TM 5-2420-231-23-1
0049
Table 1. Rear Window Wiper Does Not Function Correctly - Continued.
049
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
6. Place rear window wiper switch in
Rear Window Wiper Does
the off position (TM 5-2420-231-
Not Function Correctly -
10).
Continued
7. Using a digital multimeter, test for
Continuity - Replace rear window
continuity between rear window
wiper switch (WP 0176).
wiper switch (WP 0007, Figure
Connect all wiring harness connectors.
138) terminal 2 and terminal 3.
Proceed to Test Step 20.
There should be no continuity.
No Continuity - Proceed to step 8.
8. Place rear window wiper switch in
the high-speed position (TM 5-
2420-231-10).
9. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between rear win-
Proceed to Test Step 14.
dow wiper switch (WP 0007,
Resistance Greater Than 5.0 Ohms -
Figure 138) terminal 2 and termi-
Replace rear window wiper switch (WP
nal 3. Resistance should be 5.0
0172).
ohms or less.
Connect all wiring harness connectors.
Proceed to Test Step 20.
Test Step 14. Test Rear Window
Wiper High Speed Circuit for an
Open in the Side Console Wiring
Harness.
1. Disconnect side console wiring
harness connector (WP 0007, Fig-
ure 130) from the cab wiring har-
ness connector (WP 0007, Figure
129).
2. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between side con-
Proceed to step 3.
sole wiring harness connector (WP
Resistance Greater Than 5.0 Ohms -
0007, Figure 137) terminal 3 and
Replace side console wiring harness
side console wiring harness con-
(WP 0170).
nector (WP 0007, Figure 130) ter-
Connect all wiring harness connectors.
minal C3. Resistance should be
Proceed to Test Step 20.
5.0 ohms or less.
3. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between cab wir-
Replace rear window wiper motor (WP
ing harness connector (WP 0007,
0343).
Figure 129) terminal C3 and cab
Connect all wiring harness connectors.
wiring harness connector (WP
Install instrument panel right-side
0007, Figure 127) terminal A.
covers (WP 0176).
Resistance should be 5.0 ohms or
Proceed to Test Step 20.
less.
Resistance Greater Than 5.0 Ohms -
Replace cab wiring harness (WP 0181).
Connect all wiring harness connectors.
Proceed to Test Step 20.
0049-12
