Infiniti F50. Manual — part 438
DTC P0462, P0463 FUEL LEVEL SENSOR
EC-393
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EC
Specification data are reference values and are measured between each terminal and ground.
CAUTION:
Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in dam-
age to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.
Diagnostic Procedure
EBS00MFW
1.
CHECK FUEL LEVEL SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch “OFF”.
2.
Disconnect fuel level sensor unit and fuel pump harness con-
nector.
3.
Turn ignition switch “ON”.
4.
Check voltage between fuel level sensor unit and fuel pump ter-
minal 5 and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 3.
NG
>> GO TO 2.
2.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M141, B211
●
Harness connector-15
●
Harness for open or short between combination meter and fuel level sensor unit and fuel pump
>> Repair open circuit or short to ground or short to power in harness or connectors.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
119
R/L
Fuel level sensor
[Ignition switch “ON”]
Approximately 0 - 4.8V
Output voltage varies with fuel
level.
107
B
Fuel level sensor ground
[Engine is running]
●
Idle speed
Approximately 0V
PBIB1249E
Voltage: Battery voltage
PBIB0134E
EC-394
DTC P0462, P0463 FUEL LEVEL SENSOR
3.
CHECK FUEL LEVEL SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch “OFF”.
2.
Disconnect ECM harness connector.
3.
Check harness continuity between ECM terminal 107 and fuel level sensor unit and fuel pump terminal 6.
Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M141, B211
●
Harness connector-15
●
Harness for open or short between ECM and fuel level sensor unit and fuel pump
>> Repair open circuit or short to ground or short to power in harness or connectors.
5.
CHECK FUEL LEVEL SENSOR
Refer to
DI-26, "CHECK FUEL LEVEL SENSOR UNIT"
OK or NG
OK
>> GO TO 6.
NG
>> Replace fuel level sensor unit.
6.
CHECK INTERMITTENT INCIDENT
Refer to
EC-132, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Removal and Installation
EBS00MFX
FUEL LEVEL SENSOR
Refer to
FL-3, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"
Continuity should exist.
DTC P0500 VSS
EC-395
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DTC P0500 VSS
PFP:32702
Description
EBS00MFY
NOTE:
If DTC P0500 is displayed with DTC U1000 or U1001, first perform the trouble diagnosis for DTC U1000,
U1001. Refer to
EC-141, "DTC U1000, U1001 CAN COMMUNICATION LINE"
.
The vehicle speed signal is sent to the combination meter from the VDC/TCS/ABS control unit by CAN com-
munication line. The combination meter then sends a signal to the ECM by CAN communication line.
On Board Diagnosis Logic
EBS00MFZ
DTC Confirmation Procedure
EBS00MG0
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 (TCS 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-396, "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-396, "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
●
VDC/TCS/ABS control unit
ENG SPEED
1,400 - 6,000 rpm
COOLAN TEMP/S
More than 70
°
C (158
°
F)
B/FUEL SCHDL
4.5 - 31.9 msec
Selector lever
Except “P” or “N” position
PW/ST SIGNAL
OFF
SEF196Y
EC-396
DTC P0500 VSS
Overall Function Check
EBS00MG1
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 “MODE 1” 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-396, "Diagnostic Procedure"
Diagnostic Procedure
EBS00MG2
1.
CHECK DTC WITH VDC/TCS/ABS CONTROL UNIT
Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace.
2.
CHECK COMBINATION METER
Check combination meter function.
Refer to
.
>> INSPECTION END
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