Infiniti QX56 (Z62). Manual — part 459
DLN-36
< WIRING DIAGRAM >
[TRANSFER: ATX90A]
4WD SYSTEM
JCDWM1074GB
4WD SYSTEM
DLN-37
< WIRING DIAGRAM >
[TRANSFER: ATX90A]
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JCDWM1075GB
DLN-38
< BASIC INSPECTION >
[TRANSFER: ATX90A]
DIAGNOSIS AND REPAIR WORK FLOW
BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000006222232
DETAILED FLOW
1.
INTERVIEW FROM THE CUSTOMER
Clarify customer complaints before inspection. First of all, perform an interview utilizing
and reproduce symptoms as well as fully understand it. Ask customer about his/her complaints
carefully. Check symptoms by driving vehicle with customer, if necessary.
CAUTION:
Customers are not professional. Never guess easily like “maybe the customer means that...,” or
“maybe the customer mentions this symptom”.
>> GO TO 2.
2.
CHECK SYMPTOM
Reproduce the symptom that is indicated by the customer, based on the information from the customer
obtained by interview. Also check that the symptom is not caused by fail-safe function. Refer to
.
CAUTION:
When the symptom is caused by normal operation, fully inspect each portion and obtain the under-
standing of customer that the symptom is not caused by a malfunction.
>> GO TO 3.
3.
PERFORM SELF-DIAGNOSIS
With CONSULT-III
Perform self-diagnosis for “ALL MODE AWD/4WD”.
Is any DTC detected?
YES
>> Record or print self-diagnosis results. GO TO 4.
NO
>> GO TO 6.
4.
RECHECK SYMPTOM
With CONSULT-III
1.
Erase self-diagnostic results for “ALL MODE AWD/4WD”.
2.
Perform DTC confirmation procedures for the error detected system.
NOTE:
If some DTCs are detected at the same time, determine the order for performing the diagnosis based on
29, "DTC Inspection Priority Chart"
Is any DTC detected?
YES
>> GO TO 5.
NO
>> Check harness and connectors based on the information obtained by interview. Refer to
.
5.
REPAIR OR REPLACE ERROR-DETECTED PARTS
• Repair or replace error-detected parts.
• Reconnect part or connector after repairing or replacing.
• When DTC is detected, erase self-diagnostic results for “ALL MODE AWD/4WD”.
>> GO TO 7.
6.
IDENTIFY ERROR-DETECTED SYSTEM BY SYMPTOM DIAGNOSIS
Estimate error-detected system based on symptom diagnosis and perform inspection.
Can the error-detected system be identified?
DIAGNOSIS AND REPAIR WORK FLOW
DLN-39
< BASIC INSPECTION >
[TRANSFER: ATX90A]
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YES
>> GO TO 7.
NO
>> Check harness and connectors based on the information obtained by interview. Refer to
.
7.
FINAL CHECK
With CONSULT-III
1.
Check the reference value for “ALL MODE AWD/4WD”.
2.
Recheck the symptom and check that symptom is not reproduced on the same conditions.
Is the symptom reproduced?
YES
>> GO TO 3.
NO
>> INSPECTION END
Diagnostic Work Sheet
INFOID:0000000006222233
Description
• In general, customers have their own criteria for a problem. Therefore, it is important to understand the
symptom and status well enough by asking the customer about his/her concerns carefully. To systemize all
the information for the diagnosis, prepare the interview sheet referring to the interview points.
• In some cases, multiple conditions that appear simultaneously may cause a DTC to be detected.
Interview sheet sample
Interview sheet
Customer
name
MR/MS
Registration
number
Initial year reg-
istration
Vehicle type
VIN
Storage
date
Engine
Mileage
km (
Mile)
Symptom
Vehicle does not enter 4WD mode.
4WD warning lamp turns on.
Heavy tight-corner braking symptom occurs
Noise
Vibration
Others
(
)
First occurrence
Recently
Others (
)
Frequency of occurrence
Always
Under a certain conditions of
Sometimes (time(s)/day)
Climate
conditions
Irrelevant
Weather
Fine
Cloud
Rain
Snow
Others (
)
Temperature
Hot
Warm
Cool
Cold
Temperature [Approx.
°
C (
°
F)]
Relative humidity
High
Moderate
Low
Road conditions
Urban area
Suburb area
High way
Mounting road (uphill or down hill)
Rough road
Operation conditions, etc.
Irrelevant
When engine starts
During idling
During driving
During acceleration
At constant speed driving
During deceleration
During cornering (right curve or left curve)
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