4WD NISSAN NAVARA 2005 Repair Workshop Manual

TROUBLE DIAGNOSIS FOR SYSTEM
TF-83
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DIAGNOSTIC PROCEDURE
1.CHECK ATP SWITCH SIGNAL
With CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3. Read out the value of “ATP SWITCH”.
Without CONSULT-II
1. Start engine.
2. Check voltage between transfer control unit harness connector
terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND ATP SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the ATP switch harness connector.
3. Check continuity between transfer control unit harness connec-
tor M105 terminal 23 and ATP switch harness connector F41
terminal 8.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
Condition Display value
lVehicle stopped
lEngine running
lA/T selector lever
“N” position with
brake pedal
depressed.4WD shift switch: 4H to 4LO or 4LO to 4H
(While actuator motor is operating.)ON
Except the above OFF
SDIA2391E
Connector Terminal ConditionVoltage
(Approx.)
M10523 -
Ground
lVehicle stopped
lEngine running
lA/T selector lever
“N” position with
brake pedal
depressed.4WD shift switch:
4H to 4LO or 4LO to
4H
(While actuator motor
is operating.)0V
Except the aboveBattery
voltage
SDIA3375E
Continuity should exist.
SDIA3376E

TF-84
TROUBLE DIAGNOSIS FOR SYSTEM
3.CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect ATP switch harness connector.
3. Check continuity between ATP switch harness connector F41
terminal 9 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 ATP SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Remove ATP switch. Refer toTF-21, "
Location of Electrical Parts".
3. Push and release ATP switch and check continuity between ATP
switch terminals 8 and 9.
OK or NG
OK >> GO TO 5.
NG >> Replace ATP switch. Refer toTF-21, "
Location of Elec-
trical 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.
6.CHECK ATP WARNING LAMP
1. Turn ignition switch “ON”. (Do not start engine.)
2. Shift A/T selector lever to “N” position and engage the parking brake.
3. Switch 4WD shift switch from 4H to 4LO or 4LO to 4H.
Does ATP warning lamp turn
“ON”, while actuator motor is operating?
YES >>INSPECTION END
NO >> Go toTF-96, "
ATP Warning Lamp Does Not Turn ON". Continuity should exist.
SDIA2394E
Terminal Condition Continuity
8-9Push ATP switch Yes
Release ATP switch No
SDIA2395E

TF-88
TROUBLE DIAGNOSIS FOR SYMPTOMS
TROUBLE DIAGNOSIS FOR SYMPTOMS
PFP:00007
4WD Shift Indicator Lamp and 4LO Indicator Lamp Do Not Turn ONEDS0032D
SYMPTOM:
4WD shift indicator lamp and 4LO indicator lamp do not turn ON for approx. 1 second when turning
ignition switch to “ON”.

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-91
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4.CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Check continuity between the following terminals.
–Transfer control unit harness connector M106 terminal 35 and
combination meter harness connector M23 terminal 30.
–Transfer control unit harness connector M106 terminal 36 and
combination meter harness connector M23 terminal 27.
–Transfer control unit harness connector M106 terminal 37 and
combination meter harness connector M23 terminal 29.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK INDICATOR LAMP CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Connect combination meter harness connector.
3. Disconnect transfer control unit harness connector.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Ground the following terminals using suitable wiring.
–Transfer control unit harness connector M106 terminal 35 and
ground.
–Transfer control unit harness connector M106 terminal 36 and
ground.
–Transfer control unit harness connector M106 terminal 37 and
ground.
Do indicator lamps turn on?
OK >> GO TO 6.
NG >> Replace combination meter. Refer toDI-27, "
Removal
and Installation of Combination Meter".
6.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.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 >>INSPECTION END
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.
4WD Warning Lamp Does Not Turn ONEDS0032E
SYMPTOM:
4WD warning lamp does not turn ON when turning ignition switch to “ON”.Continuity should exist.
SDIA2823E
SDIA3451E

TF-94
TROUBLE DIAGNOSIS FOR SYMPTOMS
4.CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Check continuity between transfer control unit harness connec-
tor M106 terminal 38 and combination meter harness connector
M23 terminal 26.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK INDICATOR LAMP CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Connect combination meter harness connector.
3. Disconnect transfer control unit harness connector.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Ground the following terminals using suitable wiring.
–Transfer control unit harness connector M106 terminal 38 and
ground.
Do indicator lamps turn on?
OK >> GO TO 6.
NG >> Replace combination meter. Refer toDI-27, "
Removal
and Installation of Combination Meter".
6.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.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 >>INSPECTION END
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.
4WD Shift Indicator Lamp or 4LO Indicator Lamp Does Not ChangeEDS0032F
SYMPTOM:
4WD shift indicator lamp or 4LO indicator lamp does not change when switching 4WD shift switch.Continuity should exist.
SDIA3403E
SDIA3452E

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-95
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DIAGNOSTIC PROCEDURE
1.CONFIRM THE SYMPTOM
Confirm 4WD shift indicator lamp and 4LO indicator lamp when ignition switch is turned to ON.
Do 4WD shift indicator lamp and 4LO indicator lamp turn on?
YES >> GO TO 2.
NO >> Go toTF-88, "
4WD Shift Indicator Lamp and 4LO Indicator Lamp Do Not Turn ON".
2.CHECK SYSTEM FOR 4WD SHIFT SWITCH
Perform trouble diagnosis for 4WD shift switch system. Refer toTF-59, "
4WD Shift Switch".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK SYSTEM FOR WAIT DETECTION SWITCH
Perform trouble diagnosis for wait detection switch system. Refer toTF-63, "
Wait Detection Switch".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SYSTEM FOR 4LO SWITCH
Perform trouble diagnosis for 4LO switch system. Refer toTF-56, "
4LO Switch".
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK SYSTEM FOR ATP SWITCH
Perform trouble diagnosis for ATP switch system. Refer toTF-82, "
AT P S w i t c h".
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 7.
7.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 8.
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.

