2005 NISSAN NAVARA ignition

TROUBLE DIAGNOSIS FOR SYSTEM
TF-59
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6.CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Replace transfer control unit. Refer toTF-100, "
Removal and Installation".
COMPONENT INSPECTION
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect 4LO switch harness connector.
3. Remove 4LO switch. Refer toTF-21, "
Location of Electrical Parts".
4. Push and release 4LO switch and check continuity between
4LO switch terminals 12 and 13.
5. If NG, replace the 4LO switch. Refer toTF-21, "
Location of Elec-
trical Parts".
4WD Shift SwitchEDS00323
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.Terminal Condition Continuity
12 - 13Push 4LO switch Yes
Release 4LO switch No
PDIA0204E
Monitored item [Unit] Content Condition Display value
2WDSWITCH[ON/
OFF]Input condition from 4WD
shift switch4WD shift switch: 2WD ON
4WD shift switch: 4H and 4LO OFF
4H SWITCH [ON/OFF]Input condition from 4WD
shift switch4WD shift switch: 4H ON
4WD shift switch: 2WD and 4LO OFF
4L SWITCH [ON/OFF]Input condition from 4WD
shift switch4WD shift switch: 4LO ON
4WD shift switch: 2WD and 4H OFF
4WD MODE [2H/4H/4L]Control status of 4WD
(Output condition of 4WD
shift indicator lamp and
4LO indicator lamp)4WD shift switch
(Engine running)2WD 2H
4H 4H
4LO 4L
TerminalWire
colorItem Condition Data (Approx.)
14 G 4WD shift switch (2WD)
Ignition switch: ON4WD shift switch: 2WD Battery voltage
4WD shift switch: 4H and 4LO 0V
15 O 4WD shift switch (4H)4WD shift switch: 4H Battery voltage
4WD shift switch: 2WD and 4LO 0V
16 W 4WD shift switch (4LO)4WD shift switch: 4LO Battery voltage
4WD shift switch: 2WD and 4H 0V

TF-60
TROUBLE DIAGNOSIS FOR SYSTEM
DIAGNOSTIC PROCEDURE
1.CHECK 4WD SHIFT SWITCH SIGNAL
With CONSULT-II
1. Turn ignition switch “ON”.
2. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3. Read out ON/OFF switching action of the “2WD SWITCH”, “4H
SWITCH”, “4L SWITCH” while operating 4WD shift switch.
Without CONSULT-II
1. Turn ignition switch “ON”.
2. Check voltage between transfer control unit harness connector
terminals and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
SDIA2382E
Connector Terminal ConditionVoltage
(Approx.)
M10514 - Ground4WD shift switch: 2WD Battery voltage
4WD shift switch: 4H and 4LO 0V
15 - Ground4WD shift switch: 4H Battery voltage
4WD shift switch: 2WD and 4LO 0V
16 - Ground4WD shift switch: 4LO Battery voltage
4WD shift switch: 2WD and 4H 0V
SDIA3365E

TROUBLE DIAGNOSIS FOR SYSTEM
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2.CHECK 4WD SHIFT SWITCH POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect 4WD shift switch harness connector.
3. Check voltage between 4WD shift switch harness connector ter-
minal 1 and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between 4WD shift switch harness connector ter-
minal 1 and ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Check harness for short or open between 4WD shift
switch harness connector M51 terminal 1 and transfer
shut off relay 2 harness connector E85 terminal 5 and
10A fuse (No. 64 located in the fuse and relay box). If any items are damaged, repair or replace
damaged parts.
2. Perform trouble diagnosis for power supply circuit. Refer toTF-52, "
Power Supply Circuit For
Transfer Control Unit".
3.CHECK HARNESS BETWEEN 4WD SHIFT SWITCH AND TRANSFER CONTROL UNIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the 4WD shift switch harness connector.
3. Check continuity between the following terminals.
–Transfer control unit harness connector M105 terminal 14 and
4WD shift switch harness connector M51 terminal 3.
–Transfer control unit harness connector M105 terminal 15 and
4WD shift switch harness connector M51 terminal 5.
–Transfer control unit harness connector M105 terminal 16 and
4WD shift switch harness connector M51 terminal 6.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
Connector Terminal Voltage (Approx.)
M51 1 - Ground 0V
SDIA2803E
Connector Terminal Voltage (Approx.)
M51 1 - Ground Battery voltage
SDIA2802E
Continuity should exist.
SDIA3366E

TF-62
TROUBLE DIAGNOSIS FOR SYSTEM
4.CHECK 4WD SHIFT SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove 4WD shift switch harness connector.
3. Operate 4WD shift switch and check continuity between 4WD
shift switch terminals.
OK or NG
OK >> GO TO 5.
NG >> Replace 4WD shift switch.
5.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 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.
6.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
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove 4WD shift switch harness connector.
3. Operate 4WD shift switch and check continuity between 4WD
shift switch terminals.
4. If NG, replace the 4WD shift switch.
Terminal Condition Continuity
1-34WD shift switch: 2WD Yes
4WD shift switch: 4H and 4LO No
1-54WD shift switch: 4H Yes
4WD shift switch: 2WD and 4LO No
1-64WD shift switch: 4LO Yes
4WD shift switch: 2WD and 4H No
SDIA2805E
Terminal Condition Continuity
1-34WD shift switch: 2WD Yes
4WD shift switch: 4H and 4LO No
1-54WD shift switch: 4H Yes
4WD shift switch: 2WD and 4LO No
1-64WD shift switch: 4LO Yes
4WD shift switch: 2WD and 4H No
SDIA2805E

