Nissan Pathfinder (2011 year). Manual — part 192
DLN-74
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
P1826 TRANSFER FLUID TEMPERATURE
P1826 TRANSFER FLUID TEMPERATURE
Description
INFOID:0000000006244982
Signal voltage from the transfer fluid temperature sensor is abnormally high (Transfer fluid temperature is
abnormally low) while driving.
DTC Logic
INFOID:0000000006244983
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1826 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000006244984
Regarding Wiring Diagram information, refer to
1.
CHECK TRANSFER FLUID TEMPERATURE SENSOR SIGNAL
With CONSULT-III
1. Start engine.
2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT-III.
3. Read out the value of FLUID TEMP SE.
Without CONSULT-III
1. Start engine.
2. Check voltage between transfer control unit harness connector
terminals and ground.
Are inspection results normal?
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1826]
OIL TEMP SEN
Signal voltage from transfer fluid temper-
ature sensor is abnormally high (Trans-
fer fluid temperature is abnormally low)
while driving.
Refer to
.
Condition
Display value
(Approx.)
Transfer fluid temperature approx. 20 - 80
°
C (68 - 176
°
F)
1.1 - 0.3V
Connector
Terminal
Condition
Data
(Approx.)
M153
28 -
Ground
Always
0V
31 -
Ground
Ignition switch:
ON
Transfer fluid temperature
approx. 20
°
C (68
°
F)
1.1V
Transfer fluid temperature
approx. 80
°
C (176
°
F)
0.3V
SDIA2742E
2011 Pathfinder
P1826 TRANSFER FLUID TEMPERATURE
DLN-75
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
YES
>> GO TO 4.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND TRANSFER TERMINAL CORD AS-
SEMBLY
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and transfer terminal cord assembly harness connec-
tor.
3. Check continuity between the following terminals.
-
Transfer control unit harness connector M153 terminal 28 and
transfer terminal cord assembly harness connector F56 terminal
3 .
-
Transfer control unit harness connector M153 terminal 31 and
transfer terminal cord assembly harness connector F56 terminal
2.
Also check harness for short to ground and short to power.
Are inspection results normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK TRANSFER FLUID TEMPERATURE SENSOR
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer terminal cord assembly harness connector.
3. Check resistance between transfer terminal cord assembly ter-
minals 2 and 3.
Are inspection results normal?
YES
>> GO TO 4.
NO
>> Replace transfer fluid temperature sensor. Refer to
DLN-19, "Component Parts Location"
4.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are inspection results normal?
YES
>> GO TO 5.
NO
>> Check transfer control unit pin terminals for damage or loose connection with harness connector.
If any items are damaged, repair or replace damaged parts.
5.
CHECK DTC
Drive the vehicle and then perform self-diagnosis.
Are inspection results normal?
YES
>> Inspection End.
NO
>> Replace transfer control unit. Refer to
DLN-140, "Removal and Installation"
Component Inspection
INFOID:0000000006244985
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer terminal cord assembly harness connector.
Continuity should exist.
SDIA2743E
Temperature
°
C (
°
F)
Resistance (Approx.)
20 (68)
2.5 k
Ω
80 (176)
0.3 k
Ω
WDIA0188E
2011 Pathfinder
DLN-76
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
P1826 TRANSFER FLUID TEMPERATURE
3. Check resistance between transfer terminal cord assembly ter-
minals 2 and 3.
4. If the inspection results are abnormal replace the transfer fluid
temperature sensor. Refer to
DLN-19, "Component Parts Loca-
Temperature
°
C (
°
F)
Resistance (Approx.)
20 (68)
2.5 k
Ω
80 (176)
0.3 k
Ω
WDIA0188E
2011 Pathfinder
P1827 CLUTCH PRESSURE SWITCH
DLN-77
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
P1827 CLUTCH PRESSURE SWITCH
Description
INFOID:0000000006244986
Improper signal from the clutch pressure switch is input due to open or short circuit. Also, a malfunction may
have occurred in clutch pressure switch or hydraulic circuit.
DTC Logic
INFOID:0000000006244987
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1827 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000006244988
Regarding Wiring Diagram information, refer to
1.
CHECK CLUTCH PRESSURE SWITCH SIGNAL
With CONSULT-III
1. Start engine.
2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT-III.
3. Read out ON/OFF switching action of the CL PRES SW while operating 4WD shift switch.
Without CONSULT-III
1. Start engine.
2. Check voltage between transfer control unit harness connector
terminals and ground.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1827]
CLUTCH PRES SW
• Improper signal from clutch pressure
switch is input due to open or short cir-
cuit.
• Malfunction occurs in clutch pressure
switch or hydraulic circuit.
Condition
Display value
• Ignition switch: ON
• A/T selector lever D position
4WD shift switch: AUTO or 4H (Wait
function is not operating.)
ON
Ignition switch: ON
4WD shift switch: 2WD (Wait function
is not operating.)
OFF
SDIA2746E
2011 Pathfinder
DLN-78
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
P1827 CLUTCH PRESSURE SWITCH
Are inspection results normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND CLUTCH PRESSURE SWITCH
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer terminal cord assembly harness con-
nector.
3. Check continuity between transfer control unit harness connec-
tor M153 terminal 34 and transfer terminal cord assembly har-
ness connector F56 terminal 7
Also check harness for short to ground and short to power.