TF-96
TROUBLE DIAGNOSIS FOR SYMPTOMS
8.CHECK TRANSFER INNER PARTS
1. Disassemble transfer assembly. Refer toTF-112, "
Disassembly and Assembly".
2. Check transfer inner parts.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
ATP Warning Lamp Does Not Turn ONEDS0032G
SYMPTOM:
ATP warning lamp does not turn ON when 4WD shift switch from “4H” to “4LO” or “4LO” to “4H” with
A/T selector lever in “N” position.
DIAGNOSTIC PROCEDURE
1.CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer toTF-49, "
Self-Diagnostic Procedure".
Do the self-diagnostic results indicate CAN communication?
YES >> Perform trouble diagnosis for CAN communication line. Refer toTF-82, "CAN Communication
Line".
NO >> GO TO 2.
2.CHECK SYSTEM FOR 4WD SHIFT SWITCH
Perform trouble diagnosis for 4WD shift switch system. Refer toTF-59, "
4WD Shift Switch".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK SYSTEM FOR PNP SWITCH SIGNAL
Perform trouble diagnosis for PNP switch signal system. Refer toTF-66, "
PNP Switch Signal (TCM)".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SYSTEM FOR ATP SWITCH
Perform trouble diagnosis for ATP switch system. Refer toTF-82, "
AT P S w i t c h".
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.

TF-98
TROUBLE DIAGNOSIS FOR SYMPTOMS
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.
10.CHECK TRANSFER INNER PARTS
1. Disassemble transfer assembly. Refer toTF-112, "
Disassembly and Assembly".
2. Check transfer inner parts.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
4WD Shift Indicator Lamp Repeats FlashingEDS0032H
SYMPTOM:
4WD shift indicator lamp keeps flashing.
DIAGNOSTIC PROCEDURE
1.CONFIRM THE SYMPTOM
1. Set4WDshiftswitchto“2WD”.
2. Move vehicle forward and backward, or drive straight increasing or decreasing under 20 km/h (12 MPH).
Dose 4WD shift indicator lamp keep flashing?
YES >> GO TO 2.
NO >>INSPECTION END
2.CHECK SYSTEM FOR WAIT DETECTION SWITCH
Perform trouble diagnosis for wait detection switch system. Refer toTF-63, "
Wait Detection Switch".
OK or NG
OK >> GO TO 3.
NG >> Repair or replace damaged parts.
3.CHECK SYSTEM FOR 4LO SWITCH
Perform trouble diagnosis for 4LO switch system. Refer toTF-56, "
4LO Switch".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 5.

TROUBLE DIAGNOSIS FOR SYMPTOMS
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TF
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 TRANSFER INNER PARTS
1. Disassemble transfer assembly. Refer toTF-112, "
Disassembly and Assembly".
2. Check transfer inner parts.
OK or NG
OK >>INSPECTION END
NG >> Repair or replace damaged parts.
4WD Warning Lamp Flashes SlowlyEDS0032I
SYMPTOM:
While driving, 4WD warning lamp flashes slowly. (Continues to flash until turning ignition switch OFF.)
NOTE:
Slow flashing: 1 time/2 seconds
DIAGNOSTIC PROCEDURE
1.CHECK TIRES
Check the following.
lTire pressure
lWear condition
lLongitudinal tire size (There is no difference between longitudinal tires.)
OK or NG
OK >> GO TO 2.
NG >> Repair or replace damaged parts.
2.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 3.
3.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 >>INSPECTION END
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.

TF-100
TRANSFER CONTROL UNIT
TRANSFER CONTROL UNIT
PFP:33084
Removal and InstallationEDS0032J
REMOVAL
1. Switch 4WD shift switch to 2WD and set transfer assembly to 2WD.
CAUTION:
When removal transfer control unit, transfer state must be at 2WD or AUTO.
2. Turn the ignition switch OFF and disconnect the battery cables.
3. Remove the lower instrument panel LH (LHD models) or lower instrument panel RH (RHD models). Refer
toIP-13, "
LOWER INSTRUMENT PANEL LH"(LHD models) orIP-13, "LOWER INSTRUMENT PANEL
LH"(RHD models).
4. Disconnect the two transfer control unit connectors.
5. Remove the transfer control unit bolts.
6. Remove the transfer control unit.
INSTALLATION
Installation is in the reverse order of removal.
lWhen installing the transfer control unit, tighten bolts to the specified torque.
CAUTION:
Do not connect harness connector to transfer control unit when 4WD shift switch is at 4LO.
lAfter the installation, check 4WD shift indicator pattern. If NG, adjust position between transfer assembly
and transfer control unit. Refer toTF-4, "
Precautions for Transfer Assembly and Transfer Control Unit
Replacement".
SDIA3201E
Transfer control unit bolts : 3.4 N·m (0.35 kg-m, 30 in-lb)