Nissan Leaf. Instruction — part 446
VCM
EVB-67
< WIRING DIAGRAM >
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AACIA0161GB
EVB-68
< WIRING DIAGRAM >
VCM
AACIA0162GB
DIAGNOSIS AND REPAIR WORK FLOW
EVB-69
< BASIC INSPECTION >
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000010121048
DETAILED FLOW
1.
GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the condition and the environment when
the incident/malfunction occurred) using the “Question sheet”. (Refer to
EVB-70, "Diagnostic Work Sheet"
>> GO TO 2.
2.
CHECK DTC IN VCM
1. Check DTC in VCM.
2. Check related service bulletins for information.
Are any DTCs detected?
YES
>> Check the DTC. Refer to
NO
>> GO TO 3.
3.
CHECK DTC
1. Check DTC.
2. Perform the following procedure if DTC is displayed.
-
Record DTC and freeze frame data. (Print them out with CONSULT.)
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Erase DTC.
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Study the relationship between the cause detected by DTC and the symptom described by the customer.
(Symptom Matrix Chart is useful. Refer to
3. Check related service bulletins for information.
Are any symptoms described and any DTCs detected?
Symptom is described, DTC is detected>>GO TO 4.
Symptom is described, DTC is not detected>>GO TO 5.
Symptom is not described, DTC is detected>>GO TO 6.
4.
CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
Also study the normal operation and fail-safe related to the symptom. Refer to
and
Diagnosis Work Sheet is useful to verify the incident.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 6.
5.
CONFIRM THE SYMPTOM
Try to confirm the symptom described by the customer.
Also study the normal operation and fail-safe related to the symptom. Refer to
and
Diagnosis Work Sheet is useful to verify the incident.
Verify relation between the symptom and the condition when the symptom is detected.
>> GO TO 7.
6.
PERFORM DTC CONFIRMATION PROCEDURE
Perform DTC CONFIRMATION PROCEDURE for the displayed DTC, and then check that DTC is detected
again.
NOTE:
• Freeze frame data is useful if the DTC is not detected.
EVB-70
< BASIC INSPECTION >
DIAGNOSIS AND REPAIR WORK FLOW
• Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service
Instruction. This simplified check procedure is an effective alternative though DTC cannot be detected during
this check.
If the result of Component Function Check is NG, it is the same as the detection of DTC by DTC CONFIR-
MATION PROCEDURE.
Is DTC detected?
YES
>> GO TO 8.
NO
>> Check according to
GI-53, "Intermittent Incident"
.
7.
DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE
Detect malfunctioning system according to
based on the confirmed symptom in
step 4, and determine the trouble diagnosis order based on possible causes and symptoms.
Is the symptom described?
YES
>> GO TO 8.
NO
>> Monitor input data from related sensors using CONSULT.
8.
DETECT MALFUNCTIONING PART BY DIAGNOSIS PROCEDURE
Inspect according to Diagnosis Procedure of the system.
Is a malfunctioning part detected?
YES
>> GO TO 9.
NO
>> Monitor input data from related sensors using CONSULT.
9.
REPAIR OR REPLACE THE MALFUNCTIONING PART
1. Repair or replace the malfunctioning part.
2. Reconnect parts or connectors disconnected during Diagnosis Procedure again after repair and replace-
ment.
3. Check DTC. If DTC is displayed, erase it.
>> GO TO 10.
10.
FINAL CHECK
When DTC was detected in step 3, perform DTC CONFIRMATION PROCEDURE or Component Function
Check again, and then check that the malfunction have been completely repaired.
When symptom was described from the customer, refer to confirmed symptom in step 4 or 5, and check that
the symptom is not detected.
Is DTC detected and does symptom remain?
YES-1 >> DTC is detected: GO TO 8.
YES-2 >> Symptom remains: GO TO 5.
NO
>> Before returning the vehicle to the customer, always erase DTC.
Diagnostic Work Sheet
INFOID:0000000010121049
DESCRIPTION
There are many operating conditions that lead to the malfunction of
“EV battery system” components. A good grasp of such conditions
can make troubleshooting faster and more accurate.
In general, each customer feels differently about symptoms. It is
important to fully understand the symptoms or conditions for a cus-
tomer complaint.
Utilize the diagnostic worksheet in order to organize all the informa-
tion for troubleshooting.
NOTE:
Some conditions may cause a DTC to be detected.
WORKSHEET SAMPLE
JSCIA0412GB
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