Infiniti QX56 (Z62). Manual — part 953
MWI-66
< DTC/CIRCUIT DIAGNOSIS >
TRIP RESET AND ILLUMINATION CONTROL SWITCH SIGNAL CIRCUIT
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Component Inspection
INFOID:0000000006221745
1.
CHECK TRIP RESET AND ILLUMINATION CONTROL SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect trip reset and illumination control switch connector.
3.
Check trip reset and illumination control switch.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace trip reset and illumination control switch. Refer to
MWI-86, "Removal and Installation"
Terminals
Condition
Continuity
Trip reset and illumina-
tion control switch
5
6
When trip reset switch is pressed
Existed
Other than the above
Not existed
3
When illumination control switch (+) is pressed
Existed
Other than the above
Not existed
4
When illumination control switch (
−
) is pressed
Existed
Other than the above
Not existed
MWI
TRIP COMPUTER SWITCH SIGNAL CIRCUIT
MWI-67
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
TRIP COMPUTER SWITCH SIGNAL CIRCUIT
Diagnosis Procedure
INFOID:0000000006221746
1.
CHECK COMBINATION METER INPUT SIGNAL
1.
Turn ignition switch ON.
2.
Measure voltage between the following terminals of the combination meter.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK TRIP COMPUTER SWITCH SIGNAL CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and trip computer switch connector.
3.
Check continuity between combination meter harness connector and trip computer switch harness con-
nector.
4.
Check continuity between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Repair harness or connector.
3.
CHECK TRIP COMPUTER SWITCH GROUND CIRCUIT
Check continuity between trip computer switch connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
(+)
(
−
)
Condition
Voltage
(Approx.)
Combination meter
Ground
Connector
Terminals
M34
11
When enter switch is pressed
0 V
Other than the above
5 V
12
When select switch is pressed
0 V
Other than the above
5 V
Terminals
Continuity
Combination meter
Trip computer switch
Connector
Terminal
Connector
Terminal
M34
11
M84
3
Existed
12
4
Combination meter
Ground
Continuity
Connector
Terminal
M34
11
Not existed
12
Trip computer switch
Ground
Continuity
Connector
Terminal
M84
6
Existed
MWI-68
< DTC/CIRCUIT DIAGNOSIS >
TRIP COMPUTER SWITCH SIGNAL CIRCUIT
Component Inspection
INFOID:0000000006221747
1.
CHECK TRIP COMPUTER SWITCH
1.
Turn ignition switch OFF.
2.
Disconnect trip computer switch connector.
3.
Check trip computer switch.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Replace trip computer switch. Refer to
MWI-87, "Removal and Installation"
.
Terminals
Condition
Continuity
Trip computer switch
3
6
When enter switch is pressed
Existed
Other than the above
Not existed
4
When select switch is pressed
Existed
Other than the above
Not existed
MWI
FUEL LEVEL SENSOR SIGNAL CIRCUIT
MWI-69
< DTC/CIRCUIT DIAGNOSIS >
C
D
E
F
G
H
I
J
K
L
M
B
A
O
P
FUEL LEVEL SENSOR SIGNAL CIRCUIT
Component Function Check
INFOID:0000000006221748
1.
CHECK COMBINATION METER OUTPUT SIGNAL
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.
Does monitor value match fuel gauge reading?
YES
>> INSPECTION END
NO
>> Replace combination meter. Refer to
MWI-85, "Removal and Installation"
Diagnosis Procedure
INFOID:0000000006221749
1.
CHECK COMBINATION METER INPUT SIGNAL
1.
Turn ignition switch ON.
2.
Check voltage between combination meter harness connector and ground.
Does it match fuel gauge reading?
YES
>> GO TO 2.
NO
>> Replace the combination meter. Refer to
MWI-85, "Removal and Installation"
.
2.
CHECK FUEL LEVEL SENSOR CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector and fuel level sensor unit connector.
3.
Check continuity between combination meter harness connector and fuel level sensor unit harness con-
nector.
4.
Check continuity between combination meter harness connector and ground.
Fuel gauge indication position
Reference value of data monitor [L]
1
Approx. 101.8
3/4
Approx. 77.3
1/2
Approx. 52.3
1/4
Approx. 27.3
0
Approx. 2.3
Terminals
Voltage
(Approx.)
(+)
(
−
)
Combination meter
Ground
Connector
Terminal
M34
34
JSNIA3013ZZ
Combination meter
Fuel level sensor unit
Continuity
Connector
Terminal
Connector
Terminal
M34
34
C5
2
Existed
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