Chrysler RAM TRUCK 2500 1994 Service Manual page 470

• WINDSHIELD WIPER AND WASHER SYSTEMS 8K - 1
WINDSHIELD WIPER AND WASHER SYSTEMS
C O N T E N T S
page
WINDSHIELD WASHERS 11
WINDSHIELD WIPER FUNCTION AND SWITCH
TESTING PROCEDURES 5
WINDSHIELD WIPER MOTOR TESTING
PROCEDURES 1
WINDSHIELD WIPER SYSTEM SERVICE
PROCEDURES
page
. . 8
GENERAL INFORMATION
The windshield wipers can be operated with the
windshield wiper switch only when the ignition
switch is i n the ACCESSORY or ON position. Fuse
cavity 3, located i n the fuseblock module, protects the
circuitry of the wiper system.
The wiper motor has permanent magnet fields. The
speeds are determined by current flow to the appro­
priate set of brushes.
The intermittent wipe system i n addition to low
and high speed, has a delay mode. The delay mode
has a range of 2 to 15 seconds. This is accomplished
by a variable resistor i n the wiper switch and is con­
trolled electrically by a control module.
The wiper system completes the wipe cycle when
the switch is turned OFF. The blades park in the
lowest portion of the wipe pattern.
Depressing the washer knob while the system is i n
the OFF position,
• turns the wiper motor on
• allows the motor to operate through 3-4 wipe cy­
cles and then turn OFF.
WINDSHIELD WIPER MOTOR TESTING PROCEDURES
The following is a list of general wiper motor sys- only the delay mode, switch, or wiring, refer to the
tern problems. I t contains the tests that are to be Intermittent Windshield Wiper Function Testing Pro-
performed to locate the faulty part, and the correc- cedures.
tive action to be taken. I f the malfunction involves