Infiniti QX56 (Z62). Manual — part 955
MWI-74
< DTC/CIRCUIT DIAGNOSIS >
A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL CIRCUIT
A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL CIRCUIT
Diagnosis Procedure
INFOID:0000000006221756
1.
CHECK A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK A/C AUTO AMP. CONNECTION RECOGNITION SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and A/C auto amp. connector.
3.
Check continuity between combination meter harness connector and A/C auto amp. harness connector.
4.
Check continuity between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Terminals
Voltage
(Approx.)
(+)
(
−
)
Combination meter
Ground
Connector
Terminal
M34
19
5 V
Combination meter
A/C auto amp.
Continuity
Connector
Terminal
Connector
Terminal
M34
19
M50
6
Existed
Combination meter
Ground
Continuity
Connector
Terminal
M34
19
Not existed
MWI
THE FUEL GAUGE INDICATOR DOES NOT OPERATE
MWI-75
< SYMPTOM DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
SYMPTOM DIAGNOSIS
THE FUEL GAUGE INDICATOR DOES NOT OPERATE
Description
INFOID:0000000006221757
Fuel gauge will not indicate from a certain position.
Diagnosis Procedure
INFOID:0000000006221758
1.
CHECK COMBINATION METER OUTPUT SIGNAL
1.
Connect CONSULT-III.
2.
Select the “Data Monitor” for the “METER/M&A” and compare the “FUEL METER” monitor value with the
fuel gauge reading on the combination meter. Refer to
MWI-69, "Component Function Check"
.
Does monitor value match fuel gauge reading?
YES
>> GO TO 2.
NO
>> Replace combination meter. Refer to
MWI-85, "Removal and Installation"
2.
CHECK FUEL LEVEL SENSOR SIGNAL CIRCUIT
Check the fuel level sensor signal circuit. Refer to
.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK FUEL LEVEL SENSOR UNIT
Perform a unit check for the fuel level sensor unit. Refer to
MWI-70, "Component Inspection"
.
Is the inspection result normal?
YES
>> GO TO 4.
NO
>> Replace fuel level sensor unit. Refer to
FL-5, "Removal and Installation"
.
4.
CHECK FLOAT INTERFERENCE
Check that the float arm interferes with or binds to other components in the fuel tank.
Is the inspection result normal?
YES
>> Replace combination meter. Refer to
MWI-85, "Removal and Installation"
NO
>> Repair or replace malfunctioning parts.
MWI-76
< SYMPTOM DIAGNOSIS >
THE TRIP RESET AND ILLUMINATION CONTROL SWITCH IS INOPERATIVE
THE TRIP RESET AND ILLUMINATION CONTROL SWITCH IS INOPERA-
TIVE
Description
INFOID:0000000006221759
If any of the following malfunctions is found for the trip reset and illumination control switch operation.
• All switches are inoperative
• The specified switch cannot be operated
Diagnosis Procedure
INFOID:0000000006221760
1.
CHECK TRIP RESET AND ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT
Check the trip reset and illumination control switch signal circuit. Refer to
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK TRIP RESET AND ILLUMINATION CONTROL SWITCH
Perform a unit check for the trip reset and illumination control switch. Refer to
.
Is the inspection result normal?
YES
>> Replace combination meter. Refer to
MWI-85, "Removal and Installation"
NG
>> Replace trip reset and illumination control switch. Refer to
MWI
THE TRIP COMPUTER SWITCH IS INOPERATIVE
MWI-77
< SYMPTOM DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
THE TRIP COMPUTER SWITCH IS INOPERATIVE
Description
INFOID:0000000006221761
If any of the following malfunctions is found for the trip computer switch operation.
• All switches are inoperative
• The specified switch cannot be operated
Diagnosis Procedure
INFOID:0000000006221762
1.
CHECK TRIP COMPUTER SWITCH SIGNAL CIRCUIT
Check the trip computer switch signal circuit. Refer to
.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Repair harness or connector.
2.
CHECK TRIP COMPUTER SWITCH
Perform a unit check for the trip computer switch. Refer to
MWI-68, "Component Inspection"
Is the inspection result normal?
YES
>> Replace combination meter. Refer to
MWI-85, "Removal and Installation"
NG
>> Replace trip computer switch. Refer to
MWI-87, "Removal and Installation"
.
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