TM 5-3805-261-23-1
ELECTRICAL SYSTEM TROUBLESHOOTING PROCEDURES - CONTINUED
0008 00
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
Test wiper switch circuitry for
40. Windshield Wiper Will Not
continuity between switch and wiper
Operate or Will Not Operate
motor.
in High Speed or Low Speed
Position (CCE Machine) -
a. Place battery disconnect switch in
Continued.
OFF position.
b. Completely disconnect wiper
switch wiring.
c. Set multimeter to appropriate ohm
(Ω) range.
d. Connect meter positive lead to one
1. If continuity is indicated, go to Test 3.
end of each of the 3 wires. Connect
2. If continuity is not indicated, repair
meter negative lead to other end of
circuit in question (WP 0021 00). If the
each wire. Observe meter.
problem still exists, go to Test 3.
3.
Test wiper switch source voltage.
a. Place battery disconnect switch in
OFF position.
b. Completely disconnect wiper
switch wiring.
c. Set multimeter to appropriate
voltage range.
d. Connect meter positive lead to
black wire. Connect meter negative
lead chassis ground.
1. If voltage is indicated, replace wiper
e. Place battery disconnect switch in
switch (WP 0085 00).
ON position. Observe meter
reading.
2. If voltage is not indicated, repair open
circuit in black wire (WP 0021 00). If
the problem still exists, go to Test 4.
4.
Test wiper motor ground for
continuity.
a. Place battery disconnect switch in
OFF position.
b. Completely disconnect wiper
motor wiring.
c. Set multimeter to appropriate ohm
(Ω) range.
d. Connect meter positive lead to
wiper motor ground wire. Connect
meter negative lead to chassis
ground.
0008 00-36
