Nissan Cube. Manual - part 335

 

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Nissan Cube. Manual - part 335

 

 

EC-226

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P0181 FTT SENSOR

• Harness connectors E8, F1
• 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.

4.

CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter harness connector.

3.

Check the continuity between “fuel level sensor unit and fuel pump” harness connector and ECM harness
connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors M79, B4
• 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.

6.

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-226, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace “fuel level sensor unit and fuel pump”. Refer to 

FL-5, "Exploded View"

.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009947342

1.

CHECK FUEL TANK TEMPERATURE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect “fuel level sensor unit and fuel pump” harness connector.

3.

Remove fuel level sensor unit. Refer to 

FL-5, "Exploded View"

.

4.

Check resistance between “fuel level sensor unit and fuel pump” terminals by heating with hot water as
shown in the figure.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace “fuel level sensor unit and fuel pump”. Refer to 

FL-5, "Exploded View"

.

Fuel level sensor unit and fuel pump

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

B40

5

M34

24

Existed

Terminals

Condition

Resistance

4 and 5

Temperature [

°

C (

°

F)]

20 (68)

2.3 - 2.7 k

50 (122)

0.79 - 0.90 k

P0182, P0183 FTT SENSOR

EC-227

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0182, P0183 FTT SENSOR

Description

INFOID:0000000009947343

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>

*: These data are reference values and are measured between ECM terminal 43 (Fuel tank temperature sensor) and ground.

DTC Logic

INFOID:0000000009947344

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always turn ignition switch OFF and wait at
least 10 seconds before conducting the next test.

>> GO TO 2.

2.

PERFORM DTC CONFIRMATION PROCEDURE

1.

Turn ignition switch ON and wait at least 5 seconds.

2.

Check 1st trip DTC.

Is 1st trip DTC detected?

YES

>> Go to 

EC-227, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009947345

1.

CHECK GROUND CONNECTION

1.

Turn ignition switch OFF.

2.

Check ground connection E38. Refer to 

GI-40, "Intermittent Incident"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace ground connection.

2.

CHECK FUEL TANK TEMPERATURE SENSOR POWER SUPPLY CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect “fuel level sensor unit and fuel pump” harness connector.

3.

Turn ignition switch ON.

4.

Check the voltage between “fuel level sensor unit and fuel pump” harness connector and ground.

Fluid temperature

[

°

C (

°

F)]

Voltage*

[V]

Resistance

[k

]

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

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

Fuel tank temperature 
sensor circuit high input

An excessively high voltage from the sensor is 
sent to ECM.

EC-228

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

P0182, P0183 FTT SENSOR

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors B4, M79
• Harness connectors M77, E105
• Harness connectors E8, F1
• 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.

4.

CHECK FUEL TANK TEMPERATURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter harness connector.

3.

Check the continuity between “fuel level sensor unit and fuel pump” harness connector and ECM harness
connector.

4.

Also check harness for short to ground and short to power.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> GO TO 5.

5.

DETECT MALFUNCTIONING PART

Check the following.
• Harness connectors M79, B4
• 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.

6.

CHECK FUEL TANK TEMPERATURE SENSOR

Refer to 

EC-228, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 7.

NO

>> Replace “fuel level sensor unit and fuel pump”. Refer to 

FL-5, "Exploded View"

.

7.

CHECK INTERMITTENT INCIDENT

Refer to 

GI-40, "Intermittent Incident"

.

>> INSPECTION END

Component Inspection

INFOID:0000000009947346

1.

CHECK FUEL TANK TEMPERATURE SENSOR

1.

Turn ignition switch OFF.

2.

Disconnect “fuel level sensor unit and fuel pump” harness connector.

3.

Remove fuel level sensor unit. Refer to 

FL-5, "Exploded View"

.

Fuel level sensor unit and fuel pump

Ground

Voltage

Connector

Terminal

B40

4

Ground

Approx. 5 V

Fuel level sensor unit and fuel pump

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

B40

5

M34

24

Existed

P0182, P0183 FTT SENSOR

EC-229

< DTC/CIRCUIT DIAGNOSIS >

[MR18DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

4.

Check resistance between “fuel level sensor unit and fuel pump” terminals by heating with hot water as
shown in the figure.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace “fuel level sensor unit and fuel pump”. Refer to 

FL-5, "Exploded View"

.

Terminals

Condition

Resistance

4 and 5

Temperature [

°

C (

°

F)]

20 (68)

2.3 - 2.7 k

50 (122)

0.79 - 0.90 k

 

 

 

 

 

 

 

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