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SEC088D
Component Description
=NFEC0996
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
depending on the movement of the fuel mechanical float.
On Board Diagnostic Logic
NFEC0997
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.
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P0461
0461
Fuel level sensor cir-
cuit range/
performance
The output signal of the fuel level sensor does not
change within the specified range even though the
vehicle has been driven a long distance.
I Harness or connectors
(The level sensor circuit is open or
shorted.)
I Fuel level sensor
Overall Function Check
NFEC0998
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.
WARNING:
When performing following procedure, be sure to observe the
handling of the fuel. Refer to FE-4, “Fuel Tank”.
TESTING CONDITION:
Before starting overall function check, preparation of draining
fuel and refilling fuel is required.
SEF195Y
WITH CONSULT-II
NFEC0998S01
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 “Fuel Pressure
Release”, EC-56.
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”.
6) Select “FUEL LEVEL SE” in “DATA MONITOR” mode with
CONSULT-II.
7) Check “FUEL LEVEL SE” output voltage and note it.
8) Select “FUEL PUMP” in “ACTIVE TEST” mode with CON-
SULT-II.
9) Touch “ON” and drain fuel approximately 30 (7-7/8 US gal,
6-5/8 Imp gal) and stop it.
10) Fill fuel into the fuel tank for 30 (7-7/8 US gal, 6-5/8 Imp gal).
11) Check “FUEL LEVEL SE” output voltage and note it.
DTC P0461 FUEL LEVEL SENSOR
Component Description
EC-436
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