2006 INFINITI M35 Factory Service Manual

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Page 2737 of 5621

INFINITI M35 2006 Factory Service Manual EC-1194
[VK45DE]
DTC P0460 FUEL LEVEL SENSOR
Revision: 2006 January2006 M35/M45
DTC P0460 FUEL LEVEL SENSORPFP:25060
Component DescriptionNBS005IP
The fuel level sensor is mounted in the fuel level se

EC-1194
[VK45DE]
DTC P0460 FUEL LEVEL SENSOR
Revision: 2006 January2006 M35/M45
DTC P0460 FUEL LEVEL SENSORPFP:25060
Component DescriptionNBS005IP
The fuel level sensor is mounted in the fuel level sensor unit.
Fuel level sensor unit and fuel pump (1)
Fuel pressure regulator (2)
Fuel tank temperature sensor (3)
The sensor detects a fuel level in the fuel tank and transmits a signal
to the “unified meter and A/C amp.”. The “unified meter and A/C
amp.” 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 LogicNBS005IQ
NOTE:
If DTC P0460 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-886
.
If DTC P0460 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-889
.
When the vehicle is parked, naturally the fuel level in the fuel tank is stable. It means that output signal of the
fuel level sensor does not change. If ECM senses sloshing signal from the sensor, fuel level sensor malfunc-
tion is detected.
DTC Confirmation ProcedureNBS005IR
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.
WITH CONSULT-II
1. Turn ignition switch ON.
2. Select “DATA MONITOR” mode with CONSULT-II.
3. Start engine and wait maximum of 2 consecutive minutes.
4. If 1st trip DTC is detected, go to EC-1195, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB2707E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0460
0460Fuel level sensor circuit
noiseEven though the vehicle is parked, a signal
being varied is sent from the fuel level sensor
to ECM.
Harness or connectors
(The CAN communication line is open or
shorted)
Harness or connectors
(The sensor circuit is open or shorted)
Unified meter and A/C amp.
Fuel level sensor
SEF195Y

Page 2738 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0460 FUEL LEVEL SENSOR
EC-1195
[VK45DE]
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Revision: 2006 January2006 M35/M45
Diagnostic ProcedureNBS005IS
1. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to DI-32

Page 2739 of 5621

INFINITI M35 2006 Factory Service Manual EC-1196
[VK45DE]
DTC P0461 FUEL LEVEL SENSOR
Revision: 2006 January2006 M35/M45
DTC P0461 FUEL LEVEL SENSORPFP:25060
Component DescriptionNBS005IU
The fuel level sensor is mounted in the fuel level se

EC-1196
[VK45DE]
DTC P0461 FUEL LEVEL SENSOR
Revision: 2006 January2006 M35/M45
DTC P0461 FUEL LEVEL SENSORPFP:25060
Component DescriptionNBS005IU
The fuel level sensor is mounted in the fuel level sensor unit.
Fuel level sensor unit and fuel pump (1)
Fuel pressure regulator (2)
Fuel tank temperature sensor (3)
The sensor detects a fuel level in the fuel tank and transmits a signal
to the “unified meter and A/C amp.”. The “unified meter and A/C
amp.” 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 LogicNBS005IV
NOTE:
If DTC P0461 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-886
.
If DTC P0461 is displayed with DTC U1010, first perform the trouble diagnosis for DTC U1010.
Refer to EC-889
.
Driving long distances naturally affect fuel gauge level.
This diagnosis detects the fuel gauge malfunction of the gauge not moving even after a long distance has
been driven.
Overall Function CheckNBS005IW
Use this procedure to check the overall function of the fuel level sensor function. During this check, a 1st trip
DTC might not be confirmed.
WAR NING :
When performing following procedure, be sure to observe the handling of the fuel. Refer to FL-10,
"FUEL TANK" .
TESTING CONDITION:
Before starting overall function check, preparation of draining fuel and refilling fuel is required.
WITH CONSULT-II
NOTE:
Start from step 10, 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 EC-809, "
FUEL PRESSURE RELEASE" .
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 OFF and wait at least 10 seconds then turn ON.
PBIB2707E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0461
0461Fuel level sensor circuit
range/performanceThe output signal of the fuel level sensor does
not change within the specified range even
though the vehicle has been driven a long dis-
tance.
Harness or connectors
(The CAN communication line is open or
shorted)
Harness or connectors
(The sensor circuit is open or shorted)
Unified meter and A/C amp.
Fuel level sensor

