Nissan Pathfinder (2011 year). Instruction — part 193
DLN-82
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
P1828 LINE PRESSURE SWITCH
Are inspection results normal?
YES
>> GO TO 6.
NO
>> Replace transfer control unit.
6.
CRUISE TEST
Perform cruise test. Refer to
.
Are inspection results normal?
YES
>> Inspection End.
NO
>> Perform the applicable trouble diagnosis.
Component Inspection
INFOID:0000000006244993
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.
4. If the inspection results are abnormal, replace the line pressure switch.
Terminal
Condition
Continuity
1 - Ground
Push line pressure switch
Yes
Release line pressure switch
No
2011 Pathfinder
P1829 THROTTLE POSITION SIGNAL (ECM)
DLN-83
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
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P1829 THROTTLE POSITION SIGNAL (ECM)
Description
INFOID:0000000006244994
Malfunction is detected in accelerator pedal position signal that is output from ECM through CAN communica-
tion. Also, the signal voltage from accelerator pedal position sensor may be abnormally high or low.
DTC Logic
INFOID:0000000006244995
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1829 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000006244996
1.
CHECK DTC WITH ECM
Perform self-diagnosis with ECM. Refer to
EC-530, "CONSULT-III Function"
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are inspection results normal?
YES
>> GO TO 3.
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.
3.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Are inspection results normal?
YES
>> Inspection End.
NO
>> Perform self-diagnosis with ECM again.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1829]
THROTTLE POSI SEN
• Malfunction is detected in accelerator
pedal position signal that is output
from ECM through CAN communica-
tion.
• Signal voltage from accelerator pedal
position sensor is abnormally high or
low.
2011 Pathfinder
DLN-84
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
P1830 ABS OPERATION SIGNAL (ABS)
P1830 ABS OPERATION SIGNAL (ABS)
Description
INFOID:0000000006244997
Malfunction is detected in ABS operation signal that is output from ABS actuator and electric unit (control unit)
through CAN communication.
DTC Logic
INFOID:0000000006244998
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1830 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000006244999
1.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to
.
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 3.
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.
3.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Are the inspection results normal?
YES
>> Inspection End.
NO
>> Perform self-diagnosis with ABS actuator and electric unit (control unit) again.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1830]
ABS OP SIG
Malfunction is detected in ABS operation
signal that is output from ABS actuator
and electric unit (control unit) through
CAN communication.
Refer to
.
2011 Pathfinder
P1831 VDC OPERATION SIGNAL (ABS)
DLN-85
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
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P1831 VDC OPERATION SIGNAL (ABS)
Description
INFOID:0000000006245000
Malfunction is detected in the VDC operation signal that is output from ABS actuator and electric unit (control
unit) through CAN communication.
DTC Logic
INFOID:0000000006245001
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1831 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000006245002
1.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to
.
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 3.
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.
3.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Are the inspection results normal?
YES
>> Inspection End.
NO
>> Perform self-diagnosis with ABS actuator electric unit (control unit) again.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1831]
VDC OP SIG
Malfunction is detected in VDC opera-
tion signal that is output from ABS actu-
ator and electric unit (control unit)
through CAN communication.
2011 Pathfinder
DLN-86
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
P1832 TCS OPERATION SIGNAL (ABS)
P1832 TCS OPERATION SIGNAL (ABS)
Description
INFOID:0000000006245003
Malfunction is detected in TCS operation signal that is output from ABS actuator and electric unit (control unit)
through CAN communication.
DTC Logic
INFOID:0000000006245004
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC CONFIRMATION PROCEDURE
1. Turn ignition switch ON.
2. Perform self-diagnosis.
Is DTC P1832 displayed?
YES
>> Perform diagnosis procedure. Refer to
.
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000006245005
1.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT
Perform self-diagnosis with ABS actuator and electric unit (control unit). Refer to
.
Is any malfunction detected by self-diagnosis?
YES
>> Check the malfunctioning system.
NO
>> GO TO 2.
2.
CHECK TRANSFER CONTROL UNIT
Check transfer control unit input/output signal. Refer to
Are the inspection results normal?
