NISSAN NAVARA 2005 Repair Workshop Manual

TF-34
TROUBLE DIAGNOSIS
MDWA0057E

TROUBLE DIAGNOSIS
TF-35
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MDWA0058E

TF-36
TROUBLE DIAGNOSIS
MDWA0059E

TROUBLE DIAGNOSIS
TF-37
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MDWA0060E

TF-38
TROUBLE DIAGNOSIS
Trouble Diagnosis Chart for Symptoms
EDS0031U
If 4WD warning lamp turns ON, perform self-diagnosis. Refer toTF-49, "Self-Diagnostic Procedure".
Transfer Control Unit Input/Output Signal Reference ValuesEDS0031V
TRANSFER CONTROL UNIT INSPECTION TABLE
Specifications with CONSULT-II
Symptom Condition Check item Reference page
4WD shift indicator lamp and 4LO indicator
lamp do not turn ON
(4WD shift indicator lamp and 4LO indicator
lamp check)Ignition switch: ONPower supply and ground for transfer
control unit
TF-88
Transfer shut off relay
Combination meter
4WD warning lamp does not turn ON
(4WD warning lamp check)Ignition switch: ONPower supply and ground for transfer
control unit
TF-91
Transfer shut off relay
Combination meter
4WD shift indicator lamp or 4LO indicator
lamp does not changeEngine running4WD shift switch
TF-94
Wait detection switch
4LO switch
AT P s w i t c h
Transfer inner parts
ATP warning lamp does not turn ON Engine runningCAN communication line
TF-96
4WD shift switch
PNP switch signal
AT P s w i t c h
Combination meter
Transfer inner parts
4WD shift indicator lamp repeats flashing Engine runningWait detection switch
TF-98
4LO switch
Transfer inner parts
4WD warning lamp flashes slowly
Slow flashing: 1 time/2 secondsWhile drivingTire size is different between front and
rear of vehicle.TF-99
Monitored item [Unit] Content Condition Display value
VHCL/S SEN·FR [km/h]
or [mph]Wheel speed (Front wheel)Vehicle stopped 0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condi-
tion.Approximately
equal to the indica-
tion on speedome-
ter (Inside of±10%)
VHCL/S SEN·RR [km/h]
or [mph]Wheel speed (Rear wheel)Vehicle stopped 0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condi-
tion.Approximately
equal to the indica-
tion on speedome-
ter (Inside of±10%)
ENGINE SPEED [rpm] Engine speedEngine stopped
(Engine speed: Less than 400 rpm)0rpm
Engine running
(Engine speed: 400 rpm or more)Approximately
equal to the indica-
tion on tachometer
BATTERY VOLT [V]Power supply voltage for
transfer control unitIgnition switch: ON Battery voltage

TROUBLE DIAGNOSIS
TF-39
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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
4L POSI SW [ON/OFF] Condition of 4LO switch
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: 4LO ON
Except the above OFF
ATP SWITCH [ON/OFF] Condition of ATP switch
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
WAIT DETCT SW [ON/
OFF]Condition of wait detection
switch
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:
4H and 4LOON
4WD shift switch: 2WD 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
VHCL/S COMP [km/h]
or [mph]Vehicle speedVehicle stopped 0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tires under standard condi-
tion.Approximately
equal to the indica-
tion on speedome-
ter (Inside of±10%)
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 Monitored item [Unit] Content Condition Display value

TF-40
TROUBLE DIAGNOSIS
SHIFT AC MON1 [ON/
OFF]Check signal for transfer
control unit signal output
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 ACT 2 [ON/OFF]Output condition to actua-
tor motor (counterclock-
wise)
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:
4LOto4Hor4Hto2WD
or 4LO to 2WDON
Except the above OFF
SHIFT AC MON2 [ON/
OFF]Check signal for transfer
control unit signal output
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:
4LOto4Hor4Hto2WD
or 4LO to 2WDON
Except the above OFF
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
SHIFT POS SW1 [ON/
OFF]Condition of actuator posi-
tion switch 1
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:
2WD and 4LOON
4WD shift switch: 4H OFF
SHIFT POS SW2 [ON/
OFF]Condition of actuator posi-
tion switch 24WD shift switch: 4LO ON
4WD shift switch:
2WD and 4HOFF
SHIFT POS SW3 [ON/
OFF]Condition of actuator posi-
tion switch 34WD shift switch:
2WD and 4HON
4WD shift switch: 4LO OFF
SHIFT POS SW4 [ON/
OFF]Condition of actuator posi-
tion switch 44WD shift switch:
4H and 4LOON
4WD shift switch: 2WD OFF
4WD FAIL LAMP [ON/
OFF]4WD warning lamp condi-
tion4WD warning lamp: ON ON
4WD warning lamp: OFF OFF Monitored item [Unit] Content Condition Display value

