Nissan Pathfinder (2012 year). Manual — part 342
P0461 FUEL LEVEL SENSOR
EC-817
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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13. Confirm whether the voltage changes more than 0.03V during step 7 to 10 and 10 to 12.
If NG, go to
WITH GST
NOTE:
Start from step 8, if it is possible to confirm that the fuel cannot be drained by 30 (7-7/8 US gal, 6-5/8
Imp gal) in advance.
1. Prepare a fuel container and a spare hose.
2. Release fuel pressure from fuel line. Refer to
.
3. Remove the fuel feed hose on the fuel level sensor unit. Refer to
4. Connect a spare fuel hose where the fuel feed hose was removed.
5. Turn ignition switch ON.
6. Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel tank using proper equipment.
7. Confirm that the fuel gauge indication varies.
8. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
9. Confirm that the fuel gauge indication varies.
10. If NG, go to
Diagnosis Procedure
INFOID:0000000007358685
1.
CHECK DTC WITH COMBINATION METER
.
OK or NG
OK
>> GO TO 2.
NG
>> Go to
MWI-34, "Component Function Check"
.
2.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
.
>>
INSPECTION END
August 2012
2012 Pathfinder
EC-818
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0462, P0463 FUEL LEVEL SENSOR
P0462, P0463 FUEL LEVEL SENSOR
Component Description
INFOID:0000000007358686
The fuel level sensor is mounted in the fuel level sensor unit. The
sensor detects a fuel level in the fuel tank and transmits a signal to
the combination meter. The combination meter sends the fuel level
sensor signal to the ECM via the CAN communication line.
It consists of two parts, one is mechanical float and the other is vari-
able resistor. Fuel level sensor output voltage changes depending on
the movement of the fuel mechanical float.
On Board Diagnosis Logic
INFOID:0000000007358687
NOTE:
•
If DTC P0462 or P0463 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC
UXXXX.
•
If DTC P0462 or P0463 is displayed with DTC P0607, first perform the trouble diagnosis for DTC
P0607. Refer to
EC-835, "DTC Confirmation Procedure"
.
DTC Confirmation Procedure
INFOID:0000000007358688
NOTE:
If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next step.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11 V at ignition
switch ON.
1. Turn ignition switch ON.
2. Wait at least 5 seconds.
3. Check 1st trip DTC.
4. If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000007358689
1.
CHECK COMBINATION METER FUNCTION
.
OK or NG
OK
>> GO TO 2.
NG
>> Go to
MWI-34, "Component Function Check"
.
2.
CHECK INTERMITTENT INCIDENT
GI-37, "Intermittent Incident"
BBIA0529E
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0462
0462
Fuel level sensor circuit
low input
An excessively low voltage from the sensor is
sent to ECM.
• Harness or connectors
(The CAN communication line is open or
shorted)
• Harness or connectors
(The sensor circuit is open or shorted)
• Combination meter
• Fuel level sensor
P0463
0463
Fuel level sensor circuit
high input
An excessively high voltage from the sensor is
sent to ECM.
August 2012
2012 Pathfinder
P0462, P0463 FUEL LEVEL SENSOR
EC-819
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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>>
INSPECTION END
August 2012
2012 Pathfinder
EC-820
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0500 VSS
P0500 VSS
Description
INFOID:0000000007358690
ECM receives vehicle speed signals from two different paths via CAN communication line: One is from the
ABS actuator and electric unit (control unit) via the combination unit and the other is from TCM.
DTC Logic
INFOID:0000000007358691
DTC DETECTION LOGIC
NOTE:
• If DTC P0500 is displayed with DTC UXXXX, first perform the trouble diagnosis for DTC UXXXX.
• If DTC P0500 is displayed with DTC P0607, first perform the trouble diagnosis for DTC P0607. Refer to
.
DTC CONFIRMATION PROCEDURE
1.
PRECONDITIONING
If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-
dure before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is 10 V or more at idle.
>> GO TO 2.
2.
PERFORM DTC CONFIRMATION PROCEDURE
1. Start engine.
2. Shift the selector lever to D range and wait at least for 2 seconds.
3. Drive the vehicle at least 5 seconds at 20 km/h (13 MPH) or more.
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
This procedure may be conducted with the drive wheels lifted in the shop or by driving the vehicle. If a
road test is expected to be easier, it is unnecessary to lift the vehicle.
4. Check 1st trip DTC.
Is 1st trip DTC detected?
YES
>> Proceed to
NO
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000007358692
1.
CHECK DTC WITH TCM
Check DTC with TCM. Refer to
TM-37, "CONSULT Function (TRANSMISSION)"
.
Is the inspection result normal?
YES
>> GO TO 2.
DTC No.
Trouble diagnosis
(Trouble diagnosis content)
DTC detecting condition
Possible cause
P0500
VEH SPEED SEN/CIRC
(Vehicle speed sensor)
At 20 km/h (13 MPH), ECM detects the fol-
lowing status continuously for 5 seconds or
more: The difference between a vehicle
speed calculated by a output speed sensor
transmitted from TCM to ECM via CAN com-
munication and the vehicle speed indicated
on the combination meter exceeds 15km/h
(10 MPH).
• Harness or connector
(The CAN communication line is open
or shorted.)
• Combination meter
• ABS actuator and electric unit (control
unit)
• Wheel sensor
• TCM
• Output speed sensor
August 2012
2012 Pathfinder
P0500 VSS
EC-821
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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NO
>> Perform trouble shooting relevant to DTC indicated.