Are inspection results normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are inspection results normal?
YES
>> GO TO 4.
NO
>> Check transfer control unit pin terminals for damage or loose connection with the harness connec-
tor. If any items are damaged, repair or replace damaged parts.
4.
CHECK CLUTCH PRESSURE SWITCH
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove clutch pressure switch. Refer to
DLN-19, "Component Parts Location"
3. Push and release clutch pressure switch and check continuity between terminal 7 and ground.
Are inspection results normal?
YES
>> GO TO 5.
NO
>> Replace clutch pressure switch.
5.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Are inspection results normal?
YES
>> GO TO 6.
NO
>> Replace transfer control unit. Refer to
DLN-140, "Removal and Installation"
.
6.
CRUISE TEST
Connector
Terminal
Condition
Voltage
(Approx.)
M153
34 -
Ground
• Ignition switch: ON
• A/T selector lever D
position
4WD shift switch:
AUTO or 4H (Wait
function is not op-
erating.)
0V
Ignition switch: ON
4WD shift switch:
2WD (Wait function
is not operating.)
Battery
voltage
Continuity should exist.
SDIA2747E
Terminal
Condition
Continuity
7 -
Ground
Push clutch pressure switch
Yes
Release clutch pressure switch
No
2011 Pathfinder
P1827 CLUTCH PRESSURE SWITCH
DLN-79
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
Perform cruise test. Refer to
.
Are inspection results normal?
YES
>> Inspection End.
NO
>> Perform the applicable trouble diagnosis.
Component Inspection
INFOID:0000000006244989
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove clutch pressure switch. Refer to
DLN-19, "Component Parts Location"
3. Push and release clutch pressure switch and check continuity between terminal 7 and ground.
4. If the inspection results are abnormal replace the clutch pressure switch.
Terminal
Condition
Continuity
7 - Ground
Push clutch pressure switch
Yes
Release clutch pressure switch
No
2011 Pathfinder
DLN-80
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
P1828 LINE PRESSURE SWITCH
P1828 LINE PRESSURE SWITCH
Description
INFOID:0000000006244990
Improper signal from line pressure switch is input due to open or short circuit. Also, a malfunction may have
occurred in the line pressure switch or hydraulic circuit.
DTC Logic
INFOID:0000000006244991
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1828 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000006244992
Regarding Wiring Diagram information, refer to
1.
CHECK LINE PRESSURE SWITCH SIGNAL
With CONSULT-III
1. Start engine.
2. Select DATA MONITOR mode for ALL MODE AWD/4WD with CONSULT-III.
3. Read out ON/OFF switching action of LINE PRES SW while operating 4WD shift switch.
Without CONSULT-III
1. Start engine.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1828]
LINE PRES SW
• Improper signal from line pressure
switch is input due to open or short cir-
cuit.
• Malfunction occurs in line pressure
switch or hydraulic circuit.
Refer to
.
Condition
Display value
• A/T selector lever D position
• 4WD shift switch: AUTO
ON
• Except the above
• The vehicle has been left
at room temperature for 5
minutes and more with ig-
nition switch in OFF posi-
tion.
• Ignition switch: ON
• A/T selector lever: P or N position
• 4WD shift switch: other than
AUTO
OFF
2011 Pathfinder
P1828 LINE PRESSURE SWITCH
DLN-81
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
C
E
F
G
H
I
J
K
L
M
A
B
DLN
N
O
P
2. Check voltage between transfer control unit harness connector
terminals and ground.
Are inspection results normal?
YES
>> GO TO 5.
NO
>> GO TO 2.
2.
CHECK HARNESS BETWEEN TRANSFER CONTROL UNIT AND LINE PRESSURE SWITCH
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Disconnect transfer control unit harness connector and the transfer terminal cord assembly harness con-
nector.
3. Check continuity between transfer control unit harness connec-
tor M153 terminal 35 and transfer terminal cord assembly har-
ness connector F56 terminal 1.
Also check harness for short to ground and short to power.
Are inspection results normal?
YES
>> GO TO 3.
NO
>> Repair or replace damaged parts.
3.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are inspection results normal?
YES
>> GO TO 4.
NO
>> Check the following. If any items are damaged, repair or replace damaged parts.
• Transfer control unit pin terminals for damage or loose connection with harness connector.
• Transfer control unit. Refer to
DLN-140, "Removal and Installation"
.
4.
CHECK LINE PRESSURE SWITCH
1. Turn ignition switch OFF. (Stay for at least 5 seconds.)
2. Remove line pressure switch. Refer to
DLN-19, "Component Parts Location"
.
3. Push and release line pressure switch and check continuity between terminal 1 and ground.
Are inspection results normal?
YES
>> GO TO 5.
NO
>> Replace line pressure switch.
5.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Connector
Terminal
Condition
Voltage
(Approx.)
M153
35 -
Ground
• A/T selector lever D
position
4WD shift switch:
AUTO
0V
• Except the above
• The vehicle has
been left at room
temperature for 5
minutes and more
with ignition switch
in OFF position.
• Ignition switch:
ON
• A/T selector le-
ver: P or N posi-
tion
• 4WD shift
switch: other
than AUTO
Battery
voltage
SDIA2751E
Continuity should exist.
SDIA2752E
Terminal
Condition
Continuity
1 -
Ground
Push line pressure switch
Yes
Release line pressure switch
No
2011 Pathfinder
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