Infiniti QX56 (Z62). Manual — part 1361
WCS
DIAGNOSIS AND REPAIR WORKFLOW
WCS-37
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
INFOID:0000000006222526
OVERALL SEQUENCE
DETAILED FLOW
1.
OBTAIN INFORMATION ABOUT SYMPTOM
Interview the customer to obtain as much information as possible about the conditions and environment under
which the malfunction occurred.
>> GO TO 2.
2.
CHECK SYMPTOM
• Check the symptom based on the information obtained from the customer.
• Check if any other malfunctions are present.
>> GO TO 3.
3.
CHECK CONSULT-III SELF-DIAGNOSIS RESULTS
Connect CONSULT-III and perform self-diagnosis. Refer to
.
JSNIA0733GB
WCS-38
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORKFLOW
Are self-diagnosis results normal?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
NARROW DOWN MALFUNCTIONING PARTS BY SYMPTOM DIAGNOSIS
Perform symptom diagnosis and narrow down the malfunctioning parts.
>> GO TO 5.
5.
REPAIR OR REPLACE MALFUNCTIONING PARTS
Repair or replace malfunctioning parts.
NOTE:
If DTC is displayed, erase DTC after repairing or replacing malfunctioning parts.
>> GO TO 6.
6.
FINAL CHECK
Check that the warning buzzer in the combination meter operates normally.
Does it operate normally?
YES
>> INSPECTION END
NO
>> GO TO 1.
WCS
POWER SUPPLY AND GROUND CIRCUIT
WCS-39
< DTC/CIRCUIT DIAGNOSIS >
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DTC/CIRCUIT DIAGNOSIS
POWER SUPPLY AND GROUND CIRCUIT
COMBINATION METER
COMBINATION METER : Diagnosis Procedure
INFOID:0000000006222743
1.
CHECK FUSE
Check for blown fuses.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Be sure to eliminate cause of malfunction before installing new fuse.
2.
CHECK POWER SUPPLY CIRCUIT
Check voltage between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> GO TO 3.
NO
>> Check harness between combination meter and fuse.
3.
CHECK GROUND CIRCUIT
1.
Turn ignition switch OFF.
2.
Disconnect combination meter connector.
3.
Check continuity between combination meter harness connector and ground.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair harness or connector.
Power source
Fuse No.
Battery
11
Ignition switch ON or START
3
Terminals
Ignition switch po-
sition
Voltage
(Approx.)
(+)
(
−
)
Combination meter
Ground
Connector
Terminal
M34
1
OFF
Battery voltage
2
ON
Combination meter
Ground
Continuity
Connector
Terminal
M34
3
Existed
23
WCS-40
< DTC/CIRCUIT DIAGNOSIS >
METER BUZZER CIRCUIT
METER BUZZER CIRCUIT
Component Function Check
INFOID:0000000006222528
1.
CHECK OPERATION OF METER BUZZER
1.
Select “BUZZER” of “BCM” on CONSULT-III.
2.
Perform “LIGHT WARN ALM” of “Active Test”.
Does meter buzzer beep?
YES
>> INSPECTION END
NO
>> GO TO 2.
2.
CHECK COMBINATION METER INPUT SIGNAL
Select the “Data Monitor” for the “METER/M&A” and check the “BUZZER” monitor value.
Is the inspection result normal?
YES
>> Replace combination meter.
NO
>> Replace BCM. Refer to
BCS-81, "Removal and Installation"
Diagnosis Procedure
INFOID:0000000006222529
1.
CHECK POWER SUPPLY OF COMBINATION METER
Check power supply of combination meter. Refer to
MWI-64, "COMBINATION METER : Diagnosis Proce-
.
Is the inspection result normal?
YES
>> INSPECTION END
NO
>> Repair power supply circuit of combination meter.
BUZZER
Under the condition of buzzer input
: On
Except above
: Off
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