Nissan Frontier. Manual — part 346
DLN-286
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
P1847 SOLENOID CIRCUIT
P1847 SOLENOID CIRCUIT
Description
INFOID:0000000009479842
Replace the differential lock control unit if this DTC is displayed. Refer to
DLN-311, "Removal and Installation"
.
DTC Logic
INFOID:0000000009479843
DTC
Display contents of CONSULT
DTC Detection Condition
Action to take
P1847
SOL CIRCUIT
[P1847]
A malfunction is detected in the differential lock control
unit internal circuit.
Replace differential lock
control unit. Refer to
311, "Removal and Installa-
tion"
.
P1848 SOLENOID DISCONNECT
DLN-287
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
P1848 SOLENOID DISCONNECT
Description
INFOID:0000000009479844
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:0000000009479845
Diagnosis Procedure
INFOID:0000000009479846
Regarding Wiring Diagram information, refer to
1.
CHECK DIFFERENTIAL SOLENOID CONTROL
1. Start engine.
2. Using CONSULT, 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 harness connector C117.
3. Check resistance between differential lock solenoid terminals 2 and 4.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace differential solenoid.
3.
CHECK DIFFERENTIAL LOCK SOLENOID OPERATION
Check operation by applying power and ground to the differential lock solenoid terminals.
DTC
Display contents of CONSULT
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: 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
DLN-288
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
P1848 SOLENOID DISCONNECT
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Check for a mechanical malfunction with the differential lock system. Replace differential sole-
noid.
4.
CHECK DIFFERENTIAL LOCK SOLENOID CIRCUIT
1. Disconnect differential lock control unit harness connector.
2. Check continuity between differential lock control unit harness
connector M70 (A) terminals 11, 12 and differential lock solenoid
harness connector C117 (B) terminals 4, 2.
3. Check continuity between differential lock control unit harness
connector M70 (A) terminals 11, 12 and ground.
Is the inspection result normal?
YES
>> Replace the differential lock control unit. Refer to
DLN-311, "Removal and Installation"
.
NG
>> Repair harness or connector.
Component
(+)
(-)
Solenoid operation
Terminal
Terminal
Differential lock
solenoid
4
2
Yes
A
B
Continuity
Connector
Terminal
Connector
Terminal
M70
11
C117
4
Yes
12
2
A
—
Continuity
Connector
Terminal
M70
11
Ground
No
12
AWDIA0311ZZ
P1849 SOLENOID SHORT
DLN-289
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
P1849 SOLENOID SHORT
Description
INFOID:0000000009479847
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:0000000009479848
Diagnosis Procedure
INFOID:0000000009479849
Regarding Wiring Diagram information, refer to
1.
CHECK DIFFERENTIAL SOLENOID CONTROL
1. Start engine.
2. Using CONSULT, 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 harness connector C117.
3. Check resistance between differential lock solenoid terminals 2 and 4.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Replace differential solenoid.
3.
CHECK DIFFERENTIAL LOCK SOLENOID OPERATION
Check operation by applying power and ground to the differential lock solenoid terminals.
DTC
Display contents of CONSULT
DTC Detection Condition
Action to take
P1849
SOL SHORT
[P1849]
A short was detected in the differential lock solenoid inter-
nal circuit or in the harness.
Inspect the differential lock
solenoid. Refer to
.
Monitor item
Condition
Differential lock mode switch
Display value
RELAY ON
• Vehicle stopped
• Engine running
• VDC OFF switch: 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
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