Infiniti QX56 (Z62). Manual — part 954
MWI-70
< DTC/CIRCUIT DIAGNOSIS >
FUEL LEVEL SENSOR SIGNAL CIRCUIT
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK FUEL LEVEL SENSOR GROUND CIRCUIT
Check continuity between fuel level sensor unit harness connector and combination meter harness connector.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000006221750
1.
REMOVE FUEL LEVEL SENSOR UNIT
Remove the fuel level sensor unit. Refer to
FL-5, "Removal and Installation"
.
>> GO TO 2.
2.
CHECK FUEL LEVEL SENSOR UNIT
Check the resistance between fuel level sensor unit and fuel pump.
*: When float rod is contact with stopper.
Is inspection result OK?
YES
>> INSPECTION END
NO
>> Replace fuel level sensor unit and fuel pump. Refer to
FL-5, "Removal and Installation"
.
Combination meter
Ground
Continuity
Connector
Terminal
M34
34
Not existed
Fuel level sensor unit
Combination meter
Continuity
Connector
Terminal
Connector
Terminal
C5
5
M34
24
Existed
Terminals
Condition
Resistance (
Ω
)
(Approx.)
Height [mm (in)]
Fuel level sensor unit
2
5
Full
*
(A)
46.0
282 (11.10)
Empty
*
(B)
278.0
29 (1.14)
JSNIA3018ZZ
MWI
OIL PRESSURE SWITCH SIGNAL CIRCUIT
MWI-71
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
OIL PRESSURE SWITCH SIGNAL CIRCUIT
Component Function Check
INFOID:0000000006221751
1.
CHECK COMBINATION METER INPUT SIGNAL
Select the “Data Monitor” for the “METER/M&A” and check the “OIL W/L” monitor value.
>> INSPECTION END
Diagnosis Procedure
INFOID:0000000006221752
1.
CHECK OIL PRESSURE SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector and oil pressure switch connector.
3.
Check continuity between IPDM E/R harness connector and oil pressure switch harness connector.
4.
Check continuity between IPDM E/R harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000006221753
1.
CHECK OIL PRESSURE SWITCH
Check continuity between oil pressure switch and ground.
Is the inspection result normal?
YES
>> INSPECTION END
“OIL W/L”
Ignition switch ON
: On
Engine running
: Off
Terminals
Continuity
(+)
(
−
)
IPDM E/R
Oil pressure switch
Connector
Terminal
Connector
Terminal
E13
24
E206
1
Existed
Terminals
Continuity
(+)
(
−
)
IPDM E/R
Ground
Connector
Terminal
E13
24
Not existed
Condition
Continuity
Engine stopped
Existed
Engine running
Not existed
ELF0044D
MWI-72
< DTC/CIRCUIT DIAGNOSIS >
OIL PRESSURE SWITCH SIGNAL CIRCUIT
NO
>> Replace oil pressure switch. Refer to
EM-58, "Removal and Installation"
.
MWI
WASHER LEVEL SWITCH SIGNAL CIRCUIT
MWI-73
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
WASHER LEVEL SWITCH SIGNAL CIRCUIT
Diagnosis Procedure
INFOID:0000000006221754
1.
CHECK WASHER LEVEL SWITCH SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and washer level switch connector.
3.
Check continuity between combination meter harness connector and washer level switch harness con-
nector.
4.
Check continuity between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK WASHER LEVEL SWITCH GROUND CIRCUIT
Check continuity between washer level switch connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000006221755
1.
CHECK WASHER LEVEL SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect washer level switch connector.
3.
Check washer level switch.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace washer level switch. Refer to
WW-62, "Removal and Installation"
.
Terminals
Continuity
Combination meter
Washer level switch
Connector
Terminal
Connector
Terminal
M34
29
E54
1
Existed
Terminals
Continuity
Combination meter
Ground
Connector
Terminal
M34
29
Not existed
Terminals
Continuity
Washer level switch
Ground
Connector
Terminal
E54
2
Existed
Terminals
Condition
Continuity
Washer level switch
1
2
Washer level switch ON
Existed
Washer level switch OFF
Not existed
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