Nissan Pathfinder (2005 year). Instruction — part 177
DTC P0181 FTT SENSOR
EC-267
C
D
E
F
G
H
I
J
K
L
M
A
EC
2005 Pathfinder
WITH GST
Follow the procedure “WITH CONSULT-II” above.
EC-268
DTC P0181 FTT SENSOR
2005 Pathfinder
Wiring Diagram
UBS00K7L
BBWA1743E
DTC P0181 FTT SENSOR
EC-269
C
D
E
F
G
H
I
J
K
L
M
A
EC
2005 Pathfinder
Diagnostic Procedure
UBS00K7M
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten three ground screws on the body. Refer to
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK DTC WITH COMBINATION METER
Refer to
.
OK or NG
OK
>> GO TO 3.
NG
>> Go to
DI-23, "Fuel Level Sensor Unit Inspection"
.
3.
CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
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 “fuel level sensor unit and fuel pump”
terminal 4 and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
BBIA0539E
BBIA0545E
Voltage: Approximately 5V
PBIB0932E
EC-270
DTC P0181 FTT SENSOR
2005 Pathfinder
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E41, C1
●
Harness for open or short between ECM and “fuel level sensor unit and fuel pump”
>> Repair harness or connector.
5.
CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter harness connector.
3.
Check harness continuity between “fuel level sensor unit and fuel pump” terminal 2 and combination
meter terminal 9. Refer to Wiring Diagram.
4.
Also check harness for short to ground and short to power.
OK or NG
OK
>> GO TO 7.
NG
>> GO TO 6.
6.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors E41, C1
●
Harness connectors E152, M31
●
Harness for open or short between “fuel level sensor unit and fuel pump” and combination meter
>> Repair open circuit or short to ground or short to power in harness or connector.
7.
CHECK FUEL TANK TEMPERATURE SENSOR
Refer to
EC-270, "Component Inspection"
.
OK or NG
OK
>> GO TO 8.
NG
>> Replace fuel level sensor unit.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-158, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
UBS00K7N
FUEL TANK TEMPERATURE SENSOR
1.
Remove fuel level sensor unit.
Continuity should exist.
DTC P0181 FTT SENSOR
EC-271
C
D
E
F
G
H
I
J
K
L
M
A
EC
2005 Pathfinder
2.
Check resistance between “fuel level sensor unit and fuel pump”
terminals 3 and 4 by heating with hot water or heat gun as
shown in the figure.
Removal and Installation
UBS00K7O
FUEL TANK TEMPERATURE SENSOR
Refer to
FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"
.
Temperature
°
C (
°
F)
Resistance k
Ω
20 (68)
2.3 - 2.7
50 (122)
0.79 - 0.90
PBIB2663E
EC-272
DTC P0182, P0183 FTT SENSOR
2005 Pathfinder
DTC P0182, P0183 FTT SENSOR
PFP:22630
Component Description
UBS00K7P
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>
*: This data is reference value and is measured between ECM terminal 107 (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
UBS00K7Q
DTC Confirmation Procedure
UBS00K7R
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.
WITH CONSULT-II
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
EC-274, "Diagnostic Procedure"
.
WITH GST
Follow the procedure “WITH CONSULT-II” above.
BBIA0545E
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
0182
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
0183
Fuel tank temperature
sensor circuit high input
An excessively high voltage from the sensor is
sent to ECM.
SEF174Y
DTC P0182, P0183 FTT SENSOR
EC-273
C
D
E
F
G
H
I
J
K
L
M
A
EC
2005 Pathfinder
Wiring Diagram
UBS00K7S
BBWA1743E
EC-274
DTC P0182, P0183 FTT SENSOR
2005 Pathfinder
Diagnostic Procedure
UBS00K7T
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten three ground screws on the body. Refer to
.
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK DTC WITH COMBINATION METER
Refer to
.
OK or NG
OK
>> GO TO 3.
NG
>> Go to
DI-23, "Fuel Level Sensor Unit Inspection"
.
3.
CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
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 “fuel level sensor unit and fuel pump”
terminal 4 and ground with CONSULT-II or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
BBIA0539E
BBIA0545E
Voltage: Approximately 5V
PBIB0932E
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