TM 5-2420-231-23-1
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Table 1. Rear Window Wiper Does Not Function Correctly.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
Rear Window Wiper Does
Test Step 1. Verify Operation of Rear
Not Function Correctly
Wiper.
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 1,
Item 1) (TM 5-2420-231-10).
Figure 1. Fuse Panel.
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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 step 5.
be 5.0 ohms or less.
Resistance Greater Than 5.0 Ohms -
Proceed to step 4.
4. Install new wipers fuse (TM 5-
2420-231-10).
5. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
6. Place rear window wiper switch
Rear Window Wiper Operates at Low
(Figure 2, Item 2) in the low-speed
Speed - Proceed to step 7.
position (TM 5-2420-231-10), and
Rear Window Wiper Does Not
observe rear window wiper (Figure
Operate at Low Speed - Proceed to
2, Item 1). Rear window wiper
Test Step 2.
should operate at low speed.
7. Place rear window wiper switch
Rear Window Wiper Operates at High
(Figure 2, Item 2) in the high-
Speed - Proceed to step 8.
speed position (TM 5-2420-231-
Rear Window Wiper Does Not
10), and observe rear window
Operate at High Speed - Proceed to
wiper (Figure 2, Item 1). Rear win-
Test Step 9.
dow wiper should operate at high
speed.
