Nissan Leaf. Instruction — part 182
DIAGNOSIS AND REPAIR WORK FLOW
BR-49
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000010122999
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
BR-50, "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 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 the 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 (1)
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 7.
4.
PERFORM SELF-DIAGNOSIS (2)
With CONSULT
1. Turn the power switch OFF to ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
2. Repeat step 1 two or more times.
CAUTION:
Be sure to wait for 5 seconds or more after turning the power switch OFF.
3. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
4. Close all doors (including back door), check that the room lamp is OFF, get out of the vehicle, and wait for
3 minutes or more with all doors closed.
CAUTION:
Never operate the vehicle while waiting.
5. Turn the power switch ON without depressing the brake pedal.
CAUTION:
Never set the vehicle to READY.
6. Start CONSULT and erase self-diagnosis result of “BRAKE”.
7. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
8. Close all doors (including back door), check that the room lamp is OFF, get out of the vehicle, and wait for
3 minutes or more with all doors closed.
CAUTION:
Never operate the vehicle while waiting.
9. Turn the power switch ON without depressing the brake pedal.
CAUTION:
BR-50
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
Never set the vehicle to READY.
10. Depress brake pedal by 100 mm (3.94 in) or more, and hold the position for 5 seconds or more.
11. Release brake pedal.
12. Start CONSULT and perform “BRAKE” self-diagnosis.
Is DTC detected?
YES
>> Record or print self-diagnosis results. GO TO 5.
NO
>> GO TO 7.
5.
RECHECK SYMPTOM
With CONSULT
1. Erase self-diagnosis results from the memory.
2. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
3. Close all doors (including back door), check that the room lamp is OFF, get out of the vehicle, and wait for
3 minutes or more with all doors closed.
CAUTION:
Never operate the vehicle while waiting.
4. Perform DTC reproduction procedures for the system that is malfunctioning.
NOTE:
When multiple DTCs are detected, refer to
BR-37, "DTC Inspection Priority Chart"
order for performing the diagnosis.
Is DTC detected?
YES
>> GO TO 6.
NO
>> Check harness and connectors based on the information obtained by the interview. Refer to
.
6.
REPAIR OR REPLACE ERROR-DETECTED PART
1. Repair or replace the part that is malfunctioning. Reconnect part or connector after repairing or replacing.
Erase DTC from the memory when DTC is detected.
2. Turn the power switch OFF to exit CONSULT, and disconnect CONSULT from data link connector.
3. Close all doors (including back door), check that the room lamp is OFF, get out of the vehicle, and wait for
3 minutes or more with all doors closed.
CAUTION:
Never operate the vehicle while waiting.
>> GO TO 7.
7.
IDENTIFY ERROR-DETECTED SYSTEM BY SYMPTOM DIAGNOSIS
Estimate which system is malfunctioning according to the possible symptoms based on symptom diagnosis
and perform check.
Can the malfunctioning part be identified?
YES
>> GO TO 8.
NO
>> Check harness and connectors based on the information obtained by the interview. Refer to
.
8.
FINAL CHECK
With CONSULT
1. Check the reference value for “BRAKE”. Refer to
.
2. Perform the operation check. Check that the symptom is not reproduced under the same conditions as
when the symptom is reproduced before.
Is the symptom reproduced?
YES
>> GO TO 3.
NO
>> INSPECTION END
Diagnostic Work Sheet
INFOID:0000000010123000
Description
DIAGNOSIS AND REPAIR WORK FLOW
BR-51
< BASIC INSPECTION >
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• In general, customers have their own criteria for a symptom. Therefore, it is important to understand the
symptom and status well enough by interviewing the customer about the symptom 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
Traction mo-
tor
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 traction motor 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)
Other conditions
Memo
BR-52
< BASIC INSPECTION >
ADDITIONAL SERVICE WHEN REPLACING ELECTRICALLY-DRIVEN INTELLI-
GENT BRAKE UNIT
ADDITIONAL SERVICE WHEN REPLACING ELECTRICALLY-DRIVEN IN-
TELLIGENT BRAKE UNIT
Description
INFOID:0000000010123001
When the electrically-driven intelligent brake unit was replaced, perform stroke sensor 0 point learning.
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