Nissan Pathfinder (2006 year). Instruction — part 200
DTC P0462, P0463 FUEL LEVEL SENSOR
EC-459
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2006 Pathfinder
DTC P0462, P0463 FUEL LEVEL SENSOR
PFP:25060
Component Description
UBS00KAM
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 through 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
UBS00KAN
NOTE:
●
If DTC P0462 or P0463 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis
for DTC U1000, U1001. Refer to
EC-153, "DTC U1000, U1001 CAN COMMUNICATION LINE"
●
If DTC P0462 or P0463 is displayed with DTC U1010, first perform the trouble diagnosis for DTC
U1010. Refer to
EC-156, "DTC U1010 CAN COMMUNICATION"
This diagnosis indicates the former, to detect open or short circuit malfunction.
DTC Confirmation Procedure
UBS00KAO
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
TESTING CONDITION:
Before performing the following procedure, confirm that battery voltage is more than 11V at ignition
switch ON.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Wait at least 5 seconds.
4.
If 1st trip DTC is detected, go to
EC-460, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
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.
SEF195Y
EC-460
DTC P0462, P0463 FUEL LEVEL SENSOR
2006 Pathfinder
Diagnostic Procedure
UBS00KAP
1.
CHECK COMBINATION METER FUNCTION
OK or NG
OK
>> GO TO 2.
NG
>> Go to
DI-23, "Fuel Level Sensor Unit Inspection"
2.
CHECK INTERMITTENT INCIDENT
EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Removal and Installation
UBS00KAQ
FUEL LEVEL SENSOR
FL-6, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"
DTC P0500 VSS
EC-461
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2006 Pathfinder
DTC P0500 VSS
PFP:32702
Description
UBS00KAR
NOTE:
●
If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to
EC-153, "DTC U1000, U1001 CAN COMMUNICATION LINE"
●
If DTC P0500 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to
EC-156, "DTC U1010 CAN COMMUNICATION"
The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control
unit)” by CAN communication line. The combination meter then sends a signal to the ECM by CAN communi-
cation line.
On Board Diagnosis Logic
UBS00KAS
The MIL will not light up for this diagnosis.
DTC Confirmation Procedure
UBS00KAT
CAUTION:
Always drive vehicle at a safe speed.
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.
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-II
1.
Start engine (VDC switch OFF).
2.
Read “VHCL SPEED SE” in “DATA MONITOR” mode with CONSULT-II. The vehicle speed on CONSULT-
II should exceed 10 km/h (6 MPH) when rotating wheels with suitable gear position.
If NG, go to
EC-462, "Diagnostic Procedure"
If OK, go to following step.
3.
Select “DATA MONITOR” mode with CONSULT-II.
4.
Warm engine up to normal operating temperature.
5.
Maintain the following conditions for at least 60 consecutive sec-
onds.
6.
If 1st trip DTC is detected, go to
EC-462, "Diagnostic Procedure"
.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0500
0500
Vehicle speed sensor
The almost 0 km/h (0 MPH) signal from
vehicle speed sensor is sent to ECM
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
●
ABS actuator and electric unit (control unit)
ENG SPEED
1,700 - 6,000 rpm
COOLAN TEMP/S
More than 70
°
C (158
°
F)
B/FUEL SCHDL
6.3 - 31.8 msec
Selector lever
Except P or N position
PW/ST SIGNAL
OFF
SEF196Y
EC-462
DTC P0500 VSS
2006 Pathfinder
Overall Function Check
UBS00KAU
Use this procedure to check the overall function of the vehicle speed sensor 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 sensor signal in Service $01 with GST.
The vehicle speed sensor on GST should be able to exceed 10 km/h (6 MPH) when rotating wheels with
suitable gear position.
4.
If NG, go to
EC-462, "Diagnostic Procedure"
.
Diagnostic Procedure
UBS00KAV
1.
CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”
or
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace.
2.
CHECK COMBINATION METER FUNCTION
>> INSPECTION END
DTC P0506 ISC SYSTEM
EC-463
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2006 Pathfinder
DTC P0506 ISC SYSTEM
PFP:23781
Description
UBS00KAW
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
UBS00KAX
DTC Confirmation Procedure
UBS00KAY
NOTE:
●
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
●
If the target idle speed is out of the specified value, perform,
EC-77, "Idle Air Volume Learning"
,
before conducting DTC Confirmation Procedure. For the target idle speed, refer to the
"SERVICE DATA AND SPECIFICATIONS (SDS)"
.
TESTING CONDITION:
●
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
●
Always perform the test at a temperature above
−
10
°
C (14
°
F).
WITH CONSULT-II
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 again and select “DATA MONITOR”
mode with CONSULT-II.
5.
Start engine and run it for at least 1 minute at idle speed.
6.
If 1st trip DTC is detected, go to
EC-464, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0506
0506
Idle speed control sys-
tem 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
SEF174Y
EC-464
DTC P0506 ISC SYSTEM
2006 Pathfinder
Diagnostic Procedure
UBS00KAZ
1.
CHECK INTAKE AIR LEAK
1.
Start engine and let it idle.
2.
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK
>> GO TO 2.
NG
>> Discover air leak 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
BL-102, "ECM Re-communicating Function"
4.
Perform
5.
Perform
EC-77, "Accelerator Pedal Released Position Learning"
6.
Perform
EC-77, "Throttle Valve Closed Position Learning"
.
7.
Perform
EC-77, "Idle Air Volume Learning"
>> INSPECTION END
DTC P0507 ISC SYSTEM
EC-465
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2006 Pathfinder
DTC P0507 ISC SYSTEM
PFP:23781
Description
UBS00KB0
NOTE:
If DTC P0507 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
UBS00KB1
DTC Confirmation Procedure
UBS00KB2
NOTE:
●
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait
at least 10 seconds before conducting the next test.
●
If the target idle speed is out of the specified value, perform,
EC-77, "Idle Air Volume Learning"
,
before conducting DTC Confirmation Procedure. For the target idle speed, refer to the
"SERVICE DATA AND SPECIFICATIONS (SDS)"
.
TESTING CONDITION:
●
Before performing the following procedure, confirm that battery voltage is more than 11V at idle.
●
Always perform the test at a temperature above
−
10
°
C (14
°
F).
WITH CONSULT-II
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 again and select “DATA MONITOR”
mode with CONSULT-II.
5.
Start engine and run it for at least 1 minute at idle speed.
6.
If 1st trip DTC is detected, go to
EC-466, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0507
0507
Idle speed control sys-
tem 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
SEF174Y
EC-466
DTC P0507 ISC SYSTEM
2006 Pathfinder
Diagnostic Procedure
UBS00KB3
1.
CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected correctly.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace.
2.
CHECK INTAKE AIR LEAK
1.
Start engine and let it idle.
2.
Listen for an intake air leak after the mass air flow sensor.
OK or NG
OK
>> GO TO 3.
NG
>> Discover air leak location and repair.
3.
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
BL-102, "ECM Re-communicating Function"
4.
Perform
5.
Perform
EC-77, "Accelerator Pedal Released Position Learning"
6.
Perform
EC-77, "Throttle Valve Closed Position Learning"
.
7.
Perform
EC-77, "Idle Air Volume Learning"
>> INSPECTION END
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