Nissan Frontier D22. Manual — part 434
DTC P0181 FTT SENSOR
EC-839
[VG33E]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Diagnostic Procedure
UBS00DJ2
1.
CHECK FUEL TANK TEMPERATURE 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 T 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 C1, M67
●
Harness connectors M81, F36
●
Harness for open or short between ECM and fuel tank temperature sensor
>> Repair harness or connector.
3.
CHECK FUEL TANK TEMPERATURE 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.
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness for open between fuel tank temperature sensor and body ground
●
Harness connectors C1, M67
>> Repair open circuit or short to power in harness or connectors.
LEC764
Voltage: Approximately 5V
SEC310C
Continuity should exist.
EC-840
[VG33E]
DTC P0181 FTT SENSOR
5.
CHECK FUEL TANK TEMPERATURE SENSOR
1.
Remove fuel level sensor unit.
2.
Check resistance fuel level sensor unit terminals T and E by
heating with hot water or heat gun as shown in the figure.
OK or NG
OK
>> GO TO 6.
NG
>> Replace fuel tank temperature sensor.
6.
CHECK INTERMITTENT INCIDENT
EC-696, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END.
Removal and Installation
UBS00DJ3
FUEL TANK TEMPERATURE SENSOR
FL-6, "FUEL LEVEL SENSOR UNIT AND FUEL PUMP ASSEMBLY"
.
Temperature
°C (°F)
Resistance k
Ω
20 (68)
2.3 - 2.7
50 (122)
0.79 - 0.90
PBIB1425E
DTC P0182, P0183 FTT SENSOR
EC-841
[VG33E]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P0182, P0183 FTT SENSOR
PFP:22630
Component Description
UBS00DJ4
The fuel tank temperature sensor is used to detect the fuel tempera-
ture inside the fuel tank. The sensor modifies a voltage signal from
the ECM. The modified signal returns to the ECM as the fuel temper-
ature input. The sensor uses a thermistor which is sensitive to the
change in temperature. The electrical resistance of the thermistor
decreases as temperature increases.
<Reference data>
*: These data are reference values and are measured between ECM terminal 60
(Fuel tank temperature sensor) and 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 the ECM terminals, such as the ground.
On Board Diagnosis Logic
UBS00DJ5
DTC Confirmation Procedure
UBS00DJ6
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.
WITH CONSULT-II
1.
Turn ignition switch ON.
2.
Select “DATA MONITOR” mode with CONSULT-II.
3.
Wait at least 10 seconds.
4.
If 1st trip DTC is detected, go to
EC-843, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II”.
LEC764
Fluid temperature
°C (°F)
Voltage*
(V)
Resistance
(k
Ω)
20 (68)
3.5
2.3 - 2.7
50 (122)
2.2
0.79 - 0.90
SEF012P
DTC No.
Trouble diagnosis name
DTC detecting condition
Possible cause
P0182
Fuel tank temperature
sensor circuit low input
An excessively low voltage from the sensor is
sent to ECM.
●
Harness or connectors
(The sensor circuit is open or shorted.)
●
Fuel tank temperature sensor
P0183
Fuel tank temperature
sensor circuit high input
An excessively high voltage from the sensor is
sent to ECM.
SEF174Y
EC-842
[VG33E]
DTC P0182, P0183 FTT SENSOR
Wiring Diagram
UBS00DJ7
BBWA1084E
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