5-9
5
CD575
2. Turn the ignition switch to the ON position. The
meter must show 12 DC volts.
NOTE: If no voltage is indicated, check the wiring
harness, fuse, or battery connections.
3. Select the lock position on the differential. The
meter should drop to 0 volts, and the front drive
actuator should operate to engage 4-wheel drive.
NOTE: It may be necessary to rock the vehicle
slightly to engage the differential lock fully.
NOTE: On the XT/XTX, the 4WD and LOCK icons
in the upper-left corner of the LCD should illumi-
nate.
CF094E
4. If the differential lock engages (front wheels
locked) and the voltage does not drop to 0, the
switch is faulty and must be cleaned or replaced.
Reverse Override
Switch
VOLTAGE
NOTE: To perform the following tests, the ignition
switch must be in the ON position and the trans-
mission shifted into reverse gear.
1. Connect the red meter lead to the black/blue wire
and the black meter lead to a suitable ground; then
select 2WD on the 2WD/4WD selector switch.
The meter must show approximately 1.5 DC volts.
2. Depress the reverse override switch. The meter
showing should not change from step 1.
3. Select 4WD on the 2WD/4WD selector switch.
The meter must show approximately 5 DC volts.
4. Depress the reverse override switch. The meter
must show approximately 1.5 DC volts.
5. Connect the red meter lead to the red/yellow wire.
The meter must show approximately 1.5 DC volts.
Depress the reverse override switch. The meter
must show approximately 1.5 DC volts.
6. Connect the red meter lead to the red/green wire.
The meter should show 0 DC volts.
7. Depress the reverse override switch. The meter
must show approximately 5 DC volts.
Front Drive Actuator
NOTE: With the engine stopped and the ignition
switch in the ON position, a momentary “whirring”
sound must be noticeable each time the selector
switch is moved to 2WD and 4WD. Test the switch,
30 amp fuse, and wiring connections prior to test-
ing the actuator.
NOTE: The differential must be in the unlocked
position for this procedure.
VOLTAGE
1. Locate the 4-wire connector for the front drive
selector actuator on the frame to the right of the
differential; then connect the red meter lead to the
orange wire using a MaxiClip.
PR293
2. Connect the black lead to the black wire using a
MaxiClip; then select 2WD on the 2WD/4WD
selector switch.
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