Nissan Leaf. Manual - part 1220

 

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Nissan Leaf. Manual - part 1220

 

 

DIAGNOSIS AND REPAIR WORK FLOW

VC-47

< BASIC INSPECTION >

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BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000010121228

OVERALL SEQUENCE

DETAILED FLOW

JSCIA0790GB

VC-48

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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 

VC-49, "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 

EVC-102, "DTC Index"

.

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 

EVC-409, "Symptom Index"

.)

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 

VC-103, "Symptom Table"

 and

EVC-97, "Fail-Safe"

.

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 

VC-103, "Symptom Table"

 and

EVC-97, "Fail-Safe"

.

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 

EVC-409, "Symptom Index"

 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 

EVC-84, "Reference Value"

.

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

VC-50

< BASIC INSPECTION >

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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