2005 NISSAN NAVARA warning

TF-48
TROUBLE DIAGNOSIS
4WD FAIL LAMP [ON/OFF] –´´Control status of 4WD warning lamp is dis-
played.
2WD IND [ON/OFF] – –´Control status of 4WD shift indicator lamp
(rear) is displayed.
4H IND [ON/OFF] – –´Control status of 4WD shift indicator lamp
(front and center) is displayed.
4L IND [ON/OFF] – –´Control status of 4LO indicator lamp is dis-
played.
Vo l ta g e [V ] – –´The value measured by the voltage probe
is displayed.
Frequency [Hz] – –´
The value measured by the pulse probe is
displayed. DUTY-HI (high) [%] – –´
DUTY-LOW (low) [%] – –´
PLS WIDTH-HI [msec] – –´
PLS WIDTH-LOW [msec] – –´ Monitored item (Unit)Monitor item selection
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU

TROUBLE DIAGNOSIS
TF-49
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TF
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)"

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

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-91
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TF
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-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.

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-97
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TF
5.CHECK ATP WARNING LAMP CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect ATP switch harness connector.
3. Turn ignition switch “ON”. (Do not start engine.)
4. Ground the following terminal using suitable wiring.
–ATP switch harness connector F55 terminal 8 and ground.
Does ATP warning lamp turn on?
OK >> GO TO 8.
NG >> GO TO 6.
6.CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and combination meter harness connector.
3. Check continuity between transfer control unit harness connec-
tor M106 terminal 39 and combination meter harness connector
M23 terminal 21.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 7.
NG >> Repair or replace damaged parts.
7.CHECK HARNESS BETWEEN COMBINATION METER AND ATP SWITCH
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Disconnect ATP switch harness connector.
3. Check continuity between combination meter harness connector
M23 terminal 1 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 8.
NG >> Repair or replace damaged parts.
8.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 9.
SDIA2832E
Continuity should exist.
SDIA2825E
Continuity should exist.
SDIA2833E

TROUBLE DIAGNOSIS FOR SYMPTOMS
TF-99
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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.