Nissan X-Trail 32. Manual — part 1629
PB-42
< WIRING DIAGRAM >
ELECTRIC PARKING BRAKE SYSTEM
JRFWC1745GB
DIAGNOSIS AND REPAIR WORK FLOW
PB-43
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000010722932
DETAILS OF TROUBLE DIAGNOSIS FLOWCHART
1.
COLLECT THE INFORMATION FROM THE CUSTOMER
It is also important to clarify customer concerns before starting the inspection. First of all, perform an interview
utilizing
PB-44, "Diagnostic Work Sheet"
and reproduce the symptom as well as fully understand it. Depending
on the situations, drive the vehicle with the customer and check the symptom.
CAUTION:
Customers are not professionals. 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 SELF-DIAGNOSIS
With CONSULT
1.
Turn the ignition switch OFF to ON.
CAUTION:
Be sure wait of 10 seconds after turning ignition switch OFF or ON.
2.
Perform self-diagnosis for “EHS/PKB”.
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 result for “EHS/PKB”.
2.
Turn the ignition switch OFF to ON.
CAUTION:
Be sure wait of 10 seconds after turning ignition switch OFF or ON.
3.
Perform DTC confirmation procedure for error-detected system.
NOTE:
If some DTCs are detected at the some time, determine the order for performing the diagnosis based on
PB-35, "DTC Inspection Priority Chart"
Is 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
1.
Repair or replace error-detected parts.
2.
Reconnect part or connector after repairing or replacing.
3.
When DTC is detected, erase self-diagnostic result for “EHS/PKB”.
CAUTION:
PB-44
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
Be sure wait of 10 seconds after turning ignition switch OFF or ON.
>> GO TO 6.
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?
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 “EHS/PKB”.
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:0000000010722933
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
DIAGNOSIS AND REPAIR WORK FLOW
PB-45
< BASIC INSPECTION >
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Interview sheet
Customer
name
MR/MS
Registration num-
ber
Initial year
registration
Vehicle type
VIN
Storage date
Engine
Mileage
km ( Mile)
Situation
where mal-
function is
occurred
Malfunction category
Unable to brake
Unable to release
Generates abnormal sound
Vehicle does not stop despite braking operation
Parking brake continues breaking despite release operation
Hooked at automatic release operation
Vehicle slides down at automatic release operation
Electric parking brake indicator lamp does not turns ON
Electric parking brake indicator lamp keep turns ON
Electric parking brake indicator lamp blinks
Master warning lamp turns ON
A text displayed on combination meter
Detailed symptom
Detailed abnor-
mal sound
Select lever position
P
R
N
D
Seat belt operation
OFF
ON
Brake pedal status
Not depress
Depress
Electric parking brake sta-
tus
At release operation
At braking operation
During release
During braking
Continuously
Vehicle status
Ignition switch OFF
Ignition switch ON
Vehicle running status
At start with shift in D-range
While driving with shift in D-range
When stopped with shift in D-range
At start with shift in R-range
While driving with shift in R-range
When stopped with shift in R-range
When stopped with shift in N-range
When stopped with shift in P-range
Low speed (while driving)
Normal speed (while driving)
High speed (while driving)
Road condition
Steep downhill road
Gentle downhill road
Flat road
Gentle uphill road
Steep uphill road
Number of occupants
5
4
3
2
1
Vehicle loading condition
(quantity)
Mechanical release history
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