Nissan Frontier D22. Manual — part 284
DTC P0181 FTT SENSOR
EC-239
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
DTC P0181 FTT SENSOR
PFP:22630
Component Description
UBS00D5A
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 ECM terminals, such as the ground.
On Board Diagnosis Logic
UBS00D5B
DTC Confirmation Procedure
UBS00D5C
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.
If 1st trip DTC is detected, go to
EC-242, "Diagnostic Procedure"
.
If 1st trip DTC is not detected, go to following step.
4.
Check “COOLAN TEMP/S” indication.
If the indication is less than 60
°C (140°F), the result will be OK.
If the indication is above 60
°C (140°F), go to the following step.
5.
Cool engine down until “COOLAN TEMP/S” indication
decreases to less than 60
°C (140°F).
6.
Wait at least 10 seconds.
7.
If 1st trip DTC is detected, go to
EC-242, "Diagnostic Procedure"
.
SEF334VA
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
P0181
Fuel tank temperature
sensor circuit range/
performance
Rationally incorrect voltage from the sensor is
sent to ECM, compared with the voltage sig-
nals from engine coolant temperature sensor
and intake air temperature sensor.
●
Harness or connectors
(The sensor circuit is open or shorted)
●
Fuel tank temperature sensor
SEF174Y
EC-240
[KA24DE]
DTC P0181 FTT SENSOR
WITH GST
Follow the procedure “WITH CONSULT-II”.
DTC P0181 FTT SENSOR
EC-241
[KA24DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
UBS00D5D
BBWA1059E
EC-242
[KA24DE]
DTC P0181 FTT SENSOR
Diagnostic Procedure
UBS00D5E
1.
CHECK POWER SUPPLY
1.
Turn ignition switch OFF.
2.
Disconnect fuel level sensor unit and fuel pump harness con-
nector.
3.
Turn ignition switch ON.
4.
Check voltage between terminal 2 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 GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Check harness continuity between terminal 4 and body ground.
Refer to wiring Diagram.
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 connectors C1, M67
●
Harness for open or short between ECM and body ground
>> Repair open circuit or short to power in harness or connectors.
SEF334VA
Voltage
: Approximately 5V
SEF850Z
Continuity should exist.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст