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 

PB-34, "Fail-

Safe"

.

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 

GI-44,

"Intermittent Incident"

.

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 

GI-44,

"Intermittent Incident"

.

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