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 

EC-159, "Ground Inspection"

 .

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