TM 5-2420-231-23-1
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Table 1. 4-Wheel Drive (4WD) Does Not Engage - Continued.
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MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. Using a digital multimeter, test for
Continuity - Install new 4WD fuse
4-Wheel Drive (4WD) Does
continuity between side console
(TM 5-2420-231-10).
Not Engage - Continued
wiring harness connector (WP
Replace side console wiring harness
0007, Figure 24) terminal 6E and
(WP 0170).
machine ground. There should be
Proceed to Test Step 22.
no continuity.
No Continuity - Proceed to Test Step
12.
Test Step 12. Test Main Chassis
Wiring Harness 4WD Input Circuit for
a Short.
1. Remove front floor cover plate
(WP 0306).
2. Disconnect 4WD jumper harness
(WP 0007, Figure 121) from main
chassis wiring harness connector
(WP 0007, Figure 120) (WP 0156).
3. Using a digital multimeter, mea-
Continuity - Install front floor cover
sure resistance between main
plate (WP 0306).
chassis wiring harness connector
Connect side console wiring harness
(WP 0007, Figure 25) terminal 6E
(Figure 7, Item 4) (WP 0007, Figure
and machine ground. There should
198) to 4WD switch (Figure 7, Item 3)
be no continuity.
(WP 0007, Figure 199).
Position bezel (Figure 7, Item 2) on side
console (Figure 7, Item 1) and install to
screws (Figure 7, Item 5).
Install new 4WD fuse (TM 5-2420-231-
10).
Replace main chassis wiring harness
(WP 0154).
Proceed to Test Step 22.
No Continuity - Proceed to Test Step
13.
Figure 7. 4WD Switch and Bezel.
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