static electrical charges. If exposed to these charges, damage can result.
Disconnect the battery ground cable.
2. Remove the daytime running lamps (DRL) module and bracket assembly (15A270).
1. Remove the nut.
2. Disconnect the electrical connector.
3. Remove the DRL module and bracket assembly.

Installation
1. CAUTION: When the battery is disconnected and reconnected, some abnormal drive symptoms may occur while the vehicle relearns its adaptive strategy. The vehicle may need to be driven 10 miles (16 km) or more to relearn the strategy.
To install, reverse the removal procedure.

Daytime Running Lamps (DRL) (Diagnosis and Testing)
Refer to Wiring Diagrams Cell 97 , Daytime Running Lamps for schematic
and connector information.
Special Tool(s)
73III Automotive Meter or
equivalent
105-R0057
Principles of Oper ...
Other materials:
Universal Garage Door Opener (If Equipped)
UNIVERSAL GARAGE DOOR OPENER
The appearance of your vehicle’s universal garage door opener will
vary according to your option package. Before programing, make sure
you identify which transmitter you have by comparing it to the graphics
below.
HomeLink®
Ca ...
Piston - Ring-to-Groove Clearance
1. Inspect the piston for ring land damage or accelerated wear.
2. Measure the piston ring-to-groove clearance.
Refer to the appropriate section in Group for the procedure.
If out of specification, install new components as necessary. Refer
to the a ...
Pinpoint Tests
PINPOINT TEST A: THE SPEED CONTROL IS INOPERATIVE
Test Step
Result / Action to Take
A1 CHECK THE SPEED CONTROL SERVO VOLTAGE AND
GROUND
YesGO to A3 .
No
GO to A2 .
Key in OFF position.
Disconnect: Speed Control Servo C122.
...

