Ford 2003 Mustang Workshop Manual page 3868

SECTION 501-16: Wipers and Washers
DIAGNOSIS AND TESTING
Wipers and Washers
Refer to Wiring Diagrams Cell
information.
Refer to Wiring Diagrams Cell
Special Tool(s)
Alternator, Regulator, Battery
and Starter Tester (ARBST) or
equivalent
010-00725
73 Digital Multimeter or
equivalent
105-R0051
Worldwide Diagnostic System
(WDS)
418-F224
New Generation STAR (NGS)
Tester
418-F052, or equivalent
diagnostic tool
Principles of Operation
Multifunction Wipers
The front wiper/washer feature controls the speed of the front windshield wipers and the amount of
washer fluid sprayed on the front windshield when requested by the customer. There are five (5) wiper
modes: OFF, LOW, HIGH, INTERVAL, and WASH.
Wiper Motor Speeds HIGH and LOW
There are two wiper speeds, HIGH and LOW. When the GEM detects the ignition switch circuits are in
the RUN or ACC states, and the GEM detects a high or low speed request from the wiper mode
circuits, the GEM will activate the wiper ON and OFF and the wiper speed circuits accordingly.
Wiper Motor Speeds Interval
There are one to seven wiper speed intervals, ranging from 1.5 seconds to 20 seconds in delay time
respectively, which can be selected. When the GEM detects the ignition switch circuits are in the RUN
or ACC states, and the GEM detects an interval selection of 1 through 7 from the delay/wash circuits,
the GEM will activate the wiper ON and OFF and the wiper speed circuits accordingly.
59 , Generic Electronic Module for schematic and connector
81 , Interval Wiper/Washer for schematic and connector information.
2003 Mustang Workshop Manual