Nissan Quest E52. Instruction — part 238
DIAGNOSIS AND REPAIR WORK FLOW
BRC-45
< BASIC INSPECTION >
[WITH VDC]
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000009651371
DETAILED FLOW
1.
INTERVIEW FROM THE CUSTOMER
Clarify customer complaints before inspection. First of all, perform an interview utilizing
and reproduce the symptom 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 mode. 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 THE SELF-DIAGNOSIS
With CONSULT
Perform self-diagnosis.
Is DTC detected?
YES
>> Record or print self-diagnosis results and freeze frame data (FFD). GO TO 4.
NO
>> GO TO 6.
4.
RECHECK THE SYMPTOM
With CONSULT
1.
Erase self-diagnostic results.
2.
Perform DTC confirmation procedures for the error-detected system.
NOTE:
If some DTCs are detected at the some time, determine the order for performing the diagnosis based on
BRC-37, "DTC Inspection Priority Chart"
[ABS actuator and electric unit (control unit)].
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 PART
• Repair or replace error-detected parts.
• Reconnect part or connector after repairing or replacing.
• When DTC is detected, erase self-diagnostic result for “ABS”.
>> 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?
BRC-46
< BASIC INSPECTION >
[WITH VDC]
DIAGNOSIS AND REPAIR WORK FLOW
YES
>> GO TO 7.
NO
>> Check harness and connectors based on the information obtained by interview. Refer to
.
7.
FINAL CHECK
With CONSULT
1.
Check the reference value for “ABS”.
2.
Recheck the symptom and check that the symptom is not reproduced on the same conditions.
Is the symptom reproduced?
YES
>> GO TO 3.
NO
>> INSPECTION END
Diagnostic Work Sheet
INFOID:0000000009651372
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
registration
Vehicle type
VIN
Storage date
Engine
Mileage
km ( Mile)
Symptom
Does not operate ( ) function
Warning lamp for ( ) turns ON.
Noise
Vibration
Other
( )
First occurrence
Recently
Other ( )
Frequency of occurrence
Always
Under a certain conditions of
Sometimes ( time(s)/day)
Climate con-
ditions
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
Highway
Mountainous road (uphill or downhill)
Rough road
Operating condition, etc.
Irrelevant
When engine starts
During idling
During driving
During acceleration
At constant speed driving
During deceleration
During cornering (right curve or left curve)
When steering wheel is steered (to right or to left)
DIAGNOSIS AND REPAIR WORK FLOW
BRC-47
< BASIC INSPECTION >
[WITH VDC]
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Other conditions
Memo
Interview sheet
Customer
name
MR/MS
Registration
number
Initial year
registration
Vehicle type
VIN
Storage date
Engine
Mileage
km ( Mile)
BRC-48
< BASIC INSPECTION >
[WITH VDC]
ADDITIONAL SERVICE WHEN REPLACING ABS ACTUATOR AND ELECTRIC
UNIT (CONTROL UNIT)
ADDITIONAL SERVICE WHEN REPLACING ABS ACTUATOR AND ELEC-
TRIC UNIT (CONTROL UNIT)
Description
INFOID:0000000009651373
When replaced the ABS actuator and electric unit (control unit), Perform steering angle sensor neutral posi-
tion. Refer to
.
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