engine NISSAN NAVARA 2005 Repair Workshop Manual

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
TF-43
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TF
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.)

TF-44
TROUBLE DIAGNOSIS
CAUTION:
When using a circuit tester to measure voltage for inspection, be sure not to extend forcibly any connector terminals.
CONSULT-II Function (ALL MODE AWD/4WD)EDS0031W
FUNCTION
CONSULT-II can display each diagnostic item using the diagnostic test modes shown following.
CONSULT-II SETTING PROCEDURE
CAUTION:
If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be
detected in self-diagnosis depending on control unit which carry out CAN communication.
NOTE:
For details, refer to the separate “CONSULT-II Operations Manual”.
1. Turn ignition switch “OFF”.
2. Connect CONSULT-II and CONSULT-II CONVERTER to data
link connector on vehicle.
3. Turn ignition switch “ON”.
44 Y Power supplyIgnition switch: ON Battery voltage
Ignition switch: OFF
(5 seconds after ignition switch is turned OFF)0V
45 GR Power supplyIgnition switch: ON Battery voltage
Ignition switch: OFF
(5 seconds after ignition switch is turned OFF)0V
47 OTransfer shift high relay moni-
tor
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 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 Te r m i n a lWire
colorItem Condition Data (Approx.)
Diagnostic test mode FunctionReference
page
Self-diagnostic results
lSelf-diagnostic results can be read and erased quickly.TF-45
Data monitorlInput/Output data in the transfer control unit can be read.TF-47
CAN diagnostic support monitorlThe results of transmit/receive diagnosis of CAN communication can be read.LAN-15
BBIA0538E

TROUBLE DIAGNOSIS
TF-45
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TF
4. Touch “START (NISSAN BASED VHCL)”.
5. Touch “ALL MODE AWD/4WD”.
If “ALL MODE AWD/4WD” is not indicated, go toGI-50, "
CON-
SULT-II Data Link Connector (DLC) Circuit".
6. Perform each diagnostic test mode according to each service
procedure.
SELF-DIAG RESULT MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer toTF-44, "CONSULT-II SETTING PROCEDURE"
.
2. With engine at idle, touch “SELF-DIAG RESULTS”.
Display shows malfunction experienced since the last erasing
operation.
NOTE:
The details for "TIME" are as follows:
l"0": Error currently detected with transfer control unit.
lExcept for "0": Error detected in the past and memorized with
transfer control unit.
Detects frequency of driving after DTC occurs (frequency of
turning ignition switch "ON/OFF").
Display Item List
BCIA0029E
BCIA0030E
SDIA2687E
Items (CONSULT-II screen
terms)Diagnostic item is detected when... Check item
*INITIAL START*
[P1801]Due to removal of battery which cuts off power supply to transfer
control unit, self-diagnosis memory function is suspended.TF-52, "
Power Supply Circuit For
Transfer Control Unit"
CONTROL UNIT 1
[P1802]Malfunction is detected in the memory (RAM) system of transfer
control unit.TF-54, "Transfer Control Unit"
CONTROL UNIT 2
[P1803]Malfunction is detected in the memory (ROM) system of transfer
control unit.TF-54, "Transfer Control Unit"
CONTROL UNIT 3
[P1804]Malfunction is detected in the memory (EEPROM) system of trans-
fer control unit.TF-54, "Transfer Control Unit"
VHCL SPEED SEN·AT
[P1807]lMalfunction is detected in output shaft revolution signal that is
output from TCM through CAN communication.
lImproper signal is input while driving.TF-55, "
Output Shaft Revolution
Signal (TCM)"
VHCL SPEED SEN·ABS
[P1808]
lMalfunction is detected in vehicle speed signal that is output from
ABS actuator and electric unit (control unit) through CAN commu-
nication.
lImproper signal is input while driving.TF-55, "
Vehicle Speed Sensor
(ABS)"

