2004 INFINITI FX35 Service Manual

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Page 2385 of 4449

INFINITI FX35 2004 Service Manual EC-1044
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DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUIT
Revision: 2004 November 2004 FX35/FX45
DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUITPFP:25060
Component DescriptionABS00C75
The fuel level sens

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INFINITI FX35 2004 Service Manual DTC P0462, P0463 FUEL LEVEL SENSOR CIRCUIT
EC-1045
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Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureABS00C78
1. CHECK DTC WITH “UNIFIED METER AND A/C AMP

Page 2387 of 4449

INFINITI FX35 2004 Service Manual EC-1046
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DTC P0500 VSS
Revision: 2004 November 2004 FX35/FX45
DTC P0500 VSSPFP:32702
DescriptionABS00C7A
NOTE:
If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diag

EC-1046
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DTC P0500 VSS
Revision: 2004 November 2004 FX35/FX45
DTC P0500 VSSPFP:32702
DescriptionABS00C7A
NOTE:
If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to EC-792, "
DTC U1000, U1001 CAN COMMUNICATION LINE" .
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 LogicABS00C7B
DTC Confirmation ProcedureABS00C7C
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-1047, "
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-1047, "
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 1,600 - 6,000 rpm
COOLAN TEMP/S More than 70°C (158°F)
B/FUEL SCHDL More than 4.5 msec
Selector lever Except P or N position
PW/ST SIGNAL OFF
SEF196Y

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INFINITI FX35 2004 Service Manual DTC P0500 VSS
EC-1047
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Revision: 2004 November 2004 FX35/FX45
Overall Function CheckABS00C7D
Use this procedure to check the overall function of the vehicle speed sen

Page 2389 of 4449

INFINITI FX35 2004 Service Manual EC-1048
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DTC P0506 ISC SYSTEM
Revision: 2004 November 2004 FX35/FX45
DTC P0506 ISC SYSTEMPFP:23781
DescriptionABS00C7F
NOTE:
If DTC P0506 is displayed with other DTC, first perform the trouble

EC-1048
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DTC P0506 ISC SYSTEM
Revision: 2004 November 2004 FX35/FX45
DTC P0506 ISC SYSTEMPFP:23781
DescriptionABS00C7F
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 LogicABS00C7G
DTC Confirmation ProcedureABS00C7H
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 Idle Air Volume Learning, EC-698 ,
before conducting DTC Confirmation Procedure. For the target idle speed, refer to the EC-1336,
"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-1049, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0506
0506Idle speed control sys-
tem RPM lower than
expectedThe idle speed is less than the target idle
speed by 100 rpm or more.
Electric throttle control actuator
Intake air leak
SEF174Y

Page 2390 of 4449

INFINITI FX35 2004 Service Manual DTC P0506 ISC SYSTEM
EC-1049
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Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureABS00C7I
1. CHECK INTAKE AIR LEAK
1. Start engine and let it idle.
2. Listen

Page 2391 of 4449

INFINITI FX35 2004 Service Manual EC-1050
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DTC P0507 ISC SYSTEM
Revision: 2004 November 2004 FX35/FX45
DTC P0507 ISC SYSTEMPFP:23781
DescriptionABS00C7J
NOTE:
If DTC P0507 is displayed with other DTC, first perform the trouble

EC-1050
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DTC P0507 ISC SYSTEM
Revision: 2004 November 2004 FX35/FX45
DTC P0507 ISC SYSTEMPFP:23781
DescriptionABS00C7J
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 LogicABS00C7K
DTC Confirmation ProcedureABS00C7L
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 Idle Air Volume Learning, EC-698 ,
before conducting DTC Confirmation Procedure. For the target idle speed, refer to the EC-1336,
"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-1051, "
Diagnostic Proce-
dure" .
WITH GST
Follow the procedure “WITH CONSULT-II” above.
DTC No. Trouble diagnosis name DTC detecting condition Possible cause
P0507
0507Idle speed control sys-
tem RPM higher than
expectedThe idle speed is more than the target idle
speed by 200 rpm or more.
Electric throttle control actuator
Intake air leak
PCV system
SEF174Y

Page 2392 of 4449

INFINITI FX35 2004 Service Manual DTC P0507 ISC SYSTEM
EC-1051
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Revision: 2004 November 2004 FX35/FX45
Diagnostic ProcedureABS00C7M
1. CHECK PCV HOSE CONNECTION
Confirm that PCV hose is connected corr

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