Infiniti M35/M45 Y50. Manual — part 643
DTC P0181 FTT SENSOR
EC-1045
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
Wiring Diagram
NBS005FK
TBWT1538E
EC-1046
[VK45DE]
DTC P0181 FTT SENSOR
Diagnostic Procedure
NBS005FL
1.
CHECK GROUND CONNECTIONS
1.
Turn ignition switch OFF.
2.
Loosen and retighten ground screws on the body.
Refer to
OK or NG
OK
>> GO TO 2.
NG
>> Repair or replace ground connections.
2.
CHECK DTC WITH “UNIFIED METER AND A/C AMP.”
Refer to
.
OK or NG
OK
>> GO TO 3.
NG
>> Go to
DI-22, "Fuel Level Sensor Signal 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 (1).
–
Illustration shows the view with rear seat cushion and inspection
hole cover (RH) removed.
–
: Vehicle front
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.
1.
Body ground M70
2.
Body ground M16
PBIB2782E
PBIB2706E
Voltage: Approximately 5V
PBIB0932E
DTC P0181 FTT SENSOR
EC-1047
[VK45DE]
C
D
E
F
G
H
I
J
K
L
M
A
EC
4.
DETECT MALFUNCTIONING PART
Check the following.
●
Harness connectors M66, B418
●
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.
5.
CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT
1.
Turn ignition switch OFF.
2.
Disconnect “unified meter and A/C amp.” harness connector.
3.
Check harness continuity between “fuel level sensor unit and fuel pump” terminal 5 and “unified meter and
A/C amp.” terminal 58.
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 M66, B418
●
Harness for open or short between “fuel level sensor unit and fuel pump” and “unified meter and A/C
amp.”
>> Repair open circuit or short to ground or short to power in harness or connector.
7.
CHECK FUEL TANK TEMPERATURE SENSOR
Refer to
EC-1048, "Component Inspection"
.
OK or NG
OK
>> GO TO 8.
NG
>> Replace “fuel level sensor unit and fuel pump”.
8.
CHECK INTERMITTENT INCIDENT
Refer to
EC-857, "TROUBLE DIAGNOSIS FOR INTERMITTENT INCIDENT"
>> INSPECTION END
Continuity should exist.
EC-1048
[VK45DE]
DTC P0181 FTT SENSOR
Component Inspection
NBS005FM
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 or heat gun as
shown in the figure.
Removal and Installation
NBS005FN
FUEL TANK TEMPERATURE SENSOR
Refer to
FL-4, "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
PBIB0931E
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст