TM 5-2420-231-23-1
0047
Table 1. Front Windshield Wiper Does Not Function Correctly - Continued.
047
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 14. Test for Faulty Front
Front Windshield Wiper
Windshield Wiper Motor.
Does Not Function Correctly
- Continued
1. Remove headliner from cab (WP
0346).
2. Disconnect two front windshield
wiper motor connectors (WP 0007,
Figure 63) from front lights wiring
harness connector (WP 0007, Fig-
ure 62).
3. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
4. Place front windshield wiper switch
(Figure 2, Item 2) in the high-
speed position (TM 5-2420-231-
10).
5. Using digital multimeter, measure
Voltage 10 to 14 Volts - Proceed to
voltage between front lights wiring
step 6.
harness connector (WP 0007, Fig-
Voltage Less Than 10 Volts - Turn
ure 62) terminal A and machine
front windshield wiper switch to the off
ground. Voltage should be 10 to 14
position (TM 5-2420-231-10).
volts.
Proceed to Test Step 15.
6. Using digital multimeter, measure
Voltage 10 to 14 Volts - Replace front
voltage between front lights wiring
windshield wiper motor (WP 0342).
harness connector (WP 0007, Fig-
Install new wipers fuse (TM 5-2420-
ure 62) terminal A and terminal
231-10).
AA. Voltage should be 10 to 14
Proceed to Test Step 26.
volts.
Voltage Less Than 10 Volts - Replace
front lights wiring harness (WP 0183).
Proceed to Test Step 26.
Test Step 15. Test Front Windshield
Wiper Switch.
1. Remove instrument panel front
cover (WP 0174).
2. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
3. Place front windshield wiper switch
in the off position (TM 5-2420-231-
10).
4. Using a digital multimeter, test for
Continuity - Replace front windshield
continuity between front wind-
wiper switch (WP 0174).
shield wiper switch (WP 0007, Fig-
Connect all wiring harness connectors.
ure 132) terminals 2 and 3. There
Proceed to Test Step 26.
should be no continuity.
No Continuity - Proceed to step 5.
0047-11