2.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
Check DTC with ABS actuator and electric unit (control unit). Refer to
BRC-138, "CONSULT Function (ABS)"
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Perform trouble shooting relevant to DTC indicated.
3.
CHECK DTC WITH COMBINATION METER
Check DTC with combination meter. Refer to
MWI-27, "CONSULT Function (METER/M&A)"
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Perform trouble shooting relevant to DTC indicated.
4.
CHECK OUTPUT SPEED SENSOR
Check output speed sensor. Refer to
.
Is the inspection result normal?
YES
>> GO TO 5.
NO
>> Replace or replace error-detected parts.
5.
CHECK WHEEL SENSOR
Check wheel sensor. Refer to
BRC-48, "Component Inspection"
(TYPE 2).
Is the inspection result normal?
YES
>> Check intermittent incident. Refer to
GI-37, "Intermittent Incident"
.
NO
>> Replace or replace error-detected parts.
August 2012
2012 Pathfinder
EC-822
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0506 ISC SYSTEM
P0506 ISC SYSTEM
Description
INFOID:0000000007358693
NOTE:
If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.
The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idling speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration and engine load (air conditioner, power steering and cooling fan
operation, etc.).
On Board Diagnosis Logic
INFOID:0000000007358694
DTC Confirmation Procedure
INFOID:0000000007358695
NOTE:
•
If the target idle speed is out of the specified value, perform
EC-597, "Idle Air Volume Learning"
,
before conducting DTC Confirmation Procedure. For the target idle speed, refer to
.
• If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
•
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
•
Always perform the test at a temperature above
−
10
°
C(14
°
F).
1. Open engine hood.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and run it for at least 1 minute at idle speed.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000007358696
1.
CHECK INTAKE AIR LEAKAGE
1. Start engine and let it idle.
2. Listen for an intake air leakage after the mass air flow sensor.
OK or NG
OK
>> GO TO 2.
NG
>> Discover air leakage location and repair.
2.
REPLACE ECM
1. Stop engine.
2. Replace ECM.
3. Perform initialization of NVIS(NATS) system and registration of all NVIS(NATS) ignition key IDs. Refer to
SEC-10, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0506
0506
Idle speed control system
RPM lower than expected
The idle speed is less than the target idle speed
by 100 rpm or more.
• Electric throttle control actuator
• Intake air leak
August 2012
2012 Pathfinder
P0506 ISC SYSTEM
EC-823
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
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system) or
SEC-120, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"
(without
intelligent key system).
4. Perform
5. Perform
EC-597, "Accelerator Pedal Released Position Learning"
.
6. Perform
EC-597, "Throttle Valve Closed Position Learning"
7. Perform
EC-597, "Idle Air Volume Learning"
.
>>
INSPECTION END
August 2012
2012 Pathfinder
EC-824
< DTC/CIRCUIT DIAGNOSIS >
[VK56DE]
P0507 ISC SYSTEM
P0507 ISC SYSTEM
Description
INFOID:0000000007358697
NOTE:
If DTC P0506 is displayed with other DTC, first perform the trouble diagnosis for the other DTC.
The ECM controls the engine idle speed to a specified level through the fine adjustment of the air, which is let
into the intake manifold, by operating the electric throttle control actuator. The operating of the throttle valve is
varied to allow for optimum control of the engine idling speed. The crankshaft position sensor (POS) detects
the actual engine speed and sends a signal to the ECM.
The ECM controls the electric throttle control actuator so that the engine speed coincides with the target value
memorized in the ECM. The target engine speed is the lowest speed at which the engine can operate steadily.
The optimum value stored in the ECM is determined by taking into consideration various engine conditions,
such as during warming up, deceleration and engine load (air conditioner, power steering and cooling fan
operation, etc.).
On Board Diagnosis Logic
INFOID:0000000007358698
DTC Confirmation Procedure
INFOID:0000000007358699
NOTE:
•
If the target idle speed is out of the specified value, perform
EC-597, "Idle Air Volume Learning"
,
before conducting DTC Confirmation Procedure. For the target idle speed, refer to
.
• If DTC Confirmation Procedure has been previously conducted, always perform the following procedure
before conducting the next test.
1. Turn ignition switch OFF and wait at least 10 seconds.
2. Turn ignition switch ON.
3. Turn ignition switch OFF and wait at least 10 seconds.
TESTING CONDITION:
•
Before performing the following procedure, confirm that battery voltage is more than 11 V at idle.
•
Always perform the test at a temperature above
−
10
°
C(14
°
F).
1. Open engine hood.
2. Start engine and warm it up to normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Turn ignition switch ON.
5. Turn ignition switch OFF and wait at least 10 seconds.
6. Start engine and run it for at least 1 minute at idle speed.
7. Check 1st trip DTC.
8. If 1st trip DTC is detected, go to
Diagnosis Procedure
INFOID:0000000007358700
1.
CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected correctly.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace malfunctioning part.
2.
CHECK INTAKE AIR LEAKAGE
1. Start engine and let it idle.
2. Listen for an intake air leakage after the mass air flow sensor.
OK or NG
OK
>> GO TO 3.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0507
0507
Idle speed control system
RPM higher than expected
The idle speed is more than the target idle
speed by 200 rpm or more.
• Electric throttle control actuator
• Intake air leak
• PCV system
August 2012
2012 Pathfinder
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