Nissan Titan. Manual — part 162
DLN-220
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
P1836 CONTROL UNIT 3
P1836 CONTROL UNIT 3
Description
INFOID:0000000009886115
Replace the differential lock control unit if this DTC is displayed. Refer to
DLN-251, "Removal and Installation"
.
DTC Logic
INFOID:0000000009886116
DTC
Display contents of CONSULT
DTC Detection Condition
Action to take
P1836
CONTROL UNIT 3
[P1836]
A malfunction is detected in the memory (EEPROM) of
the differential lock control unit.
P1837 CONTROL UNIT 4
DLN-221
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
P1837 CONTROL UNIT 4
Description
INFOID:0000000009886117
Replace the differential lock control unit if this DTC is displayed. Refer to
DLN-251, "Removal and Installation"
.
DTC Logic
INFOID:0000000009886118
DTC
Display contents of CONSULT
DTC Detection Condition
Action to take
P1837
CONTROL UNIT 4
[P1837]
The AD converter system of the differential lock control
unit is malfunctioning.
DLN-222
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
P1838 ON SWITCH
P1838 ON SWITCH
Description
INFOID:0000000009886119
The differential lock mode switch sends differential lock ON/OFF signals to the differential lock control unit.
DTC Logic
INFOID:0000000009886120
Diagnosis Procedure
INFOID:0000000009886121
Regarding Wiring Diagram information, refer to
1.
CHECK DIFFERENTIAL LOCK MODE SWITCH OPERATION
1. Turn ignition switch ON.
2. Using CONSULT, select “D-LOCK SW SIG” of DIFF LOCK data monitor items.
3. While operating the differential lock mode switch, check that the display value changes between ON/OFF.
Is the inspection result normal?
YES
>> Differential lock mode switch is operating properly.
NO
>> GO TO 2.
2.
CHECK DIFFERENTIAL LOCK MODE SWITCH POWER SUPPLY CIRCUIT
1. Disconnect differential lock mode switch connector.
2. Turn ignition switch ON.
3. Check voltage between differential lock mode switch connector
M72 terminal 3 and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK DIFFERENTIAL LOCK MODE SWITCH SIGNAL
DTC
Display contents of CONSULT
DTC Detection Condition
Action to take
P1838
ON SW
[P1838]
Two switch inputs were simultaneously detected due to a
short circuit in the differential lock mode switch.
Inspect the differential lock
mode switch. Refer to
Switch ON
Display item ON
Switch OFF
Display item OFF
(+)
(-)
Voltage (Approx.)
Connector
Terminal
M72
3
Ground
Battery voltage
SDIA2534E
P1838 ON SWITCH
DLN-223
< DTC/CIRCUIT DIAGNOSIS >
[REAR FINAL DRIVE: M226 (ELD) ]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
1. Turn ignition switch OFF.
2. Connect differential lock mode switch connector.
3. Check voltage between differential lock control unit connector
B77 terminals 9, 22 and ground.
Is the inspection result normal?
YES
>> Replace the differential lock control unit. Refer to
DLN-251, "Removal and Installation"
.
NO
>> GO TO 4.
4.
CHECK DIFFERENTIAL LOCK MODE SWITCH
1. Turn ignition switch OFF.
2. Disconnect differential lock mode switch connector.
3. Operate differential lock mode switch and check continuity
between differential lock mode switch terminals.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace differential lock mode switch.
5.
CHECK HARNESS BETWEEN DIFFERENTIAL LOCK CONTROL UNIT AND DIFFERENTIAL LOCK
MODE SWITCH
1. Check continuity between differential lock control unit connector
B77 (A) terminals 9, 22 and differential lock mode switch con-
nector M72 (B) terminals 2, 1.
2. Check continuity between differential lock control unit connector
B77 (A) terminals 9, 22 and ground.
Is the inspection result normal?
YES >> Replace the differential lock control unit. Refer to
DLN-251, "Removal and Installation"
.
NO
>> Repair harness or connector.
(+)
(-)
Differential lock mode
switch
Voltage (Approx.)
Connector
Terminal
B77
9
Ground
ON
Battery voltage
OFF
0V
22
ON
0V
OFF
Battery voltage
SDIA2568E
Terminals
Differential lock mode switch
Continuity
1 - 3
ON
No
OFF
Yes
2 - 3
ON
Yes
OFF
No
SDIA2535E
Connector
Terminal
Connector
Terminal
Continuity
B77 (A)
9
M72 (B)
2
Yes
22
1
Connector
Terminal
Ground
Continuity
B77 (A)
9
No
22
ALDIA0165ZZ
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