2005 NISSAN NAVARA control unit

RFD-66
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYSTEM
2.CHECK DIFFERENTIAL LOCK SOLENOID CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect differential lock control unit harness connector.
3. Check resistance between differential lock control unit harness
connector terminals 11 and 12.
OK or NG
OK >> GO TO 6.
NG >> GO TO 3.
3.CHECK DIFFERENTIAL LOCK SOLENOID RESISTANCE
1. Turn ignition switch “OFF”.
2. Disconnect differential lock solenoid harness connector.
3. Check resistance between differential lock solenoid harness
connector C23 terminals 1 and 2.
OK or NG
OK >> GO TO 4.
NG >> Replace differential lock solenoid. Refer toRFD-86, "
Dif-
ferential Assembly".
4.CHECK DIFFERENTIAL LOCK SOLENOID OPERATION
1. Turn ignition switch “OFF”.
2. Disconnect differential lock solenoid harness connector.
3. Check operation of differential lock solenoid by applying battery
voltage to differential lock solenoid harness connector terminals.
CAUTION:
Be sure to apply the voltage of the correct polarity to the
respective terminals. Otherwise, the part may be damaged.
Does solenoid operate?
YES >> GO TO 5.
NO >> Replace differential lock solenoid. Refer toRFD-86, "
Dif-
ferential Assembly".
Connector Terminal Resistance (Approx.)
M107 11 - 12 3.4W
SDIA2566E
1-2 :Approx.3.4W
SDIA3431E
Connector Terminal
C23 1 (Battery voltage) - 2 (Ground)
SDIA3432E

TROUBLE DIAGNOSIS FOR SYSTEM
RFD-67
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
C
E
F
G
H
I
J
K
L
MA
B
RFD
5.CHECK HARNESS BETWEEN DIFFERENTIAL LOCK CONTROL UNIT AND DIFFERENTIAL LOCK
SOLENOID
1. Turn ignition switch “OFF”.
2. Disconnect differential lock control unit harness connector and differential lock solenoid harness connec-
tor.
3. Check continuity between the following terminals.
–Differential lock control unit harness connector M107 terminal 11
and differential lock solenoid harness connector C23 terminal 2.
–Differential lock control unit harness connector M107 terminal 12
and differential lock solenoid harness connector C23 terminal 1.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.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 7.
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.
7.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". 11 - 2 : Continuity should exist.
12 - 1 : Continuity should exist.
SDIA3433E

RFD-68
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYSTEM
COMPONENT INSPECTION
1. Turn ignition switch “OFF”.
2. Disconnect differential lock solenoid harness connector.
3. Check resistance between differential lock solenoid harness
connector C23 terminals 1 and 2.
4. If NG, replace differential lock solenoid. Refer toRFD-86, "
Differ-
ential Assembly".
5. Check operation by applying battery voltage to differential lock
solenoid harness connector terminals.
CAUTION:
Be sure to apply the voltage of the correct polarity to the
respective terminals. Otherwise, the part may be damaged.
6. If NG, replace differential lock solenoid.
ABS SystemEDS003B7
DIAGNOSTIC PROCEDURE
1.CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer toBRC-18, "
Self-Diagnosis".
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 2.
2.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 3.
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.
3.CHECK DTC
Perform the self-diagnosis, after driving the vehicle for a while.
OK or NG
OK >>INSPECTION END
NG >> Perform self-diagnosis with ABS actuator and electric unit (control unit) again. Refer toBRC-18,
"Self-Diagnosis". 1-2 :Approx.3.4W
SDIA3431E
Connector Terminal
C23 1 (Battery voltage) - 2 (Ground)
SDIA3432E

RFD-70
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYMPTOMS
TROUBLE DIAGNOSIS FOR SYMPTOMS
PFP:00007
DIFF LOCK Indicator Lamp Does Not Turn ONEDS003B9
SYMPTOM:
DIFF LOCK indicator lamp does not turn ON for approx. 1 second when turning ignition switch to
“ON”.
DIAGNOSTIC PROCEDURE
1.CHECK SYSTEM FOR CAN COMMUNICATION LINE
Perform self-diagnosis. Refer toRFD-51, "
SELF-DIAG RESULTS MODE".
Is
“CAN COMM CIRCUIT”displayed?
YES >> Perform trouble diagnosis for CAN communication line. Refer toRFD-69, "CAN Communication
Line".
NO >> GO TO 2.
2.CHECK DIFFERENTIAL LOCK CONTROL UNIT 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 3.
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".
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

