Infiniti G35 (V35). Manual — part 366
DTC P0181 FTT SENSOR
EC-345
C
D
E
F
G
H
I
J
K
L
M
A
EC
WITH GST
Follow the procedure “WITH CONSULT-II” above.
EC-346
DTC P0181 FTT SENSOR
Wiring Diagram
NBS000R8
TBWM1118E
DTC P0181 FTT SENSOR
EC-347
C
D
E
F
G
H
I
J
K
L
M
A
EC
Diagnostic Procedure
NBS000R9
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 FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT
1.
Disconnect “fuel level sensor unit and fuel pump” harness con-
nector.
2.
Turn ignition switch ON.
3.
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 4.
NG
>> GO TO 3.
3.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M72, F102
●
Harness connectors B1, M12
●
Harness for open or short between ECM and “fuel level sensor unit and fuel pump”
>> Repair open circuit or short to ground or short to power in harness or connector.
PBIB2192E
PBIB1280E
Voltage: Approximately 5V
PBIB0932E
EC-348
DTC P0181 FTT SENSOR
4.
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 and fuel pump” terminal 5 and ground.
Refer to Wiring Diagram.
3.
Also check harness for short to power.
OK or NG
OK
>> GO TO 6.
NG
>> GO TO 5.
5.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors B1, M12
●
Harness for open or short between “fuel level sensor unit and fuel pump” and ground.
>> Repair open circuit or short to power in harness or connector.
6.
CHECK FUEL TANK TEMPERATURE SENSOR
Refer to
EC-348, "Component Inspection"
OK or NG
OK
>> GO TO 7.
NG
>> Replace fuel level sensor unit.
7.
CHECK INTERMITTENT INCIDENT
Refer to
EC-151, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
.
>> INSPECTION END
Component Inspection
NBS000RA
FUEL TANK TEMPERATURE SENSOR
1.
Remove fuel level sensor unit.
2.
Check resistance between “fuel level sensor unit and fuel pump”
terminals 4 and 5 by heating with hot water as shown in the fig-
ure.
3.
If NG, replace fuel level sensor unit.
Removal and Installation
NBS000RB
FUEL TANK TEMPERATURE SENSOR
Refer to
FL-5, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"
Continuity should exist.
Temperature
°
C (
°
F)
Resistance k
Ω
20 (68)
2.3 - 2.7
50 (122)
0.79 - 0.90
PBIB0931E
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