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SEF800Z
Component Description
NGEC0994
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.
ECM Terminals and Reference Value
NGEC1000
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.
TERMI-
NAL
NO.
WIRE
COLOR
ITEM CONDITION DATA (DC Voltage)
46 P/B 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]
쐌 Idle speed
Approximately 0V
On Board Diagnosis Logic
NGEC0995
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. Malfunction is detected when a high voltage from the sensor
is sent to ECM.
POSSIBLE CAUSE
NGEC0995S01
쐌 Fuel level sensor circuit
(The fuel level sensor circuit is open or shorted.)
DTC Confirmation Procedure
NGEC0997
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.
DTC P1464 FUEL LEVEL SENSOR CIRCUIT (GROUND SIGNAL)
VG33E
Component Description
EC-1131
GI
MA
EM
LC
FE
CL
MT
AT
TF
PD
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
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