TROUBLE DIAGNOSIS FOR SYMPTOMS
RFD-71
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
C
E
F
G
H
I
J
K
L
MA
B
RFD
3.CHECK DIFFERENTIAL LOCK CONTROL UNIT 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 4.
NG >> Repair open circuit or short to ground or short to power
in harness or connectors.
4.CHECK COMBINATION METER POWER SUPPLY CIRCUIT
1. Turn ignition switch “OFF”.
2. Disconnect combination meter harness connector.
3. Check voltage between combination meter harness connector
terminal and ground.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Check voltage between combination meter harness connector
terminal and ground.
OK or NG
OK >> GO TO 5.
NG >> Check the following. If any items are damaged, repair or
replace damaged parts.
l10A fuse [No.14, located in the fuse block (J/B)]
lHarness for short or open between ignition switch and combination meter harness connector
terminal 16.
lIgnition switch. Refer toPG-4, "POWER SUPPLY ROUTING CIRCUIT". Continuity should exist.
SDIA2564E
Connector Terminal Voltage (Approx.)
M23 16 - Ground 0V
WDIA0250E
Connector Terminal Voltage (Approx.)
M23 16 - Ground 0V
WDIA0251E

RFD-72
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYMPTOMS
5.CHECK HARNESS BETWEEN DIFFERENTIAL LOCK CONTROL UNIT AND COMBINATION METER
1. Turn ignition switch “OFF”.
2. Disconnect differential lock control unit harness connector and combination meter harness connector.
3. Check continuity between differential lock control unit harness
connector M107 terminal 21 and combination meter harness
connector M23 terminal 25.
Also check harness for short to ground and short to power.
OK or NG
OK >> GO TO 6.
NG >> Repair or replace damaged parts.
6.CHECK INDICATOR LAMP CIRCUIT
1. Turn ignition switch “OFF”. (Stay for at least 5 seconds.)
2. Connect combination meter harness connector.
3. Disconnect differential lock control unit harness connector.
4. Turn ignition switch “ON”. (Do not start engine.)
5. Ground the following terminals using suitable wiring.
–Differential lock control unit harness connector M107 terminal 21
and ground.
Do indicator lamps turn on?
OK >> GO TO 7.
NG >> Replace combination meter. Refer toDI-27, "
Removal
and Installation of Combination Meter".
7.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 8.
8.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 >>INSPECTION END
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. Continuity should exist.
WDIA0252E
SDIA3453E

TROUBLE DIAGNOSIS FOR SYMPTOMS
RFD-73
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
C
E
F
G
H
I
J
K
L
MA
B
RFD
DIFF LOCK Indicator Lamp Does Not ChangeEDS003BA
SYMPTOM:
DIFF LOCK indicator lamp does not change when turning differential lock mode switch to “ON” after
engine start.
DIAGNOSTIC PROCEDURE
1.CHECK DIFF LOCK INDICATOR LAMP
Confirm DIFF LOCK indicator lamp when ignition switch is turned to ON.
Does DIFF LOCK indicator lamp turn on?
YES >> GO TO 2.
NO >> Go toRFD-70, "
DIFF LOCK Indicator Lamp Does Not Turn ON".
2.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer toRFD-51, "
SELF-DIAG RESULTS MODE".
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
3.CHECK SYSTEM FOR DIFFERENTIAL LOCK MODE SWITCH
Perform trouble diagnosis for differential lock mode switch system. Refer toRFD-56, "
Differential Lock Mode
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.
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 >>INSPECTION END
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.

RFD-74
[WITH ELECTRONIC LOCKING DIFFERENTIAL]
TROUBLE DIAGNOSIS FOR SYMPTOMS
DIFF LOCK Indicator Lamp Sometimes Flashes
EDS003BB
SYMPTOM:
DIFF LOCK indicator lamp sometimes flashes when it turns ON or OFF during driving.
DIAGNOSTIC PROCEDURE
1.CHECK DIFF LOCK INDICATOR LAMP
Confirm DIFF LOCK indicator lamp when ignition switch is turned to ON.
Does DIFF LOCK indicator lamp turn on?
YES >> GO TO 2.
NO >> Go toRFD-70, "
DIFF LOCK Indicator Lamp Does Not Turn ON".
2.CHECK SELF-DIAGNOSTIC RESULTS
Perform self-diagnosis. Refer toRFD-51, "
SELF-DIAG RESULTS MODE".
Is any malfunction detected by self-diagnosis?
YES >> Check the malfunctioning system.
NO >> GO TO 3.
3.CHECK SYSTEM FOR DIFFERENTIAL LOCK MODE SWITCH
Perform trouble diagnosis for differential lock mode switch system. Refer toRFD-56, "
Differential Lock Mode
Switch".
OK or NG
OK >> GO TO 4.
NG >> Repair or replace damaged parts.
4.CHECK SYSTEM FOR DIFFERENTIAL POSITION SWITCH
Perform trouble diagnosis for differential lock position switch system. Refer toRFD-60, "
Differential Lock Posi-
tion Switch".
OK or NG
OK >> GO TO 5.
NG >> Repair or replace damaged parts.
5.CHECK SYMPTOM
Check again.
OK or NG
OK >>INSPECTION END
NG >> GO TO 6.
6.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 7.
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.