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SEC088D
Component Description
NFEC1111
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
NFEC1112
ECM receives two signals from the fuel level sensor.
One is fuel level sensor power supply circuit, and the other is fuel
level sensor ground circuit.
This diagnosis indicates the latter to detect open circuit malfunc-
tion.
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P1464
1464
Fuel level sensor cir-
cuit ground signal
A high voltage from the sensor is sent to ECM. I Fuel level sensor circuit
(The fuel level sensor circuit is open
or shorted.)
DTC Confirmation Procedure
NFEC1113
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.
SEF195Y
WITH CONSULT-II
NFEC1113S01
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 “Diagnostic Procedure”,
EC-621.
WITH GST
NFEC1113S02
Follow the procedure “WITH CONSULT-II” above.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P1464 FUEL LEVEL SENSOR
Component Description
EC-619
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