2005 NISSAN NAVARA ignition

TROUBLE DIAGNOSIS FOR SYSTEM
TF-71
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3.CHECK TRANSFER SHIFT RELAY POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay. Refer toTF-21, "
Location of Electrical Parts".
3. Check voltage between transfer control unit harness connector
terminal and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between transfer control unit harness connector
terminal and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.
lHarness for short or open between transfer control unit harness connector terminal 27 and
transfer shift high relay harness connector E27 terminal 2.
lHarness for short or open between transfer control unit harness connector terminal 27 and
transfer shift low relay harness connector terminal E29 terminal 2.
4.CHECK TRANSFER SHIFT RELAY
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay.
3. Apply 12V direct current between transfer shift high relay and
transfer shift low relay terminals 1 and 2.
4. Check continuity between relay terminals 3 and 4, 3 and 5.
OK or NG
OK >> GO TO 5.
NG >> Replace transfer shift high relay or transfer shift low relay.
Connector Terminal Voltage (Approx.)
E27 2 - Ground
0V
E29 2 - Ground
SDIA3384E
Connector Terminal Voltage (Approx.)
E27 2 - Ground
Battery voltage
E29 2 - Ground
SDIA3385E
Terminal Condition Continuity
3-412V direct current supply between terminals 1 and 2 No
OFF Yes
3-512V direct current supply between terminals 1 and 2 Yes
OFF No
LDIA0099E

TF-72
TROUBLE DIAGNOSIS FOR SYSTEM
5.CHECK (1): HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER SHIFT RELAY
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Remove transfer shift high relay and transfer shift low relay.
4. Check continuity between the following terminals.
–Transfer control unit harness connector M106 terminal 42 and
transfer shift high relay harness connector E27 terminal 1.
–Transfer control unit harness connector M106 terminal 50 and
transfer shift low relay harness connector E29 terminal 1.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.CHECK (2): HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER SHIFT RELAYS
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Remove transfer shift high relay and transfer shift low relay.
4. Check continuity between the following terminals.
–Transfer control unit harness connector M106 terminal 28 and
transfer shift high relay harness connector E27 terminal 5.
–Transfer control unit harness connector M106 terminal 28 and
transfer shift low relay harness connector E29 terminal 5.
–Transfer control unit harness connector M106 terminal 31 and
transfer shift high relay harness connector E27 terminal 4.
–Transfer control unit harness connector M106 terminal 31 and
transfer shift low relay harness connector E29 terminal 4.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.Continuity should exist.
SDIA3386E
Continuity should exist.SDIA3387E

TROUBLE DIAGNOSIS FOR SYSTEM
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7.CHECK ACTUATOR MOTOR OPERATION CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer control device (actuator motor) har-
ness connector.
3. Remove transfer shift high relay and transfer shift low relay. Refer toTF-21, "
Location of Electrical Parts".
4. Check continuity between the following terminals.
–Transfer control unit harness connector M106 terminal 47 and
transfer control device (actuator motor) harness connector F47
terminal 23.
–Transfer control unit harness connector M106 terminal 48 and
transfer control device (actuator motor) harness connector F47
terminal 24.
–Transfer control device (actuator motor) harness connector F47
terminal 24 and transfer shift high relay harness connector E27
terminal 3.
–Transfer control device (actuator motor) harness connector F47
terminal 23 and transfer shift low relay harness connector E29
terminal 3.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 8.
NG >> Repair or replace damaged parts.
8.CHECK ACTUATOR MOTOR
1. Remove transfer control device. Refer toTF-105, "
Removal and Installation".
2. Check operation by applying battery voltage to transfer control
device (actuator motor) terminals 23 and 24.
CAUTION:
Be careful not to overheat the harness.
Does actuator motor rotate?
YES >> GO TO 9.
NO >> Replace transfer control device (actuator motor). Refer
toTF-105, "
Removal and Installation".
9.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer toTF-38, "
Transfer Control Unit Input/Output Signal Ref-
erence Values".
OK or NG
OK >> GO TO 10.
NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
SDIA2811E
Continuity should exist.
SDIA3394E
Terminal Actuator motor
24 (Battery voltage) - 23 (Ground) Clockwise rotate
23 (Battery voltage) - 24 (Ground) Counterclockwise rotate
SDIA2386E

TF-74
TROUBLE DIAGNOSIS FOR SYSTEM
10.CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Replace transfer control unit. Refer toTF-100, "
Removal and Installation".
COMPONENT INSPECTION
Actuator Motor
1. Remove transfer control device. Refer toTF-105, "Removal and Installation".
2. Check operation by applying battery voltage to transfer control
device (actuator motor) terminals 23 and 24.
CAUTION:
Be careful not to overheat the harness.
3. If NG, replace transfer control device (actuator motor). Refer to
TF-105, "
Removal and Installation".
Transfer Shift Relay
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove transfer shift high relay and transfer shift low relay. Refer toTF-21, "
Location of Electrical Parts".
3. Apply 12V direct current between transfer relay terminals 1 and 2.
4. Check continuity between relay terminals 3 and 4, and 3 and 5.
5. If NG, replace transfer shift high relay or transfer shift low relay.
Refer toTF-21, "
Location of Electrical Parts".
Terminal Actuator motor
24 (Battery voltage) - 23 (Ground) Clockwise rotate
23 (Battery voltage) - 24 (Ground) Counterclockwise rotate
SDIA2386E
Terminal Condition Continuity
3-412V direct current supply between terminals 1 and 2 No
OFF Yes
3-512V direct current supply between terminals 1 and 2 Yes
OFF No
LDIA0099E

