differential NISSAN NAVARA 2005 Repair Workshop Manual

TROUBLE DIAGNOSIS
RFD-53
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
C
E
F
G
H
I
J
K
L
MA
B
RFD
DATA MONITOR MODE
Operation Procedure
1. Perform “CONSULT-II SETTING PROCEDURE”. Refer toRFD-50, "CONSULT-II SETTING PROCE-
DURE".
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 at real time.
Display Item List
´: Standard –: Not applicable
Monitor item (Unit)SELECT MONITOR ITEM
Remarks
ECU INPUT
SIGNALSMAIN
SIGNALSSELECTION
FROM MENU
BATTERY VOLT [V]´´´Power supply voltage for differential lock
control unit.
4WD MODE [2H/4H/4Lo]´´´4WD shift switch signal status via CAN
communication line is displayed.
VHCL S/SEN-R [km/h] or [mph]´–´Wheel speed calculated by rear wheel
sensor right signal is displayed.
VHCL S/SEN-L [km/h] or [mph]´–´Wheel speed calculated by rear wheel
sensor left signal is displayed.
VHCL S/SEN-RL [km/h] or [mph]´´´Average value between wheel speed cal-
culated by rear wheel sensor right signal
and rear wheel sensor left signal is dis-
played.
D-LOCK SW SIG [ON/OFF]´´´Condition of differential lock mode switch
is displayed.
D-LOCK SIG [ON/OFF]´´´Control status of differential lock is dis-
played.
RELAY ON [ON/OFF]´´´Operating condition of differential lock
solenoid relay is displayed (integrated in
differential lock control unit).
RELAY MTR [ON/OFF]´´´Control status of differential lock solenoid
relay is displayed (integrated in differential
lock control unit).
SOL MTR [ON/OFF]´´´Control status of differential lock solenoid
is displayed.
IND MTR [ON/OFF]´´´Control status of DIFF LOCK indicator
lamp is displayed.
D-LOCK POS SW [ON/OFF]´´´Condition of differential lock position switch
is displayed.
Voltage [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] – –´

RFD-54
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYSTEM
TROUBLE DIAGNOSIS FOR SYSTEM
PFP:00000
Power Supply Circuit For Differential Lock Control UnitEDS003B1
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
DIFFERENTIAL LOCK 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.Monitor item [Unit] Content Condition Display value
BATTERY VOLT [V]Power supply voltage for
differential lock control unitIgnition switch: ON Battery voltage
Te r m i n a lWire
colorItem Condition Data (Approx.)
1 O Power supplyIgnition switch: ON Battery voltage
Ignition switch: OFF 0V
2 O Power supplyIgnition switch: ON Battery voltage
Ignition switch: OFF 0V
3 B Ground Always 0V
10 B Ground Always 0V
15 RPower supply
(Memory back-up)Ignition switch: ON Battery voltage
Ignition switch: OFF Battery voltage

TROUBLE DIAGNOSIS FOR SYSTEM
RFD-55
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
C
E
F
G
H
I
J
K
L
MA
B
RFD
DIAGNOSTIC PROCEDURE
1.CHECK POWER SUPPLY
1. Turn ignition switch “OFF”.
2. Disconnect differential lock control unit harness connector.
3. Check voltage between differential lock control unit harness
connector terminals and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between differential lock control unit harness
connector terminals and ground.
OK or NG
OK >> GO TO 2.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.
l10A fuse [No. 3 or 19, located in fuse block (J/B)]
lHarness for short or open between battery and differential lock control unit harness connector
terminal 15
lHarness for short or open between ignition switch and differential lock control unit harness con-
nector terminals 1 and 2
lBattery and ignition switch. Refer toPG-4, "POWER SUPPLY ROUTING CIRCUIT".
2.CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect differential lock control unit harness connector.
3. Check continuity between differential lock control unit harness
connector M107 terminals 3, 10 and ground.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
Connector Terminal Voltage (Approx.)
M1071 - Ground 0V
2 - Ground 0V
15 - Ground Battery voltage
SDIA2562E
Connector Terminal Voltage (Approx.)
M1071 - Ground
Battery voltage 2 - Ground
15 - Ground
SDIA2563E
Continuity should exist.
SDIA2564E