YES
>> GO TO 3.
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.
3.
CHECK DTC
Perform the self-diagnosis, after driving a vehicle for a while.
Are the inspection results normal?
YES
>> Inspection End.
NO
>> Perform self-diagnosis with ABS actuator electric unit (control unit) again.
DTC
CONSULT-III
Diagnostic item is detected when...
Reference
[P1832]
TCS OP SIG
Malfunction is detected in TCS operation
signal that is output from ABS actuator
and electric unit (control unit) through
CAN communication.
Refer to
.
2011 Pathfinder
U1010 CONTROL UNIT (CAN)
DLN-87
< DTC/CIRCUIT DIAGNOSIS >
[TRANSFER: ATX14B]
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U1010 CONTROL UNIT (CAN)
Description
INFOID:0000000006689826
CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-
tiplex communication line with high data communication speed and excellent error detection ability. Many elec-
tronic control units are equipped onto a vehicle, and each control unit shares information and links with other
control units during operation (not independent). In CAN communication, control units are connected with 2
communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring.
Each control unit communicate data but selectively reads required data only.
DTC Logic
INFOID:0000000006689827
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.
DTC REPRODUCTION PROCEDURE
With CONSULT-III
1. Turn the ignition switch ON.
2. Perform transfer control unit self-diagnosis. Refer to
DLN-23, "CONSULT-III Function (ALL MODE AWD/
Is DTC U1010 detected?
YES
>> Proceed to diagnosis procedure. Refer to
NO
>> Inspection End.
Diagnosis Procedure
INFOID:0000000006689828
1.
CHECK TRANSFER CONTROL UNIT CONNECTOR
Check transfer control unit connectors for disconnection and deformation.
Is the inspection result normal?
YES
>> Replace transfer control unit. Refer to
DLN-140, "Removal and Installation"
NO
>> Repair or replace parts as necessary.
DTC
Display item
Malfunction detected condition
Possible cause
U1010
CONTROL UNIT (CAN)
Detecting error during the initial diagno-
sis of CAN controller of transfer control
unit.
Malfunction of transfer control unit
2011 Pathfinder
DLN-88
< ECU DIAGNOSIS INFORMATION >
[TRANSFER: ATX14B]
TRANSFER CONTROL UNIT
ECU DIAGNOSIS INFORMATION
TRANSFER CONTROL UNIT
Reference Value
INFOID:0000000006245006
VALUE ON THE DIAGNOSIS TOOL
CONSULT-III data monitor item
Monitored item [Unit]
Content
Condition
Display value
VHCL/S SEN·FR [km/h]
or [mph]
Wheel speed (Front
wheel)
Vehicle stopped
0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condition.
Approximately
equal to the indica-
tion on speedome-
ter (Inside of
±
10%)
VHCL/S SEN·RR [km/h]
or [mph]
Wheel speed (Rear
wheel)
Vehicle stopped
0 km/h (0 mph)
Vehicle running
CAUTION:
Check air pressure of tire under standard condition.
Approximately
equal to the indica-
tion on speedome-
ter (Inside of
±
10%)
ENGINE SPEED [rpm]
Engine speed
Engine stopped
(Engine speed: Less than 400 rpm)
0 rpm
Engine running
(Engine speed: 400 rpm or more)
Approximately
equal to the indica-
tion on tachometer
THRTL POS SEN [0.0/8]
Accelerator pedal posi-
tion (APP) sensor condi-
tion of throttle opening
When depressing accelerator pedal
(Value rises gradually in response to throttle position.)
