Nissan Altima HL32 Hybrid. Manual - part 814

MWI

FUEL LEVEL SENSOR SIGNAL CIRCUIT

MWI-43

< COMPONENT DIAGNOSIS >

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FUEL LEVEL SENSOR SIGNAL CIRCUIT

Description

INFOID:0000000004219285

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:0000000004219286

1.

COMBINATION METER INPUT SIGNAL

1. Select “METER/M&A” on CONSULT-III.

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-135, "Removal and Installation"

.

Diagnosis Procedure

INFOID:0000000004219287

1.

CHECK HARNESS CONNECTOR

1. Turn ignition switch OFF.

2. Check combination meter and fuel level sensor unit terminals (meter-side and harness-side) for poor con-

nection.

Is connection OK?

YES

>> GO TO 2

NO

>> Repair or replace terminals or connectors.

2.

CHECK FUEL LEVEL SENSOR UNIT CIRCUIT

1. Disconnect combination meter connector and fuel level sensor

unit connector.

2. Check continuity between combination meter harness connector

(A) and fuel level sensor unit and fuel pump harness connector

(B).

3. Check continuity between combination meter harness connector

(A) and ground.

Do test results match charts?

YES

>> GO TO 3

NO

>> Repair harness or connector.

Fuel gauge pointer

Reference value of data monitor [lit.]

Full

Approx. 68

3/4

Approx. 56

1/2

Approx. 38

1/4

Approx. 22

Empty

Approx. 4

A

B

Continuity

Connector

Terminal

Connector

Terminal

M24

34

B42

2

Yes

A

Ground

Continuity

Connector

Terminal

M24

34

No

AWNIA0092ZZ

MWI-44

< COMPONENT DIAGNOSIS >

FUEL LEVEL SENSOR SIGNAL CIRCUIT

3.

CHECK FUEL LEVEL SENSOR UNIT GROUND CIRCUIT

1. Check continuity between combination meter harness connector

(A) and fuel level sensor unit and fuel pump harness connector

(B).

2. Check continuity between combination meter harness connector

(A) and ground.

Do test results match charts?

YES

>> GO TO 4

NO

>> Repair harness or connector.

4.

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.

Component Inspection

INFOID:0000000004219288

1.

REMOVE FUEL LEVEL SENSOR UNIT

Remove the fuel level sensor unit. Refer to 

FL-7, "Removal and Installation"

. 

>> GO TO 2

2.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP

Check the resistance between terminals 2 and 5.

1* and 2*: When float arm is in contact with stopper.

Is inspection result normal?

YES

>> Inspection End.

NO

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

FL-7, "Removal and Installation"

.

A

B

Continuity

Connector

Terminal

Connector

Terminal

M24

24

B42

5

Yes

A

Ground

Continuity

Connector

Terminal

M24

24

No

AWNIA0015ZZ

Terminal

Float position

mm (in)

Resistance value

(Approx.)

2

5

1*

Full (1)

155.4 (6.1)

6

Ω

2*

Empty (2)

22.9 (0.9)

80

Ω

WKIA5456E

MWI

OIL PRESSURE SWITCH SIGNAL CIRCUIT

MWI-45

< COMPONENT DIAGNOSIS >

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OIL PRESSURE SWITCH  SIGNAL CIRCUIT

Description

INFOID:0000000004219289

Detects the engine oil pressure and transmits the oil pressure switch signal to the IPDM E/R.

Component Function Check

INFOID:0000000004219290

1.

COMBINATION METER INPUT SIGNAL

1. Select “METER/M&A” on CONSULT-III.

2. Monitor “OIL W/L” of “DATA MONITOR” while operating ignition switch.

>> Inspection End.

Diagnosis Procedure

INFOID:0000000004219291

1.

CHECK OIL PRESSURE SWITCH CIRCUIT

1. Turn ignition switch OFF.

2. Disconnect IPDM E/R connector F10 and oil pressure switch

connector F41.

3. Check continuity between IPDM E/R harness connector F10 (A)

terminal 75 and oil pressure switch harness connector F41 (B)

terminal 1.

Does continuity exist?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000004219292

1.

CHECK OIL PRESSURE SWITCH

Check continuity between oil pressure switch and ground.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace the oil pressure switch.

OIL W/L
When ignition switch is in ON 
position (Engine stopped)

: ON

When engine is running

: OFF

Continuity should exist.

AWNIA0016ZZ

Condition

Oil pressure [kPa (kg/cm

2

, psi)]

Continuity

Engine stopped

Less than 29 (0.3, 4)

Yes

Engine running

More than 29 (0.3, 4) 

No

ELF0044D

MWI-46

< COMPONENT DIAGNOSIS >

PARKING BRAKE SWITCH SIGNAL CIRCUIT

PARKING BRAKE SWITCH SIGNAL CIRCUIT

Description

INFOID:0000000004219293

Transmits the parking brake switch signal to the combination meter.

Component Function Check

INFOID:0000000004219294

1.

COMBINATION METER INPUT SIGNAL

1. Select “METER/M&A” on CONSULT-III.

2. Monitor “PKB SW” of “DATA MONITOR” while applying and releasing the parking brake.

>> Inspection End.

Diagnosis Procedure

INFOID:0000000004219295

1.

CHECK PARKING BRAKE SWITCH CIRCUIT

1. Disconnect combination meter connector and parking brake

switch connector. 

2. Check continuity between combination meter harness connector

M24 (A) terminal 26 and parking brake switch harness connec-

tor M73 (B) terminal 1.

3. Check continuity between combination meter harness connector

M24 (A) terminal 26 and ground.

Do test results match specifications?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000004219296

1.

CHECK PARKING BRAKE SWITCH

Check continuity between parking brake switch terminal 1 and switch

case ground.

Do test results match chart?

YES

>> Inspection End.

NO

>> Replace parking brake switch.

PKB SW
Parking brake applied

: ON

Parking brake released

: OFF

26 - 1

: Continuity should exist.

26 - Ground

: Continuity should not exist.

AWNIA0017ZZ

Component

Terminal

Condition

Continuity

Parking brake switch

1

Parking brake applied

Yes

Parking brake released

No

AWNIA0018ZZ