Nissan Leaf. Manual — part 1220
DIAGNOSIS AND REPAIR WORK FLOW
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BASIC INSPECTION
DIAGNOSIS AND REPAIR WORK FLOW
Work Flow
INFOID:0000000010121228
OVERALL SEQUENCE
DETAILED FLOW
JSCIA0790GB
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DIAGNOSIS AND REPAIR WORK 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 “Diagnostic Work Sheet”. (Refer to
>> 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 IN PDM (POWER DELIVERY MODULE)
1. Check DTC in PDM (Power Delivery Module).
2. Perform the following procedure if DTC is displayed.
-
Record DTC and freeze frame data. (Print them out with CONSULT.)
-
Erase DTC.
-
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.
• Perform Component Function Check if DTC CONFIRMATION PROCEDURE is not included on Service
Manual. 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.
DIAGNOSIS AND REPAIR WORK FLOW
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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 or check voltage of related PDM (Power Delivery Module)
terminals using CONSULT. Refer to
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
>> Check intermittent incident. Refer to
GI-53, "Intermittent Incident"
.
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:0000000010121229
DESCRIPTION
There are many operating conditions that lead to the malfunction of “charging 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 customer complaint.
Utilize the diagnostic worksheet in order to organize all the information for troubleshooting.
NOTE:
Some conditions may cause a DTC to be detected.
DIAGNOSTIC WORKSHEET
KEY POINTS
WHAT
Vehicle and parts
WHEN
Date, Frequencies
WHERE
Road conditions
HOW
Operating conditions,
Weather conditions,
Symptoms
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DIAGNOSIS AND REPAIR WORK FLOW
Diagnostic worksheet
Customer
name
License plate
No.
Date of first
registration
Model
Acceptance
Date
VIN
Mileage
km (mile)
Question
Group
Information from the customer
Vehicle condition at malfunction
occurrence
R/Q/N/O
READY (R) Quick charge (Q) Normal charge (N) Others (O)
Symptom
R
“READY” not enabled Poor drivability Shock Vibration
Driving impossible Noise Poor shifting Poor braking
Poor acceleration Low electricity consumption Switch malfunction
Warning lamp ON Others
(
)
Details of symptom
Information display
indication
Electricity consump-
tion
km (mile)/kW
Li-ion battery remain-
ing energy
/
Q, N
Charging unable Charging discontinued Slow charging
Poor timer charging Poor remote charging Immediate charging unable
Others
(
)
Details of symptom
Quick charger moni-
tor indication
O
A/C inoperative Poor A/C Dead 12V battery
Others
(
)
Details of symptom
Location/status of occurrence
R/O
Not applicable Ordinary road Highway Mountain pass
Rough road Level road Uphill Downhill Left/right turn
Others
(
)
Q/N/O
Start of charge During charging After the end of charging
During standby of timer charging During timer charging
At the end of timer charging During remote charging
Others
(
)
Driving condition
R
At the system startup During READY (Vehicle stopped)
At start During acceleration During driving with a constant speed
During coasting During braking Right before stopping Right after stopping
During POWER OFF operation A/C ON During shift change
Others
(
)
Vehicle speed
km (MPH)
Accelerator pedal
opening angle
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