Infiniti M45 (Y34). Manual - part 293

 

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Infiniti M45 (Y34). Manual - part 293

 

 

COMBINATION METERS

DI-17

C

D

E

F

G

H

I

J

L

M

A

B

DI

2. 

CHECK HARNESS CONNECTOR OUTPUT SIGNAL

1.

Disconnect fuel level sensor connector.

2.

Turn ignition switch ON.

3.

Check voltage between combination meter harness connector
M41 terminal 30 (R/Y) and ground.

OK or NG

OK

>> GO TO 3.

NG

>> Replace combination meter.

3. 

CHECK HARNESS FOR OPEN OR SHORT CIRCUIT

1.

Turn ignition switch OFF.

2.

Disconnect combination meter connector.

3.

Check continuity between combination meter harness connector
M41 terminal 30 (R/Y) and fuel level sensor unit harness con-
nector B51 terminal 5 (R/Y).

4.

Check continuity between combination meter harness connector
M41 terminal 30 (R/Y) and ground.

OK or NG

OK

>> GO TO 4.

NG

>> Repair harness or connector.

4. 

CHECK FUEL LEVEL SENSOR GROUND CIRCUIT

1.

Check continuity between combination meter harness connector
M41 terminal 31 (B/Y) and fuel level sensor unit harness con-
nector B51 terminal 6 (B).

2.

Check continuity between combination meter harness connector
M41 terminal 31 (B/Y) and ground.

OK or NG

OK

>> GO TO 5.

NG

>> Repair harness or connector.

5. 

CHECK FUEL LEVEL SENSOR UNIT

Check components. Refer to 

DI-19, "CHECK FUEL LEVEL SENSOR UNIT"

 .

OK or NG

OK

>> GO TO 6.

NG

>> Replace fuel level sensor unit. 

Approx. 5V

SKIA3424E

Continuity should exist.

Continuity should not exist.

SKIA3425E

Continuity should exist.

Continuity should not exist.

SKIA3427E

DI-18

COMBINATION METERS

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 combination meter.

NG

>> Install fuel level sensor unit properly.

Fuel Gauge Pointer Fluctuates·Indicator Wrong Value or Varies

AKS002I4

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 Preform the trouble

diagnosis.

Fuel Gauge Does Not Move to FULL Position

AKS002I5

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 EMPTY position?
YES or NO

YES

>> Check the components. Refer to 

DI-16, "FUEL LEVEL SENSOR UNIT"

 .

NO

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

COMBINATION METERS

DI-19

C

D

E

F

G

H

I

J

L

M

A

B

DI

Electrical Components Inspection

AKS002I9

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.

Removal and Installation of Combination Meter

AKS002IA

REMOVAL

1.

Remove cluster lid A. Refer to 

IP-10, "INSTRUMENT PANEL ASSEMBLY"

 .

2.

Remove screws (3) with power tool, and disconnect connectors.

3.

While pulling combination meter upper-side forward, pull it out.

CAUTION:

To prevent it from being damaged by interference with the
meter bracket, protect the meter with cloth.

INSTALLATION

Install in the reverse order of removal.

Terminal

Float position mm (in)

Resistance value

5

6

Full (3)

Approx. 82.7 (3.3)

Approx. 4.5 - 5.5

1/2 (2)

Approx. 200.3 (7.9)

Approx. 31.5 - 35.5

Empty (1)

Approx. 325.0 (12.8)

Approx. 80.0 - 83.0

SKIA3428E

PKIA1666E

PKIA1667E

DI-20

COMBINATION METERS

Disassembly and Assembly of Combination Meter

AKS002IB

DISASSEMBLY

1.

Disengage tabs (8) to separate meter cover.

2.

Disengage tabs (8) to separate upper housing.

3.

Disengage tabs (8) to separate front cover.

ASSEMBLY

Assemble in reverse order of disassembly.

1.

Front cover

2.

Upper housing

3.

Unified meter control unit assembly

4.

Meter cover

PKIA1668E

 

 

 

 

 

 

 

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