TROUBLE DIAGNOSIS FOR SYSTEM
TF-65
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2.CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND WAIT DETECTION SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the wait detection switch harness connector.
3. Check continuity between transfer control unit harness connec-
tor M105 terminal 17 and wait detection switch harness connec-
tor F39 terminal 10.
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 wait detection switch harness connector.
3. Check continuity between wait detection switch harness con-
nector F39 terminal 11 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 WAIT DETECTION SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect wait detection switch harness connector.
3. Remove wait detection switch. Refer toTF-21, "
Location of Electrical Parts".
4. Push and release wait detection switch and check continuity
between wait detection switch terminals 10 and 11.
OK or NG
OK >> GO TO 5.
NG >> Replace wait detection switch. Refer toTF-21, "
Location
of Electrical Parts".
5.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 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.
SDIA3368E
Continuity should exist.
PDIA0207E
Terminal Condition Continuity
10 - 11Push wait detection switch Yes
Release wait detection switch No
PDIA0208E

TF-66
TROUBLE DIAGNOSIS FOR SYSTEM
6.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
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect wait detection switch harness connector.
3. Remove wait detection switch. Refer toTF-21, "
Location of Electrical Parts".
4. Push and release wait detection switch and check continuity
between wait detection switch terminals 10 and 11.
5. If NG, replace the wait detection switch. Refer toTF-21, "
Loca-
tion of Electrical Parts".
PNP Switch Signal (TCM)EDS00325
DIAGNOSTIC PROCEDURE
1.CHECK DTC WITH TCM
Perform self-diagnosis with TCM. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE".
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
2.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 3.
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.
3.CHECK DTC
Perform the self-diagnosis, after driving vehicle.
OK or NG
OK >>INSPECTION END
NG >> Perform self-diagnosis with TCM again. Refer toAT-80, "
SELF-DIAGNOSTIC RESULT MODE".
Terminal Condition Continuity
10 - 11Push wait detection switch Yes
Release wait detection switch No
PDIA0208E

TROUBLE DIAGNOSIS FOR SYSTEM
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Actuator MotorEDS00326
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 Content Condition Display value
SHIFT ACT 1 [ON/OFF]Output condition to actua-
tor motor (clockwise)
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.4WD shift switch:
2WDto4Hor4Hto4LO
or 2WD to 4LOON
Except the above OFF
SHIFT AC MON1 [ON/
OFF]Check signal for transfer
control unit signal output4WD shift switch:
2WDto4Hor4Hto4LO
or 2WD to 4LOON
Except the above OFF
SHIFT ACT 2 [ON/OFF]Output condition to actua-
tor motor (counterclock-
wise)4WD shift switch:
4LO to 4H or 4H to 2WD
or 4LO to 2WDON
Except the above OFF
SHIFT AC MON2 [ON/
OFF]Check signal for transfer
control unit signal output4WD shift switch:
4LO to 4H or 4H to 2WD
or 4LO to 2WDON
Except the above OFF
TerminalWire
colorItem Condition Data (Approx.)
27 L Actuator motor power supplyIgnition switch: ON Battery voltage
Ignition switch: OFF
(5 seconds after ignition switch is turned OFF)0V
28 BR Actuator motor (+)
lVehicle stopped
lEngine running
lFor A/T models,
A/T selector
lever “N” position
with brake pedal
depressed.
lFor M/T models,
M/T shift lever
neutral position
with clutch and
brake pedal
depressed.When 4WD shift switch is operated
(while actuator motor is operating)Battery voltage
®0V
When 4WD shift switch is not operated 0V
31 G Actuator motor (-) Always 0V
42 LG Transfer shift high relay4WD shift switch:
2WD to 4H or 4H to 4LO or 2WD to 4LO0V
Except the above Battery voltage
47 OTransfer shift high relay moni-
tor4WD shift switch:
2WD to 4H or 4H to 4LO or 2WD to 4LO
(while actuator motor is operating)Battery voltage
®0V
Except the above 0V
48 RTransfer shift low relay moni-
tor4WD shift switch:
4LO to 4H or 4H to 2WD or 4LO to 2WD
(while actuator motor is operating)Battery voltage
®0V
Except the above 0V
50 Y Transfer shift low relay4WD shift switch:
4LO to 4H or 4H to 2WD or 4LO to 2WD0V
Except the above Battery voltage

TF-70
TROUBLE DIAGNOSIS FOR SYSTEM
2.CHECK ACTUATOR MOTOR POWER SUPPLY CIRCUIT
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
M106 terminal 27 and ground.
4. Turn ignition switch “ON”.
5. Check voltage between transfer control unit harness connector
M106 terminal 27 and ground.
OK or NG
OK >> GO TO 3.
NG >> 1. Check harness for short or open between transfer
control unit harness connector M106 terminal 27 and
transfer shut off relay 2 harness connector E85 termi-
nal 5 and 10A fuse (No. 63, located in the fuse and relay box). If any items are damaged, repair
or replace damaged parts.
2. Perform trouble diagnosis for power supply circuit. Refer toTF-52, "
Power Supply Circuit For
Transfer Control Unit".
Connector Terminal Voltage (Approx.)
M106 27 - Ground 0V
SDIA2808E
Connector Terminal Voltage (Approx.)
M106 27 - Ground Battery voltage
SDIA2807E