TM 5-2420-231-23-1
0049
Table 1. Rear Window Wiper Does Not Function Correctly - Continued.
049
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Test Step 15. Test for Faulty Wipers
Rear Window Wiper Does
Fuse.
Not Function Correctly -
Continued
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Remove wipers fuse (Figure 6,
Item 1) (TM 5-2420-231-10).
Figure 6. Fuse Panel.
0049
3. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less - Install
sure resistance between terminals
wipers fuse (TM 5-2420-231-10).
of wipers fuse. Resistance should
Proceed to Test Step 18.
be 5.0 ohms or less.
Resistance Greater Than 5.0 Ohms -
Proceed to Test Step 16.
Test Step 16. Test for Faulty Rear
Window Wiper Motor.
1. Remove headliner from cab (WP
0346).
2. Disconnect two rear window wiper
motor connectors (WP 0007, Fig-
ure 138) from cab wiring harness
connectors (WP 0007, Figure
137).
3. Turn rear window wiper switch to
the off position (TM 5-2420-231-
10).
4. Using a digital multimeter, test for
Continuity - Proceed to Test Step 17.
continuity between cab wiring har-
No Continuity - Replace rear window
ness connector (WP 0007, Figure
wiper motor (WP 0343).
137) terminals D and AA. There
Install new wipers fuse (TM 5-2420-
should be no continuity.
231-10).
Proceed to Test Step 20.
