Nissan Leaf. Manual - part 372

 

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Nissan Leaf. Manual - part 372

 

 

DEF-22

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORK FLOW

BASIC INSPECTION

DIAGNOSIS AND REPAIR WORK FLOW

Work Flow

INFOID:0000000010119494

OVERALL SEQUENCE

DETAILED FLOW

JMKIA2270GB

DIAGNOSIS AND REPAIR WORK FLOW

DEF-23

< BASIC INSPECTION >

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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).

>> GO TO 2.

2.

 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.)

-

Erase DTC.

-

Study the relationship between the cause detected by DTC and the symptom described by the customer.

3. Check related service bulletins for information.
Is any symptom described and any DTC detected?

Symptom is described, DTC is displayed>>GO TO 3.

Symptom is described, DTC is not displayed>>GO TO 4.

Symptom is not described, DTC is displayed>>GO TO 5.

3.

 CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT to the vehicle in “Data Monitor” mode and check real time diagnosis results.

Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 5.

4.

 CONFIRM THE SYMPTOM

Confirm the symptom described by the customer.

Connect CONSULT to the vehicle in “Data Monitor” mode and check real time diagnosis results.

Verify relation between the symptom and the condition when the symptom is detected.

>> GO TO 6.

5.

 PERFORM DTC CONFIRMATION PROCEDURE

Perform DTC Confirmation Procedure for the displayed DTC, and then check that DTC is detected again.

At this time, always connect CONSULT to the vehicle, and check diagnostic results in real time.

If two or more DTCs are detected, refer to 

BCS-47, "DTC Inspection Priority Chart"

 and determine trouble

diagnosis order.

NOTE:

• Freeze frame data is useful if the DTC is not detected.

• Perform Component Function Check if DTC Confirmation Procedure is not included in 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 Confirma-

tion Procedure.

Is DTC detected?

YES

>> GO TO 7.

NO

>> Refer to 

GI-53, "Intermittent Incident"

.

6.

 DETECT MALFUNCTIONING SYSTEM BY SYMPTOM TABLE

Detect malfunctioning system according to 

DEF-7, "System Description"

 based on the confirmed symptom in

step 4, and determine the trouble diagnosis order based on possible causes and symptom.

>> GO TO 7.

7.

 DETECT MALFUNCTIONING PART BY DIAGNOSTIC PROCEDURE

Inspect according to Diagnostic Procedure of the system.

NOTE:

DEF-24

< BASIC INSPECTION >

DIAGNOSIS AND REPAIR WORK FLOW

The Diagnostic Procedure described is based on open circuit inspection. A short circuit inspection is also

required for the circuit check in the Diagnostic Procedure.
Is malfunctioning part detected?

YES

>> GO TO 8.

NO

>> Check voltage of related BCM terminals using CONSULT.

8.

 REPAIR OR REPLACE THE MALFUNCTIONING PART

1. Repair or replace the malfunctioning part.

2. Reconnect parts or connectors disconnected during Diagnostic Procedure again after repair and replace-

ment.

3. Check DTC. If DTC is displayed, erase it.

>> GO TO 9.

9.

 FINAL CHECK

When DTC was detected in step 2, perform DTC Confirmation Procedure or Component Function Check

again, and then check that the malfunction has been repaired securely.

When symptom was described from the customer, refer to confirmed symptom in step 3 or 4, and check that

the symptom is not detected.
Does the symptom reappear?

YES (DTC is detected)>>GO TO 7.

YES (Symptom remains)>>GO TO 6.

NO

>> Inspection End.

REAR WINDOW DEFOGGER SWITCH

DEF-25

< DTC/CIRCUIT DIAGNOSIS >

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DTC/CIRCUIT DIAGNOSIS

REAR WINDOW DEFOGGER SWITCH

Component Function Check

INFOID:0000000010119495

1.

CHECK REAR WINDOW DEFOGGER SWITCH OPERATION 

With CONSULT

1. Select “REAR DEFOGGER” of “BCM” using CONSULT.

2. Select “REAR DEF SW” in “Data Monitor”.

3. Check “REAR DEF SW” indication under the following conditions:

Is the inspection result normal?

YES

>> Rear window defogger switch is OK.

NO

>> Refer to 

DEF-25, "Diagnosis Procedure"

.

Diagnosis Procedure

INFOID:0000000010119496

Regarding Wiring Diagram information, refer to 

DEF-14, "Wiring Diagram"

.

1.

CHECK REAR WINDOW DEFOGGER SWITCH OPERATION 

1. Turn power switch OFF.

2. Disconnect A/C auto amp. connector.

3. Turn power switch ON.

4. Check signal between A/C auto amp. harness connector and ground using oscilloscope.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK REAR WINDOW DEFOGGER SWITCH CIRCUIT

1. Turn power switch OFF.

2. Disconnect BCM connector.

3. Check continuity between BCM harness connector and A/C auto amp. harness connector.

Monitor item

Condition

Status

REAR DEF SW

Rear window defogger switch

Pressed

On

Not Pressed

Off

(+)

(-)

Voltage (V)

(Approx.)

A/C auto amp.

Connector

Terminal

M55

15

Ground

JPMIA0012GB

BCM

A/C auto amp.

Continuity 

Connector

Terminal

Connector

Terminal

M24

15

M55

15

Yes

 

 

 

 

 

 

 

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