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SEC082D
Component Description
NFEC0920
The fuel tank temperature sensor is used to detect the fuel tem-
perature inside the fuel tank. The sensor modifies a voltage signal
from the ECM. The modified signal returns to the ECM as the fuel
temperature input. The sensor uses a thermistor which is sensitive
to the change in temperature. The electrical resistance of the ther-
mistor decreases as temperature increases.
SEF012P
<Reference data>
Fuel temperature
°C (°F)
Voltage* V Resistance kΩ
20 (68) 3.5 2.3 - 2.7
50 (122) 2.2 0.79 - 0.90
*: These data are reference values and are measured between ECM terminal 75
(Fuel tank temperature sensor) and body ground.
CAUTION:
Do not use ECM ground terminals when measuring input/
output voltage. Doing so may result in damage to the ECM’s
transistor. Use a ground other than ECM terminals, such as
the ground.
On Board Diagnosis Logic
NFEC0921
DTC No.
Trouble diagnosis
name
DTC Detecting Condition Possible Cause
P0182
0182
Fuel tank temperature
sensor circuit low
input
An excessively low voltage from the sensor is sent
to ECM.
I Harness or connectors
(The sensor circuit is open or
shorted.)
I Fuel tank temperature sensor
P0183
0183
Fuel tank temperature
sensor circuit high
input
An excessively high voltage from the sensor is
sent to ECM.
DTC Confirmation Procedure
NFEC0922
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.
GI
MA
EM
LC
FE
CL
MT
AT
AX
SU
BR
ST
RS
BT
HA
SC
EL
IDX
DTC P0182, P0183 FTT SENSOR
Component Description
EC-285
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