Nissan Frontier D40. Manual - part 857

MWI

FUEL LEVEL SENSOR SIGNAL CIRCUIT

MWI-33

< COMPONENT DIAGNOSIS >

C

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E

F

G

H

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B

A

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P

Is the inspection result normal?

YES

>> GO TO 3

NO

>> Repair harness or connector.

3.

CHECK FUEL LEVEL SENSOR UNIT GROUND CIRCUIT

1.

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

2.

Check continuity between fuel level sensor unit and fuel pump
harness connector and ground.

Is the inspection result normal?

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:0000000005275825

1.

REMOVE FUEL LEVEL SENSOR UNIT

Remove the fuel level sensor unit. Refer to 

FL-10, "Removal and Installation"

. 

>> GO TO 2

2.

CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP

Terminals

Continuity

(+)

(-)

Connector

Terminal

Ground

C5

2

No

Terminals

Continuity

(+)

(-)

Connector

Terminal

Connector

Terminal

C5

5

M24

4

Yes

Terminals

Continuity

(+)

(-)

Connector

Terminal

Ground

C5

5

No

WKIA3289E

MWI-34

< COMPONENT DIAGNOSIS >

FUEL LEVEL SENSOR SIGNAL CIRCUIT

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-10, "Removal and Installation"

.

Terminal

Float position

mm (in)

Resistance value

(Approx.)

2

5

*1

Empty

10 (0.4)

81.5

Ω

*2

Full

211.1 (8.3)

5

Ω

LKIA0402E

MWI

OIL PRESSURE SWITCH SIGNAL CIRCUIT

MWI-35

< COMPONENT DIAGNOSIS >

C

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B

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OIL PRESSURE SWITCH  SIGNAL CIRCUIT

Description

INFOID:0000000005275826

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

Component Function Check

INFOID:0000000005275827

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:0000000005275828

Regarding Wiring Diagram information, refer to 

MWI-41, "Wiring Diagram"

.

1.

CHECK OIL PRESSURE SWITCH CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect IPDM E/R connector E122 and oil pressure switch
connector E208 (VQ40DE) or F4 (QR25DE).

3.

Check continuity between IPDM E/R harness connector E122
(A) terminal 42 and oil pressure switch harness connector E208
(VQ40DE) or F4 (QR25DE) (B) terminal 1.

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000005275829

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.

WKIA5607E

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-36

< COMPONENT DIAGNOSIS >

COMPASS

COMPASS

Wiring Diagram

INFOID:0000000005275830

AWNWA0110GB