0.0/8 - 8.0/8
FLUID TEMP SE [V]
Transfer fluid tempera-
ture signal voltage
Transfer fluid temperature approx. 20 - 80
°
C (68 - 176
°
F) Approx. 1.1 - 0.3V
BATTERY VOLT [V]
Power supply voltage for
transfer control unit
Ignition switch: ON
Battery voltage
2WD SWITCH [On/Off]
Input condition from 4WD
shift switch
4WD shift switch: 2WD
On
4WD shift switch: AUTO, 4H or 4LO
Off
AUTO SWITCH [On/Off]
Input condition from 4WD
shift switch
4WD shift switch: AUTO
On
4WD shift switch: 2WD, 4H or 4LO
Off
LOCK SWITCH [On/Off]
Input condition from 4WD
shift switch
4WD shift switch: 4H
On
4WD shift switch: 2WD, AUTO or 4LO
Off
4L SWITCH [On/Off]
Input condition from 4WD
shift switch
4WD shift switch: 4LO
On
4WD shift switch: 2WD, AUTO or 4H
Off
N POSI SW TF [On/Off]
Condition of neutral-4LO
switch
• Vehicle stopped
• Engine running
• A/T selector lever N posi-
tion
• Brake pedal depressed
4WD shift switch: 2WD,
AUTO or 4H
Off
4WD shift switch: 4H to
4LO (While actuator mo-
tor is operating.)
Off
→
On
4WD shift switch: 4LO to
4H (While actuator motor
is operating.)
On
→
Off
4WD shift switch: 4LO
On
2011 Pathfinder
TRANSFER CONTROL UNIT
DLN-89
< ECU DIAGNOSIS INFORMATION >
[TRANSFER: ATX14B]
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ATP SWITCH [On/Off]
Condition of ATP switch
• Vehicle stopped
• Engine running
• A/T selector lever N posi-
tion
• Brake pedal depressed
4WD shift switch
: 4H to 4LO or 4LO to 4H
(While actuator motor is
operating.)
On
Except the above
Off
WAIT DETCT SW [On/
Off]
Condition of wait detec-
tion switch
• Vehicle stopped
• Engine running
• A/T selector lever N posi-
tion
• Brake pedal depressed
4WD shift switch: 2WD,
AUTO or 4H
Off
4WD shift switch: 4H to
4LO (While actuator mo-
tor is operating.)
Off
→
On
4WD shift switch: 4LO to
4H (While actuator motor
is operating.)
On
→
Off
4WD shift switch: 4LO
On
LINE PRES SW [On/Off]
Condition of line pres-
sure switch
• 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
CL PRES SW [On/Off]
Condition of clutch pres-
sure switch
• Vehicle stopped
• Engine running
• A/T selector lever D position
• 4WD shift switch: AUTO or 4H (Wait function is not op-
erating.)
On
• Vehicle stopped
• Engine running
• 4WD shift switch: 2WD (Wait function is not operating.)
Off
N POSI SW AT [On/Off]
Input condition from
transmission range
switch
• Vehicle stopped
• Engine running
• Brake pedal depressed
A/T selector lever posi-
tion: N
On
Except the above
Off
R POSI SW AT [On/Off]
Input condition from
transmission range
switch
• Vehicle stopped
• Engine running
• Brake pedal depressed
A/T selector lever posi-
tion: R
On
Except the above
Off
P POSI SW AT [On/Off]
Input condition from
transmission range
switch
• Vehicle stopped
• Engine running
• Brake pedal depressed
A/T selector lever posi-
tion: P
On
Except the above
Off
ABS OPER SW [On/Off]
Condition of ABS operat-
ing
ABS is operating.
On
ABS is not operating.
Off
VDC OPER SW [On/Off]
Condition of VDC operat-
ing
VDC is operating.
On
VDC is not operating.
Off
TCS OPER SW [On/Off]
Condition of TCS operat-
ing
TCS is operating.
On
TCS is not operating.
Off
THROTTLE POSI [0.0/8]
Condition of throttle
opening
When depressing accelerator pedal
(Value rises gradually in response to throttle position.)
0.0/8 - 8.0/8
4WD MODE [AUTO/
LOCK/2WD/4L]
Control status of 4WD
(Output condition of 4WD
shift indicator lamp and
4LO indicator lamp)
• Vehicle stopped
• Engine running
• A/T selector lever N posi-
tion
• Brake pedal depressed
4WD shift switch: 2WD
2WD
4WD shift switch: AUTO
AUTO
4WD shift switch: 4H
LOCK
4WD shift switch: 4LO
4L
Monitored item [Unit]
Content
Condition
Display value
2011 Pathfinder
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