RFD-56
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYSTEM
3.CHECK DIFFERENTIAL LOCK CONTROL UNIT
Check differential lock control unit input/output signal. Refer toRFD-48, "
Differential Lock Control Unit Input/
Output Signal Reference Values".
OK or NG
OK >> GO TO 4.
NG >> Check differential lock control unit pin terminals for damage or loose connection with harness con-
nector. If any items are damaged, repair or replace damaged parts.
4.CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Replace differential lock control unit. Refer toRFD-76, "
Removal and Installation".
Differential Lock Control UnitEDS003B2
DIAGNOSTIC PROCEDURE
1.PERFORM SELF-DIAGNOSIS
With CONSULT-II
1. Turn ignition switch “ON”. (Do not start engine.)
2. Select “SELF-DIAG RESULTS” mode for “DIFF LOCK” with CONSULT-II.
3. Touch “ERASE”.
4. Turn ignition switch “OFF” and wait at least 10 seconds.
5. Perform the self-diagnosis again.
Is the
“CONTROL UNIT 1 [P1834]”,“CONTROL UNIT 2 [P1835]”,“CONTROL UNIT 3 [P1836]”or“CONTROL
UNIT 4 [P1837]”displayed?
YES >> Replace differential lock control unit. Refer toRFD-76, "Removal and Installation".
NO >>INSPECTION END
Differential Lock Mode SwitchEDS003B3
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
DIFFERENTIAL LOCK 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.
Monitor item [Unit] Content Condition Display value
D-LOCK SW SIG [ON/
OFF]Condition of differential
lock mode switchDifferential lock mode switch: ON ON
Differential lock mode switch: OFF OFF
Te r m i n a lWire
colorItem Condition Data (Approx.)
9YDifferential lock mode switch
(ON)Ignition switch: ONDifferential lock mode switch: ON Battery voltage
Differential lock mode switch: OFF 0V
22 GDifferential lock mode switch
(OFF)Ignition switch: ONDifferential lock mode switch: ON 0V
Differential lock mode switch: OFF Battery voltage

TROUBLE DIAGNOSIS FOR SYSTEM
RFD-57
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
C
E
F
G
H
I
J
K
L
MA
B
RFD
DIAGNOSTIC PROCEDURE
1.CHECK DIFFERENTIAL LOCK MODE SWITCH SIGNAL
With CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode for “DIFF LOCK” with CONSULT-II.
3. Read out ON/OFF switching action of “D-LOCK SW SIG”.
Without CONSULT-II
1. Turn ignition switch “ON”.
2. Check voltage between differential lock control unit harness
connector terminals and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
Monitor item ConditionDisplay
value
D-LOCK SW SIG
lVehicle stopped
lEngine runningDifferential lock mode
switch: ONON
Differential lock mode
switch: OFFOFF
SDIA2540E
Connector Terminal ConditionVo l ta g e
(Approx.)
M1079-
Ground
Ignition switch: ONDifferential lock mode
switch: ONBattery
voltage
Differential lock mode
switch: OFF0V
22 -
GroundDifferential lock mode
switch: ON0V
Differential lock mode
switch: OFFBattery
voltage
SDIA2568E

RFD-58
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYSTEM
2.CHECK DIFFERENTIAL LOCK MODE SWITCH SUPPLY CIRCUIT
1. Turn ignition switch “ON”.
2. Disconnect differential lock mode switch harness connector.
3. Check voltage between differential lock mode switch harness
connector terminal 3 and ground.
4. Turn ignition switch “OFF”.
5. Check voltage between differential lock mode switch harness
connector terminal 3 and ground.
OK or NG
OK >> GO TO 3.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.
l10A fuse [No. 3, located in fuse block (J/B)]
lHarness for short or open between ignition switch and differential lock mode switch harness
connector terminal 3
lIgnition switch. Refer toPG-4, "POWER SUPPLY ROUTING CIRCUIT".
3.CHECK DIFFERENTIAL LOCK MODE SWITCH
1. Turn ignition switch “OFF”.
2. Disconnect differential lock mode switch harness connector.
3. Operate differential lock mode switch and check continuity
between differential lock mode switch terminals.
OK or NG
OK >> GO TO 4.
NG >> Replace differential lock mode switch.
Connector Terminal Voltage (Approx.)
M108 3 - Ground Battery voltage
SDIA2534E
Connector Terminal Voltage (Approx.)
M108 3 - Ground 0V
SDIA2643E
Terminal Condition Continuity
1-3Differential lock mode switch: ON No
Differential lock mode switch: OFF Yes
2-3Differential lock mode switch: ON Yes
Differential lock mode switch: OFF No
SDIA2535E

TROUBLE DIAGNOSIS FOR SYSTEM
RFD-59
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
C
E
F
G
H
I
J
K
L
MA
B
RFD
4.CHECK HARNESS BETWEEN DIFFERENTIAL LOCK CONTROL UNIT AND DIFFERENTIAL LOCK
MODE SWITCH
1. Turn ignition switch “OFF”.
2. Disconnect differential lock control unit harness connector and differential lock mode switch harness con-
nector.
3. Check continuity between the following terminals.
–Differential lock control unit harness connector M107 terminal 9
and differential lock mode switch harness connector M108 ter-
minal 2.
–Differential lock control unit harness connector M107 terminal 22
and differential lock mode switch harness connector M108 ter-
minal 1.
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 DIFFERENTIAL LOCK CONTROL UNIT
Check differential lock control unit input/output signal. Refer toRFD-48, "
Differential Lock Control Unit Input/
Output Signal Reference Values".
OK or NG
OK >> GO TO 6.
NG >> Check differential lock control unit pin terminals for damage or loose connection with harness con-
nector. If any items are damaged, repair or replace damaged parts.
6.CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Replace differential lock control unit. Refer toRFD-76, "
Removal and Installation".
COMPONENT INSPECTION
1. Turn ignition switch “OFF”.
2. Disconnect differential lock mode switch harness connector.
3. Operate differential lock mode switch and check continuity
between differential lock mode switch terminals.
4. If NG, replace differential lock mode switch.Continuity should exist.
SDIA2569E
Terminal Condition Continuity
1-3Differential lock mode switch: ON No
Differential lock mode switch: OFF Yes
2-3Differential lock mode switch: ON Yes
Differential lock mode switch: OFF No
SDIA2535E