TROUBLE DIAGNOSIS FOR SYSTEM
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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 M105 terminal 10 and
transfer control device (actuator position switch) harness con-
nector F47 terminal 26.
–Transfer control unit harness connector M105 terminal 11 and
transfer control device (actuator position switch) harness con-
nector F47 terminal 20.
–Transfer control unit harness connector M105 terminal 12 and
transfer control device (actuator position switch) harness con-
nector F47 terminal 21.
–Transfer control unit harness connector M105 terminal 13 and
transfer control device (actuator position switch) harness connector F47 terminal 25.
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. Check continuity between transfer control device (actuator posi-
tion switch) harness connector F47 terminal 22 and ground.
Also check harness for short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair open circuit or short to power in harness or con-
nectors.
4.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer toTF-38, "
Transfer Control Unit Input/Output Signal Ref-
erence Values".
OK or NG
OK >> GO TO 5.
NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
5.CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Replace transfer control device. Refer toTF-105, "
Removal and Installation". Continuity should exist.
SDIA3370E
Continuity should exist.
SDIA2815E

TF-78
TROUBLE DIAGNOSIS FOR SYSTEM
Transfer Control Device
EDS00328
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
TRANSFER CONTROL UNIT TERMINALS AND REFERENCE VALUE
Data are reference value and are measured between each terminal and ground.
CAUTION:
When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.Monitored item [Unit] Content Condition Display value
SHIFT ACT/R MON
[ON/OFF]Operating condition of
actuator motor relay (inte-
grated in transfer control
unit)
lVehicle stopped
lEngine running
lFor A/T models, A/T
selector lever “N” posi-
tion with brake pedal
depressed.
lFor M/T models, M/T
shift lever neutral posi-
tion with clutch and
brake pedal
depressed.When 4WD shift switch is
operatedON
When 4WD shift switch is
not operatedOFF
Te r m i n a lWire
colorItem Condition Data (Approx.)
25 LG Ignition switch monitorIgnition switch: ON Battery voltage
Ignition switch: OFF 0V
27 L Actuator motor power supplyIgnition switch: ON Battery voltage
Ignition switch: OFF
(5 seconds after ignition switch is turned OFF)0V
32 B Ground Always 0V
40 V Transfer shut off relayIgnition switch: ON 0V
Ignition switch: OFF
(5 seconds after ignition switch is turned OFF)Battery voltage

TROUBLE DIAGNOSIS FOR SYSTEM
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DIAGNOSTIC PROCEDURE
1.CHECK POWER SUPPLY
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Check voltage between transfer control unit harness connector
terminal and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between transfer control unit harness connector
terminals and ground.
OK or NG
OK >> GO TO 2.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.
l10A fuse (No. 63, located in the fuse and relay box).
l40A fusible link (No.J, located in the fuse and fusible link box).
lHarness for short or open between battery and transfer shut off relay 1 harness connector E84
terminal 3.
lHarness for short or open between transfer control unit harness connector M106 terminal 27
and transfer shut off relay 1 harness connector E84 terminal 5.
lHarness for short or open between ignition switch and transfer shut off relay 1 harness connec-
tor E84 terminal 1.
lHarness for short or open between transfer shut off relay 1 harness connector E84 terminal 2
and ground.
lHarness for short or open between ignition switch and transfer control unit harness connector
M105 terminal 25.
lBattery and ignition switch. Refer toPG-4, "POWER SUPPLY ROUTING CIRCUIT".
lTransfer shut off relay 1. Refer toTF-54, "COMPONENT INSPECTION".
Connector Terminal Voltage (Approx.)
M105 25 - Ground
0V
M106 27 - Ground
SDIA3371E
Connector Terminal Voltage (Approx.)
M105 25 - Ground
Battery voltage
M106 27 - Ground
SDIA3372E

TF-80
TROUBLE DIAGNOSIS FOR SYSTEM
2.CHECK GROUND CIRCUIT
1. Turn ignition switch "OFF". (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector.
3. Check continuity between transfer control unit harness connec-
tor M106 terminal 32 and ground.
Also check harness for short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to power in harness or con-
nectors.
3.CHECK POWER SUPPLY SIGNAL
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Connect transfer control unit harness connector.
3. Check voltage between transfer control unit harness connector
terminal and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between transfer control unit harness connector
terminal and ground.
OK or NG
OK >> GO TO 4.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.
lHarness for short or open between battery and trans-
fer shut off relay 2 harness connector E85 terminal 1.
lHarness for short or open between transfer shut off relay 2 harness connector E85 terminal 2
and transfer control unit harness connector M106 terminal 40.
lTransfer shut off relay 2. Refer toTF-54, "COMPONENT INSPECTION".
4.CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer toTF-38, "
Transfer Control Unit Input/Output Signal Ref-
erence Values".
OK or NG
OK-1 >> With CONSULT-II: GO TO 5.
OK-2 >> Without CONSULT-II: GO TO 6.
NG >> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts. Continuity should exist.
SDIA2818E
Connector Terminal Voltage (Approx.)
M106 40 - Ground Battery voltage
SDIA2819E
Connector Terminal Voltage (Approx.)
M106 40 - Ground 0V
SDIA2820E