Infiniti F50. Manual - part 295

COMBINATION METERS

DI-23

C

D

E

F

G

H

I

J

L

M

A

B

DI

Inspection/Water Temperature Gauge

EKS00105

1. 

CHECK ECM SYSTEM

Preform the ECM self-diagnosis. Refer to 

EC-52, "Emission-related Diagnostic Information"

 .

OK or NG

OK

>> Replace unified meter control unit (sub).

NG

>> Perform “Diagnostic Procedure” for displayed DTC.

Inspection/Vehicle Speed Signal

EKS00106

1. 

CHECK VDC/TCS/ABS CONTROL UNIT SYSTEM

Preform VDC/TCS/ABS control unit self-diagnosis. Refer to 

BRC-26, "CONSULT-II Functions"

 .

OK or NG

OK

>> Replace unified meter control unit (sub).

NG

>> Check VDC/TCS/ABS control unit. 

Inspection/Fuel Level Sensor Unit

EKS00107

FUEL LEVEL SENSOR UNIT

The following symptoms do not indicate a malfunction.

●

Depending on vehicle posture or driving circumstance, the fuel level in the tank various, and the pointer
may fluctuate.

●

If the vehicle is fueled with the ignition switch ON, the pointer will move slowly.

LOW-FUEL WARNING LAMP

Depending on vehicle posture or driving circumstance, the fuel level in the tank varies, and the warning lamp
ON timing may be changed.

1. 

CHECK HARNESS CONNECTOR

1.

Turn the ignition switch OFF.

2.

Check combination meter, fuel level sensor unit and terminals (meter-side, and harness-side) for poor
connection and bend.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminals or connectors.

2. 

CHECK HARNESS CONNECTOR OUTPUT SIGNAL

1.

Turn the ignition switch ON.

2.

Check voltage between combination meter harness connector
M42 terminal 30 (R/L) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace unified meter control unit (sub).

Approx. 5V

SKIA4128E

DI-24

COMBINATION METERS

3. 

CHECK FUEL LEVEL SENSOR OPEN CIRCUIT

1.

Disconnect combination meter connector and fuel level sensor
unit connector.

2.

Check the following.

–

Continuity between combination meter harness connector M42
terminal 30 (R/L)and fuel level sensor unit harness connector
B239 terminal 5 (R/L).

–

Check for continuity between combination meter harness con-
nector M42 terminal 29 (B/Y) and the fuel level sensor unit har-
ness connector B239 terminal 6 (B).

OK or NG

OK

>> GO TO 4.

NG

>> Repair harnesses or connectors.

4. 

CHECK FUEL LEVEL SENSOR SHORT CIRCUIT

Check continuity between combination meter harness connector
M42 terminals 29 (B/Y), 30 (R/L) and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair harnesses or connectors.

5. 

CHECK FUEL LEVEL SENSOR UNIT

Check the components. Refer to 

DI-26, "CHECK FUEL LEVEL SENSOR UNIT"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Replace fuel level sensor unit. 

6. 

CHECK INSTALLATION CONDITION

Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any compo-
nents inside the arm.

OK or NG

OK

>> Replace unified meter control unit (sub).

NG

>> Install fuel level sensor unit properly.

Continuity should exist.

Continuity should exist.

SKIA0486E

Continuity should not exist.

SKIA3926E

COMBINATION METERS

DI-25

C

D

E

F

G

H

I

J

L

M

A

B

DI

Fuel Gauge Pointer Fluctuates, Indicator Wrong Value, Or Varies

EKS00108

1. 

CHECK FUEL GAUGE POINTER FOR FLUCTUATION

Does the indication value fluctuate during driving or before/after stop?
Does the indication value vary?

YES

>> The pointer fluctuation may be caused by fuel level change in the fuel tank.

NO

>> Ask the customer about the situation when the symptom occurs in detail, and perform the trouble

diagnosis.

Fuel Gauge Does Not Move to Full-Position

EKS00109

1. 

QUESTION 1

Does it take a long time for the pointer to move to Full-position?

