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RESISTANCE (LO Beam)
1. Connect the red tester lead to the white wire; then
connect the black tester lead to the gray wire.
2. With the dimmer switch in the LO position, the
meter must show an open circuit.
NOTE: If the meter reads resistance, troubleshoot
or replace the switch/component, the connector, or
the switch wiring harness.
DIODE (Starter Button)
NOTE: If voltage is not as specified, check the con-
dition of the battery in the meter prior to replacing the
switch. A low battery will result in a low voltage read-
ing during a diode test.
1. Set the meter selector to the DIODE position.
2. Connect the red tester lead to the orange/white wire;
then connect the black tester lead to the yellow/green
wire.
3. With the starter button depressed, the meter must
show 0.5-0.7 DC volt.
4. With the starter button released, the meter must show
.OL.
5. Connect the red tester lead to the yellow/green wire;
then connect the black tester lead to the orange/white
wire.
6. With the starter button depressed, the meter must
show .OL.
NOTE: If the meter does not show as specified,
replace the switch/component, connector, or switch
harness.
RESISTANCE (Engine Stop)
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the orange wire; then
connect the black tester lead to the orange/white
wire.
3. With the switch in the OFF position, the meter must
show an open circuit.
4. With the switch in the RUN position, the meter must
show less than 1 ohm.
NOTE: If the meter shows more than 1 ohm of resis-
tance, troubleshoot or replace the switch/component,
the connector, or the switch wiring harness.
Drive Select Switch
The connector is the three-wire white one in front of the
steering post. To access the connector, the cover must be
removed.
NOTE: Resistance tests should be made with the
connector disconnected and on the switch side of the
connector.
RESISTANCE
1. Set the meter selector to the OHMS position.
2. Connect the red tester lead to the orange wire; then
connect the black tester lead to the green/white wire.
3. With the selector switch in the 4WD position, the
meter must show less than 1 ohm.
4. Connect the black tester lead to the black wire; then
select the 4WD LOCK position. The meter should
show less than 2 ohms.
NOTE: If the meter does not show as specified,
replace the front drive selector switch.
VOLTAGE
NOTE: The battery must be connected when per-
forming voltage tests.
1. Set the meter selector to the DC Voltage position.
2. Connect the black tester lead to black wire on the
harness side of the connector.
3. Connect the red tester lead to the white/orange wire
on the harness side of the connector.
4. Turn the ignition switch to the RUN position.
5. The meter must show approximately 8 DC volts.
NOTE: If the meter shows other than specified,
check the harness, connector, 30 amp fuse, and bat-
tery connections.
Front Drive/Differential
Lock 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 testing the
actuator.
VOLTAGE
1. Select the 2WD position on the front drive selector
switch; then disconnect the actuator connector from
the main wiring harness.
2. With the ignition switch in the OFF position, connect
the black tester lead to the black wire in the main
harness; then connect the red tester lead to the orange
wire in the main harness.
3. Turn the ignition switch to the ON position. The
meter must show battery voltage.
4. Connect the red tester lead to the white/orange wire
in the main harness. The meter must show battery
voltage.
5. Connect the red tester lead to the white/green wire in
the main harness. The meter must show battery volt-
age.
