Nissan Pathfinder (2009 year). Instruction — part 343
EC-758
< COMPONENT DIAGNOSIS >
[VK56DE]
P0461 FUEL LEVEL SENSOR
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.
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:0000000003936691
1.
CHECK DTC WITH COMBINATION METER
.
OK or NG
OK
>> GO TO 2.
NG
>> Go to
MWI-32, "Component Function Check"
.
2.
CHECK INTERMITTENT INCIDENT
GI-49, "Intermittent Incident"
>> INSPECTION END
2009 Pathfinder
P0462, P0463 FUEL LEVEL SENSOR
EC-759
< COMPONENT DIAGNOSIS >
[VK56DE]
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P0462, P0463 FUEL LEVEL SENSOR
Component Description
INFOID:0000000004333373
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:0000000003936693
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-774, "DTC Confirmation Procedure"
DTC Confirmation Procedure
INFOID:0000000003936694
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:0000000003936695
1.
CHECK COMBINATION METER FUNCTION
.
OK or NG
OK
>> GO TO 2.
NG
>> Go to
MWI-32, "Component Function Check"
.
2.
CHECK INTERMITTENT INCIDENT
GI-49, "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.
2009 Pathfinder
EC-760
< COMPONENT DIAGNOSIS >
[VK56DE]
P0462, P0463 FUEL LEVEL SENSOR
>> INSPECTION END
2009 Pathfinder
P0500 VSS
EC-761
< COMPONENT DIAGNOSIS >
[VK56DE]
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P0500 VSS
Description
INFOID:0000000003936696
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
EC-774, "DTC Confirmation Procedure"
.
The vehicle speed signal is sent to the combination meter (unified meter control unit) from the “ABS actuator
and electric unit (control unit)” via the CAN communication line. The combination meter (unified meter control
unit) then sends a signal to the ECM via the CAN communication line.
On Board Diagnosis Logic
INFOID:0000000003936697
FAIL-SAFE MODE
When the malfunction is detected, the ECM enters fail-safe mode.
DTC Confirmation Procedure
INFOID:0000000003936698
CAUTION:
Always drive vehicle at a safe speed.
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:
Steps 1 and 2 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.
WITH CONSULT-III
1.
Start engine (VDC switch OFF).
2.
Read “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT-III. The vehicle speed on CON-
SULT-III should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.
If NG, go to
If OK, go to following step.
3.
Select “DATA MONITOR” mode with CONSULT-III.
4.
Warm engine up to normal operating temperature.
5.
Maintain the following conditions for at least 60 consecutive seconds.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0500
0500
Vehicle speed sensor
The vehicle speed signal sent to ECM
is almost 0 km/h (0 MPH) even when
vehicle is being driven.
• Harness or connectors
(The CAN communication line is open or shorted)
• Harness or connectors
(The vehicle speed signal circuit is open or shorted)
• Wheel sensor
• Combination meter (unified meter control unit)
• ABS actuator and electric unit (control unit)
Detected items
Engine operating condition in fail-safe mode
Vehicle speed signal
When the fail-safe system for vehicle speed signal is activated, the cooling fan operates (High) while
engine is running.
ENG SPEED
1,400 - 6,000 rpm
COOLAN TEMP/S
More than 70
°
C (158
°
F)
B/FUEL SCHDL
8.8 - 31.8 msec
2009 Pathfinder
EC-762
< COMPONENT DIAGNOSIS >
[VK56DE]
P0500 VSS
6.
Check 1st trip DTC.
7.
If 1st trip DTC is detected, go to
Overall Function Check
INFOID:0000000003936699
Use this procedure to check the overall function of the vehicle speed signal circuit. During this check, a 1st trip
DTC might not be confirmed.
WITH GST
1.
Lift up drive wheels.
2.
Start engine.
3.
Read vehicle speed signal in Service $01 with GST.
The vehicle speed signal on GST should be able to exceed 10 km/h (6 MPH) when rotating wheels with
suitable gear position.
4.
If NG, go to
Diagnosis Procedure
INFOID:0000000003936700
1.
CHECK DTC WITH ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)
BRC-26, "CONSULT-III Function (ABS)"
or
BRC-153, "CONSULT-III Function (ABS)"
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace malfunctioning part.
2.
CHECK COMBINATION METER FUNCTION
MWI-24, "CONSULT-III Function (METER/M&A)"
.
>> INSPECTION END
Selector lever
Except P or N position
PW/ST SIGNAL
OFF
2009 Pathfinder
P0506 ISC SYSTEM
EC-763
< COMPONENT DIAGNOSIS >
[VK56DE]
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P0506 ISC SYSTEM
Description
INFOID:0000000003936701
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:0000000003936702
DTC Confirmation Procedure
INFOID:0000000003936703
NOTE:
• If the target idle speed is out of the specified value, perform
EC-500, "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:0000000003936704
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-8, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"
(with intelligent key sys-
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
2009 Pathfinder
EC-764
< COMPONENT DIAGNOSIS >
[VK56DE]
P0506 ISC SYSTEM
tem) or
SEC-124, "ECM RE-COMMUNICATING FUNCTION : Special Repair Requirement"
(without intel-
ligent key system).
4.
5.
EC-500, "Accelerator Pedal Released Position Learning"
6.
EC-500, "Throttle Valve Closed Position Learning"
7.
EC-500, "Idle Air Volume Learning"
.
>> INSPECTION END
2009 Pathfinder
P0507 ISC SYSTEM
EC-765
< COMPONENT DIAGNOSIS >
[VK56DE]
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P0507 ISC SYSTEM
Description
INFOID:0000000004333374
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:0000000003936706
DTC Confirmation Procedure
INFOID:0000000003936707
NOTE:
• If the target idle speed is out of the specified value, perform
EC-500, "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:0000000003936708
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
2009 Pathfinder
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