TM-9-2320-361-24-1
2-1/2 TON, 6X6, M44A2 SERIES TRUCKS
TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2
AUGUST 2006
TM-9-2320-361-24-1 - Page 235 of 1176
TM 9-2320-361-24-1
0013 00
LIGHTING AND WIPER SYSTEM TROUBLESHOOTING (Contd)
0013 00-23/24 blank
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
WINDSHIELD WIPERS
FAIL TO WORK ON
HIGH OR LOW
SETTING
Test 1. Check mechanical linkage for
binding or interference.
Test 2. Test for voltage at wiper
switch.
1. Ensure wiper switch is
properly grounded.
2. Disconnect harness from wiper
switch.
3. Set multimeter to voltage
range that will measure
24 VDC.
4. Turn power accessory switch to
ON position.
5. Touch negative lead of
multimeter to ground and
positive lead to lead 27 of
harness receptacle.
Test 3. Test for voltage at wiper motor.
1. Ensure wiper motor is
properly grounded.
2. Disconnect harness from
wiper motor.
3. Turn wiper switch to LOW
position.
4. Touch negative lead of
multimeter to ground and
positive lead to pin 2 of
harness receptacle.
5. Turn wiper switch to HIGH
position.
6. Touch negative lead of
multimeter to ground and
positive lead to pin 1 of
harness receptacle.
Replace damaged links (WP 0240 00).
1. If voltage is present, perform test 3.
2. If voltage is not present, go to
WP 0012 00, table 2, malfunction 1,
test 3, to check operation of power
accessory switch.
1. If properly grounded, go to step 2.
2. If wiper motor is not properly
grounded, clean dirt or corrosion
from contact end and recheck
continuity.
1. If voltage is present, go to step 5.
2. If voltage is not present, replace
wiper switch (WP 0240 00).
1. If voltage is present, replace wiper
motor (WP 0240 00).
2. If voltage is not present, replace
wiper switch (WP 0240 00).
Table 5. Electrical Wiper System Troubleshooting Procedures.
END OF WORK PACKAGE
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