2006 INFINITI QX56 Factory Service Manual

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Page 3177 of 3383

INFINITI QX56 2006 Factory Service Manual TF-72
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
OK or NG
OK >> GO TO 7.
NG >> GO TO 2.
2. CHECK ACTUATOR MOTOR POWER SUPPLY CIRCUIT
1. Turn ignition switch “ OFF”. (Stay for at

Page 3178 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYSTEMTF-73
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Revision: November 2009 2006 QX56
3. CHECK ACTUATOR MOTOR GROUND CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)

Page 3179 of 3383

INFINITI QX56 2006 Factory Service Manual TF-74
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
5. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER SHIFT RELAY
1. Turn ignition switch “ OFF”. (Stay for at least 5 sec

Page 3180 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYSTEMTF-75
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Revision: November 2009 2006 QX56
6. CHECK ACTUATOR MOTOR
1. Remove transfer control device. Refer to TF-138, "
Removal and Installation" .

Page 3181 of 3383

INFINITI QX56 2006 Factory Service Manual TF-76
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
COMPONENT INSPECTION
Transfer Shift Relay
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove transfer shift

Page 3182 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYSTEMTF-77
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Revision: November 2009 2006 QX56
Actuator Position SwitchEDS002ID
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.

Page 3183 of 3383

INFINITI QX56 2006 Factory Service Manual TF-78
TROUBLE DIAGNOSIS FOR SYSTEM
Revision: November 20092006 QX56
DIAGNOSTIC PROCEDURE
1. CHECK ACTUATOR POSITION SWITCH SIGNAL
With CONSULT-II
1. Start engine.
2. Select “DATA MONITOR ” mode

Page 3184 of 3383

INFINITI QX56 2006 Factory Service Manual TROUBLE DIAGNOSIS FOR SYSTEMTF-79
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Revision: November 2009 2006 QX56
2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR POSITION SWITCH
1. Turn ignition switch “OF

TROUBLE DIAGNOSIS FOR SYSTEMTF-79
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Revision: November 2009 2006 QX56
2. CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ACTUATOR POSITION SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer control device (actuator position switch) harness connector.
3. Check continuity between the following terminals.
–Transfer control unit harness connector E143 terminal 27 and
transfer control device (actuator position switch) harness con-
nector F58 terminal 23.
–Transfer control unit harness connector E143 terminal 44 and
transfer control device (actuator position switch) harness con-
nector F58 terminal 20.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3. CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control device (actuator position switch) harness connector.
3. Check continuity between transfer control device (actuator posi- tion switch) harness connector F58 terminal 22 and ground.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to ground or short to power in harness or connectors.
4. CHECK ACTUATOR POSITION SWITCH
1. Remove transfer control device. Refer to TF-138, "
Removal and Installation" .
2. Check operation by applying battery voltage to transfer control device (actuator motor) terminals 21 and 24.
CAUTION:
Do not operate actuator motor for more than 1 second.
Change the actuator motor position to “HIGH” when
installing.
Be careful not to overheat the harness.
OK or NG
YES >> GO TO 5.
NO >> Replace transfer control device (actuator motor). Refer to TF-138, "
Removal and Installation" .
Continuity should exist.
SDIA2716E
Continuity should exist.
SDIA2717E
Terminal
Continuity Continuity
24 (Battery voltage) - 21 (Ground) 20 - 22
Yes
22 - 23 No
21 (Battery voltage) - 24 (Ground) 22 - 23
Yes
20 - 22 No
LDIA0101E

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