TROUBLE DIAGNOSIS
TF-41
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TFSpecifications Between Transfer Control Unit Terminals
TRANSFER CONTROL UNIT TERMINAL CONNECTOR LAYOUT
NOTE:
Data are reference value and are measured between each terminal and ground.
2WD IND [ON/OFF]Rear indicator of 4WD shift
indicator lamp conditionRear indicator of 4WD shift indicator lamp: ON ON
Rear indicator of 4WD shift indicator lamp: OFF OFF
4H IND [ON/OFF]Front and center indicator
of 4WD shift indicator lamp
conditionFront and center indicator of 4WD shift indicator lamp:
ONON
Front and center indicator of 4WD shift indicator lamp:
OFFOFF
4L IND [ON/OFF]4LO indicator lamp condi-
tion4LO indicator lamp: ON ON
4LO indicator lamp: OFF OFF Monitored item [Unit] Content Condition Display value
SDIA3402E
TerminalWire
colorItem Condition Data (Approx.)
1 L CAN-H – –
2 P CAN-L – –
3 SB K-LINE (CONSULT-II signal) – –
6 B Ground Always 0V
10 LG Actuator position switch 1
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.4WD shift switch: 2WD and 4LO 0V
4WD shift switch: 4H Battery voltage
11 W Actuator position switch 24WD shift switch: 4LO 0V
4WD shift switch: 2WD and 4H Battery voltage
12 BR Actuator position switch 34WD shift switch: 2WD and 4H 0V
4WD shift switch: 4LO Battery voltage
13 V Actuator position switch 44WD shift switch: 4H and 4LO 0V
4WD shift switch: 2WD Battery voltage
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-42
TROUBLE DIAGNOSIS
17 O Wait detection switch
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.4WD shift switch: 4H and 4LO 0V
4WD shift switch: 2WD Battery voltage
18 B Ground Always 0V
19 RPower supply
(Memory back-up)Ignition switch: ON
Battery voltage
Ignition switch: OFF
23 R ATP switch
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.4WD shift switch:
4H to 4LO or 4LO to 4H
(While actuator motor is operating.)0V
Except the above Battery voltage
24 Y 4LO switch
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.4WD shift switch: 4LO 0V
Except the above Battery voltage
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 Te r m i n a lWire
colorItem Condition Data (Approx.)

TROUBLE DIAGNOSIS
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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
32 B Ground Always 0V
33
(For M/T
models)P Park/Neutral position switch Ignition switch: ONM/T shift lever neutral position 0V
Except the above Battery voltage
35 V4WD shift indicator lamp
(Rear indicator)
Engine runningRear indicator of 4WD shift indicator
lamp: ON0V
Rear indicator of 4WD shift indicator
lamp: OFFBattery voltage
36 BR4WD shift indicator lamp
(Front and center indicator)Front and center indicator of 4WD shift
indicator lamp: ON0V
Front and center indicator of 4WD shift
indicator lamp: OFFBattery voltage
37 Y 4LO indicator lamp4LO indicator lamp: ON 0V
4LO indicator lamp: OFF Battery voltage
38 P 4WD warning lamp4WD warning lamp: ON 0V
4WD warning lamp: OFF Battery voltage
39
(For A/T
models)LG ATP warning lamp
lVehicle stopped
lEngine running
lA/T selector
lever “P” position
lBrake pedal
depressed4WD shift switch:
4H to 4LO or 4LO to 4H
(While actuator motor is operating.)Battery voltage
Except the above 0V
40 V Transfer shut off relayIgnition switch: ON 0V
Ignition switch: OFF
(5 seconds after ignition switch is turned OFF)Battery voltage
42 LG Transfer shift high relay
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.4WD shift switch:
2WD to 4H or 4H to 4LO or 2WD to 4LO0V
Except the above Battery voltage TerminalWire
colorItem Condition Data (Approx.)