Nissan Frontier D40. Instruction — part 857
MWI
FUEL LEVEL SENSOR SIGNAL CIRCUIT
MWI-33
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
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J
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B
A
O
P
Is the inspection result normal?
YES
>> GO TO 3
NO
>> Repair harness or connector.
3.
CHECK FUEL LEVEL SENSOR UNIT GROUND CIRCUIT
1.
Check continuity between combination meter harness connector
and fuel level sensor unit and fuel pump harness connector.
2.
Check continuity between fuel level sensor unit and fuel pump
harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 4
NO
>> Repair harness or connector.
4.
CHECK INSTALLATION CONDITION
Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any of the
internal components in the fuel tank.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Install the fuel level sensor unit properly.
Component Inspection
INFOID:0000000005275825
1.
REMOVE FUEL LEVEL SENSOR UNIT
Remove the fuel level sensor unit. Refer to
FL-10, "Removal and Installation"
>> GO TO 2
2.
CHECK FUEL LEVEL SENSOR UNIT AND FUEL PUMP
Terminals
Continuity
(+)
(-)
Connector
Terminal
Ground
C5
2
No
Terminals
Continuity
(+)
(-)
Connector
Terminal
Connector
Terminal
C5
5
M24
4
Yes
Terminals
Continuity
(+)
(-)
Connector
Terminal
Ground
C5
5
No
WKIA3289E
MWI-34
< COMPONENT DIAGNOSIS >
FUEL LEVEL SENSOR SIGNAL CIRCUIT
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-10, "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
OIL PRESSURE SWITCH SIGNAL CIRCUIT
MWI-35
< COMPONENT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
OIL PRESSURE SWITCH SIGNAL CIRCUIT
Description
INFOID:0000000005275826
Detects the engine oil pressure and transmits the oil pressure switch signal to the IPDM E/R.
Component Function Check
INFOID:0000000005275827
1.
COMBINATION METER INPUT SIGNAL
1.
Select “METER/M&A” on CONSULT-III.
2.
Monitor “OIL W/L” of “DATA MONITOR” while operating ignition switch.
>> Inspection End.
Diagnosis Procedure
INFOID:0000000005275828
Regarding Wiring Diagram information, refer to
.
1.
CHECK OIL PRESSURE SWITCH CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect IPDM E/R connector E122 and oil pressure switch
connector E208 (VQ40DE) or F4 (QR25DE).
3.
Check continuity between IPDM E/R harness connector E122
(A) terminal 42 and oil pressure switch harness connector E208
(VQ40DE) or F4 (QR25DE) (B) terminal 1.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000005275829
1.
CHECK OIL PRESSURE SWITCH
Check continuity between oil pressure switch and ground.
Is the inspection result normal?
YES
>> Inspection End.
NO
>> Replace the oil pressure switch.
OIL W/L
When ignition switch is in ON
position (Engine stopped)
: ON
When engine is running
: OFF
Continuity should exist.
WKIA5607E
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-36
< COMPONENT DIAGNOSIS >
COMPASS
COMPASS
Wiring Diagram
INFOID:0000000005275830
AWNWA0110GB
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