Nissan Titan A60. Manual — part 322
P1839 POSITION SWITCH ON
DLN-227
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
C
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G
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A
B
DLN
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Check voltage between differential lock position switch connector
C16 terminal 1 and ground.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between differential lock position switch har-
ness connector C16 terminal 3 and ground.
Is the inspection result normal?
YES
>> Replace the differential lock control unit. Refer to
253, "Removal and Installation"
NO
>> Repair harness or connector.
5.
CHECK HARNESS BETWEEN DIFFERENTIAL LOCK CONTROL UNIT AND DIFFERENTIAL LOCK PO-
SITION SWITCH
1. Turn ignition switch OFF.
2. Disconnect differential lock control unit harness connector B77.
3. Check continuity between differential lock control unit harness
connector B77 (A) terminal 20 and differential lock position
switch harness connector C16 (B) terminal 1.
4. Check continuity between differential lock control unit harness
connector B77 (A) terminal 20 and ground.
Is the inspection result normal?
YES >> Replace differential lock control unit. Refer to
DLN-253, "Removal and Installation"
.
NO
>> Repair harness or connector.
(+)
(-)
Voltage (Approx.)
Connector
Terminal
C16
1
Ground
Battery voltage
AWDIA0391ZZ
Connector
Terminal
—
Continuity
C16
3
Ground
Yes
AWDIA0392ZZ
Connector
Terminal
Connector
Terminal
Continuity
B77 (A)
20
C16 (B)
1
Yes
Connector
Terminal
Ground
No
B77 (A)
20
AWDIA0393ZZ
DLN-228
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
P1844 RELAY
P1844 RELAY
Description
INFOID:0000000006179594
The differential lock solenoid relay is an integral part of the differential lock control unit.
DTC Logic
INFOID:0000000006179595
Diagnosis Procedure
INFOID:0000000006179596
Regarding Wiring Diagram information, refer to
1.
CHECK DIFFERENTIAL LOCK CONTROL UNIT POWER SUPPLY
1. Turn ignition switch OFF.
2. Disconnect differential lock control unit connector.
3. Turn ignition switch ON.
4. Check voltage between differential lock control unit connector
B77 terminals 1, 2, 15 and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check fuse. Repair harness or connectors.
2.
CHECK DIFFERENTIAL LOCK CONTROL UNIT GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Check continuity between differential lock control unit connector
B77 terminals 3, 10 and ground.
Is the inspection result normal?
YES
>> Power and ground supply is normal.
NO
>> Repair harness or connectors.
DTC
Display contents of CONSULT-III
DTC Detection Condition
Action to take
P1844
RELAY
[P1844]
The differential lock control unit relay monitor did not de-
tect expected voltage at the relay.
Inspect differential lock con-
trol unit relay power and
ground supply circuit. Refer
to
(+)
(-)
Voltage (Approx.)
Connector
Terminal
B77
1
Ground
Battery voltage
2
15
SDIA2563E
Connector
Terminal
—
Continuity
B77
3
Ground
Yes
10
SDIA2564E
P1847 SOLENOID CIRCUIT
DLN-229
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
C
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B
DLN
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P1847 SOLENOID CIRCUIT
Description
INFOID:0000000006179597
Replace the differential lock control unit if this DTC is displayed. Refer to
DLN-253, "Removal and Installation"
.
DTC Logic
INFOID:0000000006179598
DTC
Display contents of CONSULT-III
DTC Detection Condition
Action to take
P1847
SOL CIRCUIT
[P1847]
A malfunction is detected in the differential lock control
unit internal circuit.
DLN-230
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
P1848 SOLENOID DISCONNECT
P1848 SOLENOID DISCONNECT
Description
INFOID:0000000006179599
When power and ground is supplied from the differential lock control unit, the differential lock solenoid will
actuate to move the pressure plate against the cam ring to lock the differential. By reversing polarity at the dif-
ferential lock control unit, the differential lock solenoid moves the pressure plate away from the cam ring to
unlock the differential.
DTC Logic
INFOID:0000000006179600
Diagnosis Procedure
INFOID:0000000006179601
Regarding Wiring Diagram information, refer to
1.
CHECK DIFFERENTIAL SOLENOID CONTROL
1. Start engine.
2. Using CONSULT-III, select “RELAY ON”, “RELAY MTR”, “SOL MTR” of DIFF LOCK data monitor.
3. Observe the display values while operating the differential lock system.
Is the inspection result normal?
YES
>> Differential lock solenoid control system is operating normally.
NO
>> GO TO 2.
2.
CHECK DIFFERENTIAL LOCK SOLENOID RESISTANCE
1. Turn ignition switch OFF.
2. Disconnect differential lock solenoid connector.
3. Check resistance between differential lock solenoid terminals 2
and 4.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace differential lock solenoid.
3.
CHECK DIFFERENTIAL LOCK SOLENOID OPERATION
DTC
Display contents of CONSULT-III
DTC Detection Condition
Action to take
P1848
SOL DISCONNECT
[P1848]
An open was detected in the differential lock solenoid or
circuit.
Inspect differential lock sole-
noid. Refer to
Monitor item
Condition
Differential lock mode switch
Display value
RELAY ON
• Vehicle stopped
• Engine running
• VDC OFF switch (if
equipped): ON
• 4WD shift switch: 4LO
ON
ON
OFF
OFF
RELAY MTR
ON
ON
OFF
OFF
SOL MTR
ON
ON
OFF
OFF
2 - 4
: Approx. 3.4
Ω
AWDIA0394ZZ
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