TF-46
TROUBLE DIAGNOSIS
CAUTION:
If “CAN COMM CIRCUIT [U1000]” is displayed with other DTCs, first perform the trouble diagnosis for CAN communication
line.
NOTE:
If “SHIFT ACT POSI SW [P1818]” or “SHIFT ACT CIR [P1819]” is displayed, first erase self-diagnostic results. (“SHIFT ACT POSI SW
[P1818]” or “SHIFT ACT CIR [P1819]” may be displayed after installing transfer control unit or transfer assembly.)
How to Erase Self-diagnostic Results
1. Perform applicable inspection of malfunctioning item and then repair or replace.
2. Start engine and select “SELF-DIAG RESULTS” mode for “ALL MODE AWD/4WD” with CONSULT-II.
3. Touch “ERASE” on CONSULT-II screen to erase DTC memory.
CAUTION:
If memory cannot be erased, perform applicable diagnosis.
CONTROL UNIT 4
[P1809]AD converter system of transfer control unit is malfunctioning.TF-54, "Transfer Control Unit"
4L POSI SW TF
[P1810]Improper signal from 4LO switch is input due to open or short circuit.TF-56, "4LO Switch"
BATTERY VOLTAGE
[P1811]Power supply voltage for transfer control unit is abnormally low
while driving.TF-52, "Power Supply Circuit For
Transfer Control Unit"
4WD MODE SW
[P1813]More than two switch inputs are simultaneously detected due to
short circuit of 4WD shift switch.TF-59, "4WD Shift Switch"
4WD DETECT SWITCH
[P1814]Improper signal from wait detection switch is input due to open or
short circuit.TF-63, "Wait Detection Switch"
PNP SW/CIRC
[P1816]When A/T PNP switch signal is malfunction or communication error
between the vehicles.TF-66, "PNP Switch Signal
(TCM)"
SHIFT ACTUATOR
[P1817]
lMotor does not operate properly due to open or short circuit in
actuator motor.
lMalfunction is detected in the actuator motor. (When 4WD shift
switch is operated and actuator motor is not operated)
lMalfunction is detected in transfer shift high relay and transfer
shift low relay.TF-67, "
Actuator Motor"
SHIFT ACT POSI SW
[P1818]lImproper signal from actuator position switch is input due to open
or short circuit.
lMalfunction is detected in actuator position switch.TF-75, "
Actuator Position
Switch"
SHIFT ACT CIR
[P1819]lMalfunction is detected in transfer shut off relay 1 and transfer
shut off relay 2.
lMalfunction occurs in transfer control device drive circuit.TF-52, "
Power Supply Circuit For
Transfer Control Unit",TF-78,
"Transfer Control Device"
ENGINE SPEED SIG
[P1820]lMalfunction is detected in engine speed signal that is output from
ECM through CAN communication.
lImproper signal is input while driving.TF-81, "
Engine Speed Signal
(ECM)"
CAN COMM CIRCUIT
[U1000]Malfunction has been detected from CAN communication line.TF-82, "CAN Communication
Line"
NO DTC IS DETECTED.
FURTHER TESTING MAY
BE REQUIRED.No NG item has been detected. — Items (CONSULT-II screen
terms)Diagnostic item is detected when... Check item

