DIFFERENTIAL LOCK CONTROL UNIT CHECK
On-vehicle check
Be sure that vehicle is in 4WD.
Operate vehicle at a speed less than 7 km/h (4 MPH) or
when stopping.
Turn differential lock switch ON.
Ensure differential lock indicator lamp is on.
Ye s
cNo
Malfunction is in system other than differential lock con-
trol unit, speed sensor. Check and correct.
Turn differential lock switch OFF while driving vehicle at
speed less than 7 km/h (4 MPH) or when stopping.
Drive vehicle at speed greater than 7 km/h (4 MPH) and
turn differential lock switch ON.
Ensure differential lock indicator lamp is on.
No
cYe s
When speed sensor functions, differential lock control
unit functions improperly.
Differential lock control unit is functioning properly.Check differential lock control unit.
Unit check
1. Ensure that wiring to differential lock control unit is correct and
that the unit is properly connected to power supply.
2. Place vehicle on a safety stand properly. Ensure that the front
and rear wheels rotate freely.
3. Check output voltage of differential lock at solenoid-2 connec-
tor.
+Vehicle speed less than 7 km/h (4 MPH) on speedometer
Power supply: Approximately 12V
+Vehicle speed greater than 7 km/h (4 MPH) on speedometer
Output voltage: Approximately 0V
SPD445A
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DIFFERENTIAL LOCK
Electrical Components Inspection (Cont'd)
PD-50
INSPECTION OF STABILIZER RELEASE DEVICE
CONTROL UNIT
Terminal No.
Parts of check Speci®cations
+þ
1
Body groundStabilizer off indicatorKey switch ON, Stabilizer switch
ON: 0 volts
OFF: Approx. 0.6 volts
2
Stabilizer switchKey switch ON Stabilizer switch
ON: Battery voltage (Approx. 12 volts)
OFF: 0 volts
3Key switch ON Stabilizer switch
ON: 0 volts
OFF: Battery voltage (Approx. 12 volts)
4Key switch ON: Battery voltage (Approx. 12 volts)
OFF: volts
5 Power supply Always battery voltage (Approx. 12 volts)
6
Stabilizer actuatorKey switch ON Stabilizer switch
ON: 0 volts
OFF: After turning stabilizer switch
``OFF'', battery voltage (Approx. 12
volts) will exist for about 15
seconds, then drop to 0 volts.
7Key switch ON Stabilizer switch
ON: After turning stabilizer switch ``ON'',
battery voltage (Approx. 12 volts)
will exist for about 15 seconds, then
drop to 0 volts.
OFF: 0 volts
8Key switch ON: Approx. 4 volts
OFF: 0 volts
9 Vehicle speed sensorDuring extremely low
speedsVaries from 0 volts to 5 volts
10 Ground Ð
SRA853A
STABILIZER RELEASE DEVICE
Trouble Diagnoses (Cont'd)
RA-24