RFD-60
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYSTEM
Differential Lock Position Switch
EDS003B4
CONSULT-II REFERENCE VALUE IN DATA MONITOR MODE
Data are reference value.
DIFFERENTIAL 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.Monitor item [Unit] Content Condition Display value
D-LOCK POS SW [ON/
OFF]Condition of differential
lock position switch
lVehicle stopped
lEngine running
l4WD shift switch: 4LODifferential lock mode
switch: ON
(DIFF LOCK indicator
lamp: ON)ON
Differential lock mode
switch: OFF
(DIFF LOCK indicator
lamp: OFF)OFF
Te r m i n a lWire
colorItem Condition Data (Approx.)
20 BRDifferential lock position
switch
lVehicle stopped
lEngine running
l4WD shift switch: 4LODifferential lock mode switch: ON
(DIFF LOCK indicator lamp: ON)0V
Differential lock mode switch: OFF
(DIFF LOCK indicator lamp: OFF)Battery voltage

TROUBLE DIAGNOSIS FOR SYSTEM
RFD-61
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
C
E
F
G
H
I
J
K
L
MA
B
RFD
DIAGNOSTIC PROCEDURE
1.CHECK DIFFERENTIAL LOCK POSITION SWITCH SIGNAL
With CONSULT-II
1. Start engine.
2. Select “DATA MONITOR” mode for “DIFF LOCK” with CONSULT-II.
3. Read out ON/OFF switching action of “D-LOCK POS SW SIG”.
Without CONSULT-II
1. Start engine.
2. Check voltage between differential lock control unit harness
connector terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> GO TO 2.
2.CHECK GROUND CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect differential lock position switch harness connector.
3. Check continuity between differential lock position switch har-
ness connector C22 terminal 2 and ground.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 3.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
Monitor item ConditionDisplay
value
D-LOCK POS
SW SIG
lVehicle stopped
lEngine running
l4WD shift
switch: 4LODifferential lock mode
switch: ON
(DIFF LOCK indicator
lamp: ON)ON
Differential lock mode
switch: OFF
(DIFF LOCK indicator
lamp: OFF)OFF
SDIA2538E
Connector Terminal ConditionVo l ta g e
(Approx.)
M10720 -
Ground
lVehicle stopped
lEngine running
l4WD shift switch:
4LODifferential lock mode
switch: ON
(DIFF LOCK indicator
lamp: ON)0V
Differential lock mode
switch: OFF
(DIFF LOCK indicator
lamp: OFF)Battery
voltage
SDIA2570E
Continuity should exist.
SDIA3428E

RFD-62
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYSTEM
3.CHECK DIFFERENTIAL LOCK POSITION SWITCH
1. Turn ignition switch “OFF”.
2. Disconnect differential lock position switch harness connector.
3. Remove differential lock position switch. Refer toRFD-45, "
Location of Electrical Parts".
4. Pull differential lock position switch and check continuity
between differential lock position switch harness connector ter-
minals.
OK or NG
OK >> GO TO 4.
NG >> Replace differential lock position switch.
4.CHECK HARNESS BETWEEN DIFFERENTIAL LOCK CONTROL UNIT AND DIFFERENTIAL LOCK
POSITION SWITCH
1. Turn ignition switch “OFF”.
2. Disconnect differential lock control unit harness connector and differential lock position switch harness
connector.
3. Check continuity between differential lock control unit harness
connector M107 terminal 20 and differential lock position switch
harness connector C22 terminal 1.
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 DIFFERENTIAL LOCK CONTROL UNIT
Check differential lock control unit input/output signal. Refer toRFD-48, "
Differential Lock Control Unit Input/
Output Signal Reference Values".
OK or NG
OK >> GO TO 6.
NG >> Check differential lock control unit pin terminals for damage or loose connection with harness con-
nector. If any items are damaged, repair or replace damaged parts.
6.CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Replace differential lock control unit. Refer toRFD-76, "
Removal and Installation".
Terminal Condition Continuity
1-2Pull differential position switch Yes
Release Differential position switch No
SDIA3429E
Continuity should exist.
SDIA3430E