TROUBLE DIAGNOSIS
TF-47
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TF
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer toTF-44, "CONSULT-II SETTING PROCEDURE"
.
2. Touch “DATA MONITOR”.
3. Select from “SELECT MONITOR ITEM”, screen of data monitor mode is displayed.
NOTE:
When malfunction is detected, CONSULT-II performs REAL-TIME DIAGNOSIS.
Also, any malfunction detected while in this mode will be displayed in real time.
Display Item List
´: Standard –: Not applicable
Monitored item (Unit)Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
VHCL/S SEN·FR [km/h] or [mph]´–´For ABS models, wheel speed calculated
by ABS actuator and electric unit (control
unit). Signal input with CAN communica-
tion line.
VHCL/S SEN·RR [km/h] or [mph]´–´For ABS models, wheel speed calculated
by TCM. Signal input with CAN communi-
cation line.
ENGINE SPEED [rpm]´–´Engine speed is displayed.
Signal input with CAN communication line.
BATTERY VOLT [V]´–´Power supply voltage for transfer control
unit.
2WD SWITCH [ON/OFF]´–´
4WD shift switch signal status is dis-
played.
(4L means 4LO of 4WD shift switch.) 4H SWITCH [ON/OFF]´–´
4L SWITCH [ON/OFF]´–´
4L POSI SW [ON/OFF]´–´This means 4LO switch.
4LO switch signal status is displayed.
ATP SWITCH [ON/OFF]´–´ATP switch signal status is displayed.
WAIT DETCT SW [ON/OFF]´–´Wait detection switch signal status is dis-
played.
4WD MODE [2H/4H/4L] –´´Control status of 4WD recognized by
transfer control unit. (2WD, 4H or 4LO)
VHCL/S COMP [km/h] or [mph] –´´Vehicle speed recognized by transfer con-
trol unit.
SHIFT ACT 1 [ON/OFF] –´´Output condition to actuator motor (clock-
wise)
SHIFT AC MON 1 [ON/OFF] – –´Check signal for transfer control unit sig-
nal output
SHIFT ACT 2 [ON/OFF] –´´Output condition to actuator motor (coun-
terclockwise)
SHIFT AC MON 2 [ON/OFF] – –´Check signal for transfer control unit sig-
nal output
SFT ACT/R MON [ON/OFF] – –´Operating condition of actuator motor
relay (integrated in transfer control unit)
SHIFT POS SW 1 [ON/OFF]´–´Condition of actuator position switch 1
SHIFT POS SW 2 [ON/OFF]´–´Condition of actuator position switch 2
SHIFT POS SW 3 [ON/OFF]´–´Condition of actuator position switch 3
SHIFT POS SW 4 [ON/OFF]´–´Condition of actuator position switch 4

TROUBLE DIAGNOSIS
TF-49
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Self-Diagnostic ProcedureEDS0031X
SELF-DIAGNOSTIC PROCEDURE (WITH CONSULT-II)
Refer toTF-45, "SELF-DIAG RESULT MODE".
SELF-DIAGNOSTIC PROCEDURE (WITHOUT CONSULT-II)
Description
If the engine starts when there is something wrong with the 4WD system, the 4WD warning lamp turns ON or
flickers in the combination meter. When the system functions properly, the warning lamp turns ON when the
ignition switch is turned to “ON”, and it turns OFF after engine starts. To begin trouble diagnosis, start the self-
diagnosis function. The 4WD warning lamp in the combination meter will flicker according to the self-diagnos-
tic results. As for the details of the 4WD warning lamp flickering patterns, refer toTF-49, "
Diagnostic Proce-
dure (A/T models)",TF-49, "Diagnostic Procedure (M/T models)".
Diagnostic Procedure (A/T models)
1. Warm up engine.
2. Turn ignition switch “ON” and “OFF” at least twice, and then turn ignition switch “OFF”.
3. Move A/T selector lever to “P” position.
4. Turn 4WD shift switch to “2WD” position.
5. Turn ignition switch “ON”. (Do not start engine.)
6. 4WD warning lamp ON.
If 4WD warning lamp does not turn ON, refer toTF-91, "
4WD Warning Lamp Does Not Turn ON".
7. Move A/T selector lever to “R” position.
8. Turn 4WD shift switch to “2WD”, “4H” and “2WD” in order.
9. Move A/T selector lever to “P” position.
10. Turn 4WD shift switch to “4H”, “2WD” and “4H” in order.
11. Move A/T selector lever to “N” position.
12. Turn 4WD shift switch to “2WD” position.
13. Move A/T selector lever to “P” position.
14. Read the flickering of 4WD warning lamp.
Refer toTF-50, "
Judgement Self-diagnosis".
Diagnostic Procedure (M/T models)
1. Warm up engine.
2. Turn ignition switch “ON” and “OFF” at least twice, and then turn ignition switch “OFF”.
3. Move M/T shift lever to neutral position.
4. Turn 4WD shift switch to “2WD” position.
5. Turn ignition switch “ON”. (Do not start engine.)
6. 4WD warning lamp ON.
If 4WD warning lamp does not turn ON, refer toTF-91, "
4WD Warning Lamp Does Not Turn ON".
7. Move M/T shift lever to any position other than neutral.
8. Turn 4WD shift switch to “2WD”, “4H” and “2WD” in order.
9. Move M/T shift lever to neutral position.
10. Turn 4WD shift switch to “4H”, “2WD” and “4H” in order.
11. Move M/T shift lever to any position other than neutral.
12. Turn 4WD shift switch to “2WD” position.
13. Move M/T shift lever to neutral position.
14. Read the flickering of 4WD warning lamp.
Refer toTF-50, "
Judgement Self-diagnosis".

