Nissan Frontier D22. Manual — part 615
DTC P0461 FUEL LEVEL SENSOR
EC-1563
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
WITH GST
NOTE:
Start from step 11, 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-1218, "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.
6.
Set voltmeters probe between ECM terminal 46 (fuel level sen-
sor signal) and ground.
7.
Turn ignition switch ON.
8.
Check voltage between ECM terminal 46 and ground and note
it.
9.
Drain fuel by 30 (7-7/8 US gal, 6-5/8 Imp gal) from the fuel
tank using proper equipment.
10. Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
11. Confirm that the voltage between ECM terminal 46 and ground
changes more than 0.03V during step 8 - 10.
If NG, check component of fuel level sensor, refer to
"FUEL LEVEL SENSOR UNIT CHECK"
SEF802Z
EC-1564
[VG33ER]
DTC P0462, P0463 FUEL LEVEL SENSOR
DTC P0462, P0463 FUEL LEVEL SENSOR
PFP:25060
Component Description
UBS00DYR
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 ECM.
It consists of two parts, one is mechanical float and the other side is
variable resistor. Fuel level sensor output voltage changes depend-
ing on the movement of the fuel mechanical float.
On Board Diagnosis Logic
UBS00DYS
ECM receives two signals from the fuel level sensor circuit.
One is fuel level sensor power supply circuit, and the other is fuel level sensor ground circuit.
This diagnosis indicates the former, to detect open or short circuit malfunction.
DTC Confirmation Procedure
UBS00DYT
NOTE:
If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 5 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
WITH GST
Follow the procedure “WITH CONSULT-II” above.
SEF800Z
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0462
Fuel level sensor circuit
low input
An excessively low voltage is sent from the
sensor is sent to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted)
●
Fuel level sensor
P0463
Fuel level sensor circuit
high input
An excessively high voltage is sent from the
sensor is sent to ECM.
SEF195Y
DTC P0462, P0463 FUEL LEVEL SENSOR
EC-1565
[VG33ER]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
UBS00DYU
BBWA1089E
EC-1566
[VG33ER]
DTC P0462, P0463 FUEL LEVEL SENSOR
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
UBS00DYV
1.
CHECK FUEL LEVEL SENSOR POWER SUPPLY CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect fuel level sensor unit harness connector.
3.
Turn ignition switch ON.
4.
Check voltage between fuel level sensor unit terminal G 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 M67, C1
●
Harness for open or short between combination meter and fuel level sensor unit
>> Repair open circuit or short to ground or short to power in harness or connectors.
3.
CHECK FUEL LEVEL SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Check harness continuity between fuel level sensor unit terminal E and body ground. Refer to Wiring Dia-
gram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
TER-
MINAL
NO.
WIRE
COLOR
ITEM
CONDITION
DATA (DC Voltage)
46
G
Fuel level sensor
[Ignition switch: ON]
Approximately 0 - 4.8V
Output voltage varies with fuel
level.
66
B
Fuel level sensor
ground
[Engine is running]
●
Idle speed
Approximately 0V
Voltage: Approximately 12V
PBIB1427E
Continuity should exist.
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