DR ALL-TERRAIN Service Manual Page 553

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ELECTRICAL SYSTEM 16-77
Actuator Control System
Disconnect the 2WD/4WD shift switch lead connector.
Connect:
Controller Connector [A]
Hand Tester [B] (range: DC 10 V)
Test er ( +) Connector (G) Terminal [7]
Test er ( ) Connector (BK/Y) Terminal [10]
Install the needle adapters on the tester leads.
Special Tools - Hand Tester: 57001-1394
Needle Adapter Set: 57001-1457
Turn ON the ignition switch.
Measure the controller output voltage for the 2WD/4WD
shift switch.
Controller Output Voltage (to 2WD/4WD shift switch)
Standard:
5 ±0.25 V
If the reading is not standard, replace the actuator con-
troller unit.
Support the vehicle on a s tand or a jack s o that the wheels
are off the ground.
Connect:
Controller Connector [A]
Hand Tester [B] (range: DC 25 V)
Test er ( +) Connector (W/R) Terminal [15]
Test er ( ) Connector (BK/Y) Terminal [10]
Install the needle adapters on the tester leads.
Special Tools - Hand Tester: 57001-1394
Needle Adapter Set: 57001-1457
Turn ON the ignition switch.
Spin a rear wheel as forward rotation.
After the wheels stop and one second elapses, turn OFF
the ignition switch.
After two seconds elapses, measure the controller output
voltage for the engine brake actuator until the actuator
stops.
Controller Output Voltage (to engine brake actuator)
Standard:
5 12 V
If the reading is not standard, check the forward/reverse
detecting sensor.
If the forward/reverse detecting sensor is normal, replace
the actuator controller unit.
Support the vehicle on a s tand or a jack s o that the wheels
are off the ground.
Run the engine and shift to the 4WD position.
Stop the engine and turn OFF the ignition switch.
Connect:
Controller Connector [A]
Hand Tester [B] (range: DC 25 V)
Test er ( +) Connector (W/Y) Terminal [13]
Test er ( ) Connector (BK/Y) Terminal [10]
Install the needle adapters on the tester leads.
Special Tools - Hand Tester: 57001-1394
Needle Adapter Set: 57001-1457
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