Page 2740 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0461 FUEL LEVEL SENSOR
EC-1197
[VK45DE]
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Revision: 2006 January2006 M35/M45
6. Select “FUEL LEVEL SE” in “DATA MONITOR” mode with CON-
SULT-II.
7. Check “FUEL L

Page 2741 of 5621

INFINITI M35 2006 Factory Service Manual EC-1198
[VK45DE]
DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUIT
Revision: 2006 January2006 M35/M45
DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUITPFP:25060
Component DescriptionNBS005IZ
The fuel level sensor i

EC-1198
[VK45DE]
DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUIT
Revision: 2006 January2006 M35/M45
DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUITPFP:25060
Component DescriptionNBS005IZ
The fuel level sensor is mounted in the fuel level sensor unit.
Fuel level sensor unit and fuel pump (1)
Fuel pressure regulator (2)
Fuel tank temperature sensor (3)
The sensor detects a fuel level in the fuel tank and transmits a signal
to the “unified meter and A/C amp.”. The “unified meter and A/C
amp.” 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 LogicNBS005J0
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-886
.
If DTC P0462 or P0463 is displayed with DTC U1010, first perform the trouble diagnosis for DTC
U1010. Refer to EC-889
.
This diagnosis indicates the former, to detect open or short circuit malfunction.
DTC Confirmation ProcedureNBS005J1
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-1199, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
PBIB2707E
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0462
0462Fuel level sensor circuit
low inputAn 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)
Unified meter and A/C amp.
Fuel level sensor P0463
0463Fuel level sensor circuit
high inputAn excessively high voltage from the sensor is
sent to ECM.
SEF195Y

Page 2742 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUIT
EC-1199
[VK45DE]
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Revision: 2006 January2006 M35/M45
Diagnostic ProcedureNBS005J2
1. CHECK DTC WITH “UNIFIED METER AND A/C AMP.”

Page 2743 of 5621

INFINITI M35 2006 Factory Service Manual EC-1200
[VK45DE]
DTC P0500 VSS
Revision: 2006 January2006 M35/M45
DTC P0500 VSSPFP:32702
DescriptionNBS005J4
NOTE:
If DTC P0500 is displayed with DTC U1000 or U1001, first perform the tro

EC-1200
[VK45DE]
DTC P0500 VSS
Revision: 2006 January2006 M35/M45
DTC P0500 VSSPFP:32702
DescriptionNBS005J4
NOTE:
If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC
U1000, U1001. Refer to EC-886, "
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-889, "
DTC U1010 CAN COMMUNICATION" .
The vehicle speed signal is sent to the “unified meter and A/C amp.” from the “ABS actuator and electric unit
(control unit)” by CAN communication line. The “unified meter and A/C amp.” then sends a signal to the ECM
by CAN communication line.
On Board Diagnosis LogicNBS005J5
DTC Confirmation ProcedureNBS005J6
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-1201, "
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 50 consecutive sec-
onds.
6. If 1st trip DTC is detected, go to EC-1201, "
Diagnostic Proce-
dure" .
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0500
0500Vehicle speed sensorThe 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
Unified meter and A/C amp.
ABS actuator and electric unit (control unit)
ENG SPEED 1,550 - 6,000 rpm
COOLAN TEMP/S More than 70
C (158F)
B/FUEL SCHDL 5.4 - 31.8 msec
Selector lever Except P or N position
PW/ST SIGNAL OFF
SEF196Y

Page 2744 of 5621

INFINITI M35 2006 Factory Service Manual DTC P0500 VSS
EC-1201
[VK45DE]
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Revision: 2006 January2006 M35/M45
Overall Function CheckNBS005J7
Use this procedure to check the overall function of the vehicle spe

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