Nissan Xterra. Manual - part 512

MWI

FUEL LEVEL SENSOR SIGNAL CIRCUIT

MWI-35

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

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-11, "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-36

< DTC/CIRCUIT DIAGNOSIS >

OIL PRESSURE SWITCH SIGNAL CIRCUIT

OIL PRESSURE SWITCH  SIGNAL CIRCUIT

Description

INFOID:0000000009483212

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

Component Function Check

INFOID:0000000009483213

1.

COMBINATION METER INPUT SIGNAL

1. Select “METER/M&A” on CONSULT.

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

>> Inspection End.

Diagnosis Procedure

INFOID:0000000009483214

Regarding Wiring Diagram information, refer to 

MWI-61, "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.

3. Check continuity between IPDM E/R harness connector E122 terminal 42 and oil pressure switch harness

connector E208 terminal 1.

4. Check continuity between IPDM E/R harness connector E122 terminal 42 and ground.

Are the inspection results normal?

YES

>> Inspection End.

NO

>> Repair harness or connector.

Component Inspection

INFOID:0000000009483215

1.

CHECK OIL PRESSURE SWITCH

Check continuity between oil pressure switch and ground.

Is the inspection result normal?

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

: ON

When engine is running

: OFF

Continuity should exist.

Continuity should not exist.

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

OIL PRESSURE SWITCH SIGNAL CIRCUIT

MWI-37

< DTC/CIRCUIT DIAGNOSIS >

C

D

E

F

G

H

I

J

K

L

M

B

A

O

P

YES

>> Inspection End.

NO

>> Replace the oil pressure switch.

MWI-38

< ECU DIAGNOSIS INFORMATION >

COMBINATION METER

ECU DIAGNOSIS INFORMATION

COMBINATION METER

Reference Value

INFOID:0000000009483216

TERMINAL LAYOUT

PHYSICAL VALUES

LKIA0698E

Termi-

nal

Wire 

color

Item

Condition

Reference value (V)

(Approx.)

Ignition 

switch

Operation or condition

2

P

Generator

ON

Generator voltage low

0

Generator voltage normal

Battery voltage

3

R/Y

Battery power supply

—

—

Battery voltage

4

B/Y

Fuel level sensor ground

ON

—

0

6

SB

Vehicle speed signal out-
put (8-pulse)

ON

Speedometer operated
[When vehicle speed is ap-
prox. 40 km/h (25 MPH)]

NOTE:
Maximum voltage may be 12V due to spec-
ifications (connected units).

7

G

PNP signal

ON

Selector lever: P or N (A/
T), Neutral (M/T)

0

Except above

Battery voltage

9

BR

Fuel level sensor signal

—

—

Refer to 

MWI-12, "FUEL GAUGE : System 

Description"

.

11

P

CAN-L

—

—

—

12

L

CAN-H

—

—

—

13

GR

Ground

—

—

0

16

W/G

Ignition switch ON or 
START

ON

—

Battery voltage

17

B

Starter relay

ON

Selector lever: P or N

Battery voltage

Except above

0

22

BR

Illumination control 
switch

—

—

Refer to 

INL-9, "System Description"

.

23

B

Ground

—

—

0

24

V

Seat belt buckle switch 
LH

ON

Unfastened (ON)

0

Fastened (OFF)

Battery voltage

PKIC0643E