Nissan Qashqai J11. Manual - part 2033

MWI-68

< DTC/CIRCUIT DIAGNOSIS >

FUEL LEVEL SENSOR SIGNAL CIRCUIT

FUEL LEVEL SENSOR SIGNAL CIRCUIT

Component Function Check

INFOID:0000000010329986

1.

PERFORM COMPONENT FUNCTION CHECK (1)

1.

Turn ignition switch OFF.

2.

Disconnect fuel level sensor unit and fuel pump (fuel level sensor) connector.

3.

Connect variable resistor between harness connector terminals located on the vehicle side of the fuel
level sensor unit and fuel pump (fuel level sensor). 

*1: with gasoline engine

*2: with diesel engine

4.

Set variable resistor according to the resistance value shown in the following table and turn ignition switch
ON.

*: Reference resistance values used when the combination meter judges the indication position of the fuel
gauge.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Refer to 

MWI-68, "Diagnosis Procedure"

.

2.

PERFORM COMPONENT FUNCTION CHECK (2)

Check the fuel level sensor unit and fuel pump (fuel level sensor) and/or fuel level sensor unit (sub). Refer to

MWI-70, "Component Inspection"

.

Is the inspection result normal?

YES

>> INSPECTION END

NO

>> Replace the fuel level sensor unit and fuel pump (fuel level sensor) and/or fuel level sensor unit

(sub). Refer to 

FL-7, "Removal and Installation"

 (HRA2DDT models), 

FL-32, "Removal and Instal-

lation"

 (MR20DD models), 

FL-48, "Removal and Installation"

 (K9K models), 

FL-61, "2WD :

Removal and Installation"

 (2WD with R9M models), 

FL-19, "Removal and Installation"

(MR16DDT) or 

FL-65, "4WD : Removal and Installation"

 (4WD with R9M models).

Diagnosis Procedure

INFOID:0000000010329987

FOR DIESEL ENGINE MODELS

1.

CHECK FUEL PUMP CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and fuel pump control module connector.

Fuel level sensor unit and fuel pump (fuel level sensor)

Connector

Terminals

B72

*1

2

5

B94

*2

5

6

Resistance (

Ω

)

*

(Approx.)

Fuel gauge indication position

(Approx.)

93

Full

140

3/4

186

1/2

232

1/4

255

1/8

243,5

TURN OFF

255

TURN ON

280.0

Empty

MWI

FUEL LEVEL SENSOR SIGNAL CIRCUIT

MWI-69

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

3.

Check continuity between combination meter harness connector and fuel pump control module harness
connector.

4.

Check continuity between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK FUEL PUMP CONTROL NMODULE GROUND CIRCUIT

Check continuity between fuel pump control module harness connector and combination meter harness con-
nector.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair harness or connector.

3.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (FUEL LEVEL SENSOR) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect  fuel level sensor unit and fuel pump (fuel level sensor) connector and fuel pump controle
module connector.

3.

Check continuity between fuel level sensor unit and fuel pump (fuel level sensor) harness connector and
fuel pump control module harness connector.

4.

Check continuity between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair harness or connector.

4.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (FUEL LEVEL SENSOR) GROUND CIRCUIT

Check continuity between fuel level sensor unit and fuel pump (fuel level sensor) connector connector and fuel
pump control module harness connector.

Combination meter

Fuel pump controle module

Continuity

Connector

Terminal

Connector

Terminal

M52

51

B77

11

Existed

Combination meter

Ground

Continuity

Connector

Terminal

M52

51

Not existed

Fuel pump control module

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

B77

12

M52

44

Existed

Fuel level sensor unit and fuel 

pump (fuel level sensor)

Fuel pump control module

Continuity

Connector

Terminal

Connector

Terminal

B94

5

B77

2

Existed

Fuel level sensor unit and fuel 

pump (fuel level sensor)t

Ground

Continuity

Connector

Terminal

B94

5

Not existed

MWI-70

< DTC/CIRCUIT DIAGNOSIS >

FUEL LEVEL SENSOR SIGNAL CIRCUIT

Is the inspection result normal?

