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Nissan Pathfinder (2006 year). Manual - part 200

DTC P0462, P0463 FUEL LEVEL SENSOR

EC-459

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

Turn ignition switch ON.

Select “DATA MONITOR” mode with CONSULT-II.

Wait at least 5 seconds.

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

CHECK COMBINATION METER FUNCTION

Refer to

DI-4, "COMBINATION METERS"

OK or NG

>> GO TO 2.

>> Go to

DI-23, "Fuel Level Sensor Unit Inspection"

CHECK INTERMITTENT INCIDENT

Refer to

EC-144, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"

>> INSPECTION END

Removal and Installation

UBS00KAQ

FUEL LEVEL SENSOR

Refer to

FL-6, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"

DTC P0500 VSS

EC-461

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

Start engine (VDC switch OFF).

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.

Select “DATA MONITOR” mode with CONSULT-II.

Warm engine up to normal operating temperature.

Maintain the following conditions for at least 60 consecutive sec-
onds.

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

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

Lift up drive wheels.

Start engine.

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.

If NG, go to

EC-462, "Diagnostic Procedure"

Diagnostic Procedure

UBS00KAV

CHECK DTC WITH “ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT)”

Refer to

BRC-12, "TROUBLE DIAGNOSIS"

BRC-75, "TROUBLE DIAGNOSIS"

OK or NG

>> GO TO 2.

>> Repair or replace.

CHECK COMBINATION METER FUNCTION

Refer to

DI-4, "COMBINATION METERS"

>> INSPECTION END

DTC P0506 ISC SYSTEM

EC-463

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

EC-675,

"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

−

C (14

F).

WITH CONSULT-II

Open engine hood.

Start engine and warm it up to normal operating temperature.

Turn ignition switch OFF and wait at least 10 seconds.

Turn ignition switch ON again and select “DATA MONITOR”
mode with CONSULT-II.

Start engine and run it for at least 1 minute at idle speed.

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

CHECK INTAKE AIR LEAK

Start engine and let it idle.

Listen for an intake air leak after the mass air flow sensor.

OK or NG

>> GO TO 2.

>> Discover air leak location and repair.

REPLACE ECM

Stop engine.

Replace ECM.

Perform initialization of NVIS (NATS) system and registration of all NVIS (NATS) ignition key IDs. Refer to

BL-102, "ECM Re-communicating Function"

Perform

EC-76, "VIN Registration"

Perform

EC-77, "Accelerator Pedal Released Position Learning"

Perform

EC-77, "Throttle Valve Closed Position Learning"

Perform

EC-77, "Idle Air Volume Learning"

>> INSPECTION END

DTC P0507 ISC SYSTEM

EC-465

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

EC-675,

"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

−