YES or NO

YES

>> GO TO 2.

NO

>> GO TO 3.

2. 

QUESTION 2

Was the vehicle fueled with the ignition switch ON?

YES or NO

YES

>> Be sure to fuel the vehicle with the ignition switch OFF. Otherwise it will take a long time to move

to Full-position because of the characteristic of the fuel gauge.

NO

>> GO TO 3.

3. 

QUESTION 3

Is the floor or the vehicle inclined?

YES or NO

YES

>> It may not be filled fully.

NO

>> GO TO 4.

4. 

QUESTION 4

During driving, does the fuel gauge pointer move gradually toward E-position?
YES or NO

YES

>> Check the components. Refer to 

DI-26, "CHECK FUEL LEVEL SENSOR UNIT"

 .

NO

>> The float arm may interfere or bind with any of the components in the fuel tank.

Fuel Gauge Does Not Work

EKS0010A

1. 

CHECK HARNESS CONNECTOR

1.

Turn the ignition switch OFF.

2.

Check combination meter, fuel level sensor unit, and terminals (meter-side, module-side, lead-side, and
harness-side) for poor connection and bend.

OK or NG

OK

>> GO TO 2.

NG

>> Repair terminals or connectors.

2. 

CHECK INSTALLATION CONDITION

Check fuel level sensor unit installation (refer to 

FL-3, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND

FUEL PUMP ASSEMBLY"

 , and check whether the float arm interferes or binds with any components inside

the arm.

OK or NG

OK

>> Fuel level sensor unit is OK.

NG

>> Check fuel level sensor unit.Refer to 

DI-26, "CHECK FUEL LEVEL SENSOR UNIT"

 .

DI-26

COMBINATION METERS

Low-Fuel Warning Lamp Illuminate or Not Illuminate

EKS0010B

1. 

CHECK SELF-DIAGNOSIS

Perform combination meter self-diagnosis mode. Refer to 

DI-18, "Meter/Gauges Operation, Odo/Trip Meter, A/

T Indicator and ICC System Display"

 .

OK or NG

OK

>> Check fuel level sensor unit. Refer to 

DI-26, "CHECK FUEL LEVEL SENSOR UNIT"

 .

NG

>> Replace unified meter control unit (sub).

ICC System Display Does Not Illuminate

EKS003KU

1. 

ICC SYSTEM DISPLAY CHECK

Does all of ICC system display illuminate?

YES or NO

All of display does not illuminate>>GO TO 2.
Partially does not illuminate>>GO TO 2.
Segment is missing>>GO TO 3.

2. 

CHECK ICC SYSTEM

Perform ICC unit self-diagnosis. Refer to 

ACS-66, "SELF-DIAGNOSIS BY ICC SYSTEM DISPLAY WILL NOT

RUN."

 .

OK or NG

OK

>> GO TO 3.

NG

>> Check ICC system trouble diagnosis. Refer to 

ACS-66, "SELF-DIAGNOSIS BY ICC SYSTEM

DISPLAY WILL NOT RUN."

 .

3. 

CHECK COMBINATION METER

Perform combination meter self-diagnosis. Refer to 

DI-18, "Meter/Gauges Operation, Odo/Trip Meter, A/T

Indicator and ICC System Display"

 .

OK or NG

OK

>> ICC system display is OK.

NG

>> Replace unified meter control unit (sub) and ICC system display.

Electrical Components Inspection

EKS0010E

CHECK FUEL LEVEL SENSOR UNIT

●

For removal, Refer to 

FL-3, "FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY"

●

Check the resistance between terminals 5 and 6.

Measurement 

terminal

Float position

mm (in)

Resistance value (

Ω

)

5

6

Full (1)

Approx. 82.7 (3.3)

Approx. 4.5 – 5.5

1/2 (2)

Approx. 200.3 (7.9)

Approx. 31.5 – 35.5

Empty (3)

Approx. 325.0 (12.8)

Approx. 80.0 – 83.0

SKIA3428E