TF-50
TROUBLE DIAGNOSIS
Judgement Self-diagnosis
When a malfunction is detected, the malfunction route is indicated by flickering of the 4WD warning lamp.
PDIA0227E
Flickering pattern Items Diagnostic item is detected when... Check item
2Output shaft revolution
signal (from TCM)
lMalfunction is detected in output shaft revolution signal
that is output from TCM through CAN communication.
lImproper signal is input while driving.TF-55, "
Output Shaft
Revolution Signal
(TCM)"
3Vehicle speed signal
[from ABS actuator and
electric unit (control
unit)]
lMalfunction is detected in vehicle speed signal that is
output from ABS actuator and electric unit (control unit)
through CAN communication.
lImproper signal is input while driving.TF-55, "
Vehicle Speed
Sensor (ABS)"
4 CAN communication Malfunction has been detected from CAN communication.TF-82, "CAN Commu-
nication Line"
5 AD converterAD converter system of transfer control unit is malfunction-
ing.TF-54, "Transfer Con-
trol Unit"
6 4LO switchImproper signal from 4LO switch is input due to open or
short circuit.TF-56, "4LO Switch"
7Engine speed signal
(from ECM)
lMalfunction is detected in engine speed signal that is out-
put from ECM through CAN communication.
lImproper signal is input while driving.TF-81, "
Engine Speed
Signal (ECM)"
8 Power supplyPower supply voltage for transfer control unit is abnormally
low while driving.TF-52, "
Power Supply
Circuit For Transfer
Control Unit"
9 4WD shift switchMore than two switch inputs are simultaneously detected
due to short circuit of 4WD shift switch.TF-59, "4WD Shift
Switch"
10 Wait detection switchImproper signal from wait detection switch is input due to
open or short circuit.TF-63, "Wait Detection
Switch"
11 Actuator motor
lMotor does not operate properly due to open or short cir-
cuit in actuator motor.
lMalfunction is detected in the actuator motor. (When
4WD shift switch is operated and actuator motor is not
operated.)
lMalfunction is detected in transfer shift high relay and
transfer shift low relay.TF-67, "
Actuator Motor"
12Actuator position
switch
lImproper signal from actuator position switch is input due
to open or short circuit.
lMalfunction is detected in the actuator position switch.TF-75, "
Actuator Posi-
tion Switch"
13 Transfer control device
lMalfunction is detected in transfer shut off relay 1 and
transfer shut off relay 2.
lMalfunction occurs in transfer control device drive circuit.TF-52, "
Power Supply
Circuit For Transfer
Control Unit",TF-78,
"Transfer Control
Device"
14 PNP switch signalWhen A/T PNP switch signal is malfunction or communica-
tion error between the vehicles.TF-66, "PNP Switch
Signal (TCM)"