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
Ω
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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