TM 5-2420-231-23-1
0061
Table 1. 4-Wheel Drive (4WD) Does Not Engage - Continued.
061
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
5. Activate the 4WD switch (TM 5-
Resistance 5.0 Ohms or Less - Install
4-Wheel Drive (4WD) Does
2420-231-10) while measuring
4WD fuse (TM 5-2420-231-10).
Not Engage - Continued
resistance between 4WD switch
Proceed to Test Step 5.
(WP 0007, Figure 199) terminals 1
Resistance Greater Than 5.0 Ohms -
and 2. Resistance should be 5.0
Connect side console wiring harness
ohms or less.
(Figure 5, Item 4) (WP 0007, Figure
198) to 4WD switch (Figure 5, Item 3)
(WP 0007, Figure 199).
Position bezel (Figure 5, Item 2) on side
console (Figure 5, Item 1) and install to
screws (Figure 5, Item 5).
Replace 4WD switch (WP 0172).
Install 4WD fuse (TM 5-2420-231-10).
Proceed to Test Step 22.
Test Step 5. Test for Voltage to 4WD
Switch.
1. Connect batteries (WP 0157) and
turn ignition switch to the on posi-
tion (TM 5-2420-231-10).
2. Using digital multimeter, measure
Voltage 10 to 14 Volts - Proceed to
voltage between side console wir-
Test Step 6.
ing harness connector (WP 0007,
Voltage Less Than 10 Volts - Proceed
Figure 198) terminal 2 and
to Test Step 7.
machine ground. Voltage should
be 10 to 14 volts.
Test Step 6. Test 4WD Input Circuit
for an Open.
1. Turn ignition switch to the off posi-
tion (TM 5-2420-231-10) and dis-
connect batteries (WP 0157).
2. Disconnect powershift connector
wiring harness connector (WP
0007, Figure 20) from transmission
controller (WP 0168).
3. Using a digital multimeter, mea-
Resistance 5.0 Ohms or Less -
sure resistance between side con-
Connect side console wiring harness
sole wiring harness connector (WP
(Figure 5, Item 4) (WP 0007, Figure
0007, Figure 198) terminal 1 and
198) to 4WD switch (Figure 5, Item 3)
powershift connector wiring har-
(WP 0007, Figure 199).
ness connector (WP 0007, Figure
Position bezel (Figure 5, Item 2) on side
20) terminal H2. Resistance
console (Figure 5, Item 1) and install to
should be 5.0 ohms or less.
screws (Figure 5, Item 5).
Replace transmission controller (WP
0168).
Install 4WD fuse (TM 5-2420-231-10).
Proceed to Test Step 22.
Resistance Greater Than 5.0 Ohms -
Proceed to Test Step 7.
0061-7
