Nissan Frontier D40. Manual — part 372
P0181 FTT SENSOR
EC-179
< COMPONENT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
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A
EC
N
P
O
Follow the procedure “WITH CONSULT-III” above.
Diagnosis Procedure
INFOID:0000000005273170
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten two ground screws on the body. Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK COMBINATION METER FUNCTION
.
OK or NG
OK
>> GO TO 3.
NG
>> Go to
MWI-33, "Component 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-III or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
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”
BBIA0614E
BBIA0545E
Voltage: Approximately 5V
PBIB0932E
EC-180
< COMPONENT DIAGNOSIS >
[QR25DE]
P0181 FTT SENSOR
>> 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, short to ground or short to power in harness or connector.
7.
CHECK FUEL TANK TEMPERATURE SENSOR
EC-180, "Component Inspection"
OK or NG
OK
>> GO TO 8.
NG
>> Replace “fuel level sensor unit and fuel pump”.
8.
CHECK INTERMITTENT INCIDENT
GI-46, "Intermittent Incident"
>> INSPECTION END
Component Inspection
INFOID:0000000005273171
FUEL TANK TEMPERATURE SENSOR
1.
Remove fuel level sensor unit.
2.
Check resistance between “fuel level sensor unit and fuel pump”
terminals 2 and 4 by heating with hot water or heat gun as
shown in the figure.
Continuity should exist.
Temperature [
°
C (
°
F)]
Resistance (k
Ω
20 (68)
2.3 - 2.7
50 (122)
0.79 - 0.90
PBIB2663E
P0182, P0183 FTT SENSOR
EC-181
< COMPONENT DIAGNOSIS >
[QR25DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
N
P
O
P0182, P0183 FTT SENSOR
Component Description
INFOID:0000000005273172
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:
Never 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
INFOID:0000000005273173
DTC Confirmation Procedure
INFOID:0000000005273174
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-III
1.
Turn ignition switch ON and wait at least 5 seconds.
2.
Check 1st trip DTC.
3.
If 1st trip DTC is detected, go to
WITH GST
Follow the procedure “WITH CONSULT-III” above.
Diagnosis Procedure
INFOID:0000000005273175
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
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.
EC-182
< COMPONENT DIAGNOSIS >
[QR25DE]
P0182, P0183 FTT SENSOR
2.
Loosen and retighten two ground screws on the body. Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK COMBINATION METER FUNCTION
.
OK or NG
OK
>> GO TO 3.
NG
>> Go to
MWI-33, "Component 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-III or tester.
OK or NG
OK
>> GO TO 5.
NG
>> GO TO 4.
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.
BBIA0614E
BBIA0545E
Voltage: Approximately 5V
PBIB0932E
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