Nissan Versa Note. Instruction — part 318

EC-254

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P0181 FTT SENSOR

2. Wait at least 10 seconds.

3. Check 1st trip DTC.

With GST

Follow the procedure “With CONSULT” above.
Is 1st trip DTC detected?

YES

>> Proceed to

EC-255, "Diagnosis Procedure"

.

NO

>> GO TO 6.

6.

PERFORM COMPONENT FUNCTION CHECK (FOR MALFUNCTION B)

Perform component function check. Refer to

EC-254, "Component Function Check"

.

NOTE:

Use the component function check to check the overall function of the FTT sensor circuit. During this check, a

1st trip DTC might not be confirmed.
Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Proceed to

EC-255, "Diagnosis Procedure"

.

7.

PRECONDITIONING

If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce-

dure before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

TESTING CONDITION:

• Before performing the following procedure, do not add fuel.

• Before performing the following procedure, check that fuel level is between 1/4 and 4/4.

• Before performing the following procedure, confirm that battery voltage is 11 V or more at idle.

>> GO TO 8.

8.

PERFORM DTC CONFIRMATION PROCEDURE B

1. Start engine and let it idle for 60 minutes.

2. Move the vehicle to a cool place.

NOTE:

Cool the vehicle in an environment of ambient air temperature between

−10°C (14°F) and 35°C (95°F).

3. Turn ignition switch OFF and soak the vehicle for 12 hours.

CAUTION:

Never turn ignition switch ON during soaking.

NOTE:

The vehicle must be cooled with the food open.

4. Start engine and let it idle for 5 minutes or more.

CAUTION:

Never turn ignition switch OFF during idling.

5. Check 1st trip DTC.
Is 1st trip DTC detected?

YES

>> Proceed to

EC-255, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Component Function Check

INFOID:0000000009020754

1.

CHECK FUEL TANK TEMPERATURE (FTT) 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-6, "Removal and Installation"

.

P0181 FTT SENSOR

EC-255

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

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

>> Check intermittent incident. Refer to

GI-41, "Intermittent

Incident"

.

NO

>> Proceed to

EC-255, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009020755

1.

INSPECTION START

Confirm the detected malfunction (A or B). Refer to

EC-253, "DTC Logic"

.

Which malfunction is detected?

A

>> GO TO 2.

B

>> GO TO 6.

2.

CHECK DTC WITH COMBINATION METER

Check DTC with combination meter. Refer to

MWI-15, "CONSULT Function"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Proceed to

MWI-21, "DTC Index"

3.

CHECK FUEL TANK TEMPERATURE (FTT) SENSOR POWER

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.

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> GO TO 4.

4.

CHECK FUEL TANK TEMPERATURE (FTT) SENSOR POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM 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 to power.
Is the inspection result normal?

YES

>> Perform the trouble diagnosis for power supply circuit.

NO

>> Repair or replace error-detected parts.

Fuel level sensor unit

and fuel pump

Condition

Resistance (k

Ω)

Terminal

4

5

Temperature [

°C (°F)]

20 (68)

2.3 – 2.7

50 (122)

0.79 – 0.90

JMBIA0167ZZ

Fuel level sensor unit and fuel pump

Ground

Voltage

(Approx.)

Connector

Terminal

B44

4

Ground

5 V

Fuel level sensor unit and

fuel pump

ECM

Continuity

Connector

Terminal

Connector

Terminal

B44

4

F11

42

Existed

EC-256

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

P0181 FTT SENSOR

5.

CHECK FTT SENSOR GROUND CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect ECM 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 power.
Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace error-detected parts.

6.

CHECK FUEL TANK TEMPERATURE (FTT) SENSOR

Check the FTT sensor. Refer to

EC-256, "Component Inspection"

.

Is the inspection result normal?

YES

>> Check intermittent incident. Refer to

GI-41, "Intermittent Incident"

.

NO

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

FL-6, "Removal and Installation"

.

Component Inspection

INFOID:0000000009020756

1.

CHECK FUEL TANK TEMPERATURE (FTT) 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-6, "Removal and Installation"

.

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-6, "Removal and Installation"

.

Fuel level sensor unit and

fuel pump

ECM

Continuity

Connector

Terminal

Connector

Terminal

B44

5

F11

51

Existed

Fuel level sensor unit

and fuel pump

Condition

Resistance (k

Ω)

Terminal

4

5

Temperature [

°C (°F)]

20 (68)

2.3 – 2.7

50 (122)

0.79 – 0.90

JMBIA0167ZZ

P0182, P0183 FTT SENSOR

EC-257

< DTC/CIRCUIT DIAGNOSIS >

[HR16DE]

C

D

E

F

G

H

I

J

K

L

M

A

EC

N

P

O

P0182, P0183 FTT SENSOR

DTC Logic

INFOID:0000000009020757

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.

PRECONDITIONING

If DTC Confirmation Procedure has been previously conducted, always perform the following procedure

before conducting the next test.

1. Turn ignition switch OFF and wait at least 10 seconds.

2. Turn ignition switch ON.

3. Turn ignition switch OFF and wait at least 10 seconds.

>> 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

>> Proceed to

EC-257, "Diagnosis Procedure"

.

NO

>> INSPECTION END

Diagnosis Procedure

INFOID:0000000009020758

1.

CHECK DTC WITH COMBINATION METER

Refer to

MWI-15, "CONSULT Function"

.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Proceed to

MWI-21, "DTC Index"

2.

CHECK FUEL TANK TEMPERATURE (FTT) SENSOR POWER SUPPLY

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.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

3.

CHECK FUEL TANK TEMPERATURE (FTT) SENSOR POWER SUPPLY CIRCUIT

DTC No.

CONSULT screen terms

(Trouble diagnosis content)

DTC detecting condition

Possible cause

P0182

FTT SEN/CIRCUIT
(Fuel tank temperature sen-
sor circuit low input)

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

• Harness or connectors

(The FTT sensor circuit is open or
shorted.)

• Fuel tank temperature sensor
• Combination meter

P0183

FTT SEN/CIRCUIT
(Fuel tank temperature sen-
sor circuit high input)

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

Fuel level sensor unit and fuel

pump

Ground

Voltage

(Approx.)

Connector

Terminal

B44

4

Ground

5 V