YES

>> Replace the fuel level sensor unit and fuel pump (fuel level sensor). Refer to 

FL-32, "Removal and

Installation"

 (MR20DD), 

FL-48, "Removal and Installation"

 (K9K engine models) or 

FL-61, "2WD :

Removal and Installation"

 (2WD with R9M engine models), 

FL-19, "Removal and Installation"

(MR16DDT) or 

FL-65, "4WD : Removal and Installation"

 (4WD with R9M engine models)

NO

>> Repair harness or connector.

FOR GASOLINE ENGINE MODELS

1.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (FUEL LEVEL SENSOR) CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector and fuel level sensor unit and fuel pump (fuel level sensor) con-
nector.

3.

Check continuity between combination meter harness connector and fuel level sensor unit and fuel pump
(fuel level sensor) harness connector.

4.

Check continuity between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair harness or connector.

2.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (FUEL LEVEL SENSOR) GROUND CIRCUIT

Check continuity between fuel level sensor unit and fuel pump (fuel level sensor) harness connector and com-
bination meter harness connector.

Is the inspection result normal?

YES

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

FL-7, "Removal and

Installation"

.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000010329988

2WD MODELS 

1.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (FUEL LEVEL SENSOR)

1.

Remove the fuel level sensor unit and fuel pump (fuel level sensor).

-

 Refer to 

FL-10, "Inspection"

 (HRA2DDT engine models)

Fuel pump controle module

Fuel level sensor unit and fuel 

pump (fuel level sensor)

Continuity

Connector

Terminal

Connector

Terminal

B77

1

B94

6

Existed

Combination meter

Fuel level sensor unit and fuel 

pump (fuel level sensor) 

Continuity

Connector

Terminal

Connector

Terminal

M52

51

B72

2

Existed

Combination meter

Ground

Continuity

Connector

Terminal

M52

51

Not existed

Fuel level sensor unit and fuel 

pump (fuel level sensor)

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

B72

5

M52

44

Existed

MWI

FUEL LEVEL SENSOR SIGNAL CIRCUIT

MWI-71

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

-

 Refer to 

FL-51, "Inspection"

 (K9K engine models)

-

 , Refer to 

FL-64, "2WD : Inspection"

 (R9M engine models)

-

 Refer to 

FL-38, "Inspection"

 (MR20DD engine models)

-

 Refer to 

FL-22, "Inspection"

 (MR16DDT engine models)

2.

Check the resistance between fuel level sensor unit and fuel pump (fuel level sensor).

*: When float rod is contact with stopper.

Is inspection result OK?

YES

>> INSPECTION END

NO

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

FL-7, "Removal and

Installation"

 (HRA2DDT engine models) or 

FL-48, "Removal and Installation"

 (K9K engine mod-

els) or 

FL-61, "2WD : Removal and Installation"

 (R9M engine models), 

FL-19, "Removal and

Installation"

 (MR16DDT engine models) or 

FL-32, "Removal and Installation"

 (MR20DD engine

models).

4WD MODELS

1.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP (FUEL LEVEL SENSOR)

1.

Remove the fuel level sensor unit and fuel pump (fuel level sensor). Refer to 

FL-71, "4WD : Inspection"

.

2.

Check the resistance between fuel level sensor unit and fuel pump (fuel level sensor).

*: When float rod is contact with stopper.

Is inspection result OK?

YES

>> INSPECTION END.

NO

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

FL-65, "4WD : Removal

and Installation"

.

Fuel level sensor unit and fuel pump 

(fuel level sensor) connector

Terminals

Condition

Resistance (

Ω

)

(Approx.)

Height [mm (in)]

B72 (HRA2DDT engine models)

2

5

Full

*

5

178.4 (7.02)

Empty

*

81.5

36.2 (1.425)

B94 (R9M and K9K engine models)

5

6

Full

*

5

178.4 (7.02)

Empty

*

81.5

36.2 (1.425)

Terminals

Condition

Resistance (

Ω

)

(Approx.)

Height [mm (in)]

Fuel level sensor unit 

and fuel pump (fuel 

level sensor)

5

6

Full

*

93

186.3 (7.33)

Empty

*

280

36.3 (1.429)