Nissan Sentra. Manual - part 653

MWI-58

< DTC/CIRCUIT DIAGNOSIS >

FUEL LEVEL SENSOR SIGNAL CIRCUIT

FUEL LEVEL SENSOR SIGNAL CIRCUIT

Description

INFOID:0000000009758282

The fuel level sensor unit and fuel pump detects the approximate fuel level in the fuel tank and transmits the

fuel level signal to the combination meter.

Component Function Check

INFOID:0000000009758283

1.

COMBINATION METER INPUT SIGNAL

1. Select METER/M&A on CONSULT.

2. Using FUEL METER of DATA MONITOR, compare the value of DATA MONITOR with fuel gauge pointer

of combination meter.

Does the data monitor value approximately match the fuel gauge indication?

YES

>> Inspection End.

NO

>> Replace combination meter. Refer to 

MWI-77, "Removal and Installation"

.

Diagnosis Procedure

INFOID:0000000009758284

Regarding Wiring Diagram information, refer to 

MWI-28, "Wiring Diagram"

.

1.

CHECK FUEL LEVEL SENSOR CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect combination meter connector and fuel level sensor unit connector.

3. Check continuity between combination meter harness connector and fuel level sensor unit harness con-

nector.

4. Check continuity between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 2.

NO

>> Repair or replace harness or connector.

2.

CHECK FUEL LEVEL SENSOR GROUND CIRCUIT

1. Check continuity between fuel level sensor unit harness connector and combination meter harness con-

nector.

Fuel gauge pointer

Fuel tank volume [L]

(Approx.)

Full

47.2

3/4

38.4

1/2

26

1/4

13.9

Empty

0.0

Combination meter

Fuel level sensor unit

Continuity

Connector

Terminal

Connector

Terminal

M24

6

B48

2

Yes

Combination meter

Ground

Continuity

Connector

Terminal

M24

6

No

MWI

FUEL LEVEL SENSOR SIGNAL CIRCUIT

MWI-59

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

2. Check continuity between combination meter harness connector and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Repair or replace harness or connector.

3.

CHECK INSTALLATION CONDITION

Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any of the

internal components in the fuel tank.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> Install the fuel level sensor unit properly. Refer to  

FL-6, "Removal and Installation"

.

Component Inspection

INFOID:0000000009758285

1.

REMOVE FUEL LEVEL SENSOR UNIT

Remove the fuel level sensor unit. Refer to 

FL-6, "Removal and Installation"

.

>> GO TO 2.

2.

CHECK FUEL LEVEL SENSOR UNIT

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

*: When float rod is in contact with stopper.

Is inspection result OK?

YES

>> Inspection End.

NO

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

FL-6, "Removal and Installation"

.

Fuel level sensor unit

Combination meter

Continuity

Connector

Terminal

Connector

Terminal

B48

5

M24

24

Yes

Combination meter

Ground

Continuity

Connector

Terminal

M24

24

Yes

Terminals

Condition

Resistance (

Ω)

(Approx.)

Height [mm (in)]

Fuel level sensor unit

2

5

Full

*

 (2)

51

151.0 (5.9)

Empty

*

 (1)

278

13.8 (0.5)

LKIA0402E

MWI-60

< DTC/CIRCUIT DIAGNOSIS >

PARKING BRAKE SWITCH SIGNAL CIRCUIT

PARKING BRAKE SWITCH SIGNAL CIRCUIT

Component Function Check

INFOID:0000000009758286

1.

CHECK PARKING BRAKE SWITCH OPERATION

Check that brake warning lamp in combination meter turns ON/OFF when parking brake is actuated.
Is the inspection result normal?

YES

>> Inspection End.

NO

>> Proceed to diagnosis procedure. Refer to 

MWI-60, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000009758287

Regarding Wiring Diagram information, refer to 

MWI-28, "Wiring Diagram"

.

1.

CONNECTOR INSPECTION

1. Turn ignition switch OFF.

2. Disconnect combination meter and parking brake switch connectors.

3. Check connectors and terminals for deformation, disconnection, looseness or damage.
Is the inspection result normal?

YES

>> GO TO 2

NO

>> Repair or replace as necessary.

2.

CHECK PARKING BRAKE SWITCH

Check parking brake switch. Refer to 

MWI-61, "Component Inspection"

.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> Replace parking brake switch. Refer to 

PB-7, "Exploded View"

.

3.

CHECK PARKING BRAKE SWITCH SIGNAL

With CONSULT.

1. Connect combination meter connector and parking brake switch connectors.

2. Turn ignition switch ON.

3. In “DATA MONITOR” select “PARK BRAKE SW” and check parking brake switch signal.

Is the inspection result normal?

YES

>> Refer to 

MWI-45, "Work flow"

.

NO

>> GO TO 4.

4.

CHECK PARKING BRAKE SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect combination meter and parking brake switch connectors.

3. Check continuity between combination meter connector M24 terminal 10 and parking brake switch con-

nector M130 terminal 1.

4. Check continuity between combination meter connector and ground.

Condition

DATA MONITOR

Actuate parking brake

On

Release parking brake

Off

Combination meter

Parking brake switch

Continuity

Connector

Terminal

Connector

Terminal

M24

10

M130

1

Yes

MWI

PARKING BRAKE SWITCH SIGNAL CIRCUIT

MWI-61

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

Is the inspection result normal?

YES

>> Replace combination meter. Refer to 

MWI-77, "Removal and Installation"

. 

NO

>> Repair or replace malfunctioning components.

Component Inspection

INFOID:0000000009758288

1.

CHECK PARKING BRAKE SWITCH

1. Turn ignition switch OFF.

2. Disconnect parking brake switch connector.

3. Check continuity between parking brake switch terminal 1 and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace parking brake switch. Refer to 

PB-7, "Exploded View"

.

Combination meter

—

Continuity

Connector

Terminal

M24

10

Ground

No

Parking brake switch terminal

—

Condition

Continuity

1

Ground

Parking brake actuated

Yes

Parking brake released

No