windshield wipers FORD MUSTANG 2003 Workshop Manual

DESCRIPTION AND OPERATION
Module Controlled Functions
The generic electronic module (GEM)(14B205) is the only multifunction control module on this vehicle.
The GEM controls the following functions:
zwarning chimes and warning lamps
z one- touch down window
z windshield washers and wipers
z battery saver
z illuminated entry with keyless remote entry
z interior lighting
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SPECIFICATIONS
SECTION 501-
16: Wipers and Washers 2003 Mustang Workshop Manual General Specifications
Item Specification
RH wiper blade to top edge of cowl top vent panel 55-
88mm (2.16- 3.18 inches) LH wiper blade to top edge of cowl top vent panel 56-
80mm (2.20- 3.14 inches)
Torque Specifications Description Nm lb-
ft lb-
in Windshield wiper mounting arm and pivot shaft bolt. 15 11 —
Windshield wiper motor bolts. 15 11 —
Windshield washer fluid reservoir screw. 6 — 53
Battery Ground Cable 10 — 89 Klj . 1 ba
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DESCRIPTION AND OPERATION
Wipers and Washers
The wiper and washer system consists of the following components:
zwindshield wiper mounting arm and pivot shaft
z pivot arms
z windshield wiper blades
z windshield washer reservoir
z windshield washer pump
z windshield wiper motor
z generic electronic module (GEM)
z multi- function switch
z windshield washer nozzle and bracket
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DIAGNOSIS AND TESTING
Wipers and Washers
Refer to Wiring Diagrams Cell
59 , Generic Electronic Module for schematic and connector
information.
Refer to Wiring Diagrams Cell 81 , Interval Wiper/Washer for schematic and connector information.
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. SECTION 501-
16: Wipers and Washers 2003 Mustang Workshop Manual 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 Klj . 1 ba
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PINPOINT TEST B: WINDSHIELD WIPERS DO NOT OPERATE /
OPERATE CORRECTLY z
Is the resistance less than 5 ohms? for normal operation.
A3 CHECK CIRCUIT 397 (BK/WH) FOR SHORT TO POWER
z
Measure the voltage between the GEM C201b pin 4, circuit
397 (BK/WH), harness side and ground.
z Is any voltage present? Yes
REPAIR the circuit. TEST
the system for normal
operation.
No
REFER to
Section 418 - 00 .
Test Step Result / Action to Take
B1 DETERMINE IF GEM IS RECEIVING CORRECT IGNITION
SWITCH STATUS z
Key in OFF position.
z Connect the diagnostic tool.
z NOTE: If the vehicle is equipped with a manual
transmission, depress the clutch while turning the ignition
switch to START.
z Monitor the GEM PIDs IGN_S, IGN_R IGN_A, and
IGN_KEY while turning the ignition switch through the
START, RUN, OFF and ACC positions.
z Do the GEM PID values agree with the ignition switch
positions? Yes
GO to
B2 .
No
REFER to Section 413 - 09 .
B2 DETERMINE IF GEM IS RECEIVING CORRECT WIPER
SWITCH STATUS FROM MULTIFUNCTION SWITCH z
Key in ON position.
z Monitor PID WPMODE, while moving through all wiper
control positions on the multifunction switch.
z Do the GEM PID values agree with switch positions? Yes
GO to
B3 .
No
GO to B6 .
B3 TEST GEM CONTROL OF WIPER ON/OFF RELAY
z
Trigger the GEM active command WIPER RLY ON and
OFF.
z Do the wipers turn ON and OFF? Yes
GO to
B4 . Klj . 7 ba
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GENERAL PROCEDURES
Wiper Blade and Pivot Arm Adjustment
1. Cycle and park the windshield wipers.
2. Verify that the distance between the center of the RH windshield wiper blade and the top edge of the cowl top vent panel is within specification.
3. Verify that the distance between the center of the LH windshield wiper blade and the top edge of the cowl top vent panel is within specification.
4. If the distance is not within specification, remove the windshield wiper pivot arms and reposition to specification.
Remove the pivot arm. 1. Pull up on the pivot arm.
2. Pull out on the retainer tab and remove the pivot arm.
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REMOVAL AND INSTALLATION
Pivot Arm
Removal
1. NOTE: New windshield wiper pivot arms need to be installed as an assembly.
Remove the pivot arm. 1. Pull up on the pivot arm.
2. Pull out on the retainer tab and remove the pivot arm.
Installation 1. To install, reverse the removal procedure.
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REMOVAL AND INSTALLATION
Mounting Arm and Pivot Shaft
Removal
1. Park the windshield wipers in the full upright position. This will allow for easy access to the retaining clip on the wiper motor output shaft.
2. Remove the cowl top vent panels.
3. Disconnect the battery ground cable.
4. Disconnect the mounting arm and pivot shaft linkage from the wiper motor output shaft. 1. Remove the clip.
2. Disconnect the mounting arm and pivot shaft linkage from the wiper motor output shaft.
5. NOTE: It is necessary to lower the hood to remove the mounting arm and pivot shaft.
Remove the mounting arm and pivot shaft. 1. Remove the bolts.
2. Remove the mounting arm and pivot shaft through the RH cowl chamber opening.
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REMOVAL AND INSTALLATION
Motor —
Windshield Wiper
Removal
CAUTION: The internal permanent magnets used in the windshield wiper motor are made
of a glass- like material. To avoid damaging the magnets, do not strike the motor with a hammer
or any other object.
NOTE: The windshield wiper motor is not a repairable item. If worn or damaged, install a new wiper
motor.
1. Park the windshield wipers in the full upright position. This will allow for easy access to the retaining clip on the wiper motor output shaft.
2. Remove the cowl top vent panels.
3. Disconnect the negative battery cable.
4. Disconnect the mounting arm and pivot shaft linkage from the wiper motor output shaft. 1. Remove the clip.
2. Disconnect the mounting arm and pivot shaft linkage.
5. Remove the wiper motor. 1. Disconnect the electrical connector. 2. Remove the bolts. SECTION 501-
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REMOVAL AND INSTALLATION
Washer Pump
Removal
1. Remove the LF wheel and tire. Refer to Section 204 - 04 .
2. Position the front portion of the LF inner splash shield aside.
3. WARNING: Windshield washer solution contains methanol, which is poisonous.
Observe all cautions and warnings indicated on label of washer solution container.
NOTE: To prevent spilling windshield washer fluid, drain the windshield washer reservoir before
removal.
Remove the washer pump. 1. Disconnect the electrical connector.
2. Disconnect washer hose from the washer pump.
3. Remove the washer pump.
Installation 1. WARNING: Windshield washer solution contains methanol, which is poisonous.
Observe all cautions and warnings indicated on label of washer solution container.
CAUTION: Do not operate the windshield washer pump prior to filling the
windshield reservoir.
To install, reverse the removal procedure.
zFill the windshield washer reservoir.
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