Nissan Frontier. Manual - part 967

LAN-18

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

DIAGNOSIS AND REPAIR WORKFLOW

Interview Sheet (Example)

COLLECT DATA

Collect CONSULT Data

Print out or save the following CONSULT data.

• SELF-DIAG RESULTS

• CAN DIAG SUPPORT MNTR

NOTE:

JSMIA0823GB

LAN

DIAGNOSIS AND REPAIR WORKFLOW

LAN-19

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

Some items may not be needed depending on CAN system type of vehicle.

Create On-board Diagnosis Copy Sheet

Display the trouble diagnosis result of CAN communication with the on-board diagnosis function on the vehicle

monitor, etc. Copy them on the on-board diagnosis copy sheet.

NOTE:

JSMIA0810GB

LAN-20

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

DIAGNOSIS AND REPAIR WORKFLOW

For some models, CAN communication diagnosis result is received from the vehicle monitor. (CONSULT is

not available.)

CREATE DIAGNOSIS SHEET

NOTE:

Be sure to use the diagnosis sheet for the correct CAN system type.

Print Diagnosis Sheet

Print the diagnosis sheet for the applicable CAN system type.

Check Collected Data

Check that all ECUs are received, referring to “system” displayed in “ALL DTC.”

NOTE:

SKIB8722E

LAN

DIAGNOSIS AND REPAIR WORKFLOW

LAN-21

< BASIC INSPECTION >

[CAN FUNDAMENTAL]

C

D

E

F

G

H

I

J

K

L

B

A

O

P

N

For abbreviations, refer to 

LAN-36, "Abbreviation List"

.

DETECT THE ROOT CAUSE

Identify the root cause using the created diagnosis sheet.

Identifying the root cause

• Draw a line on the diagnosis sheet to indicate the possible cause. Narrow the search.

NOTE:

• Color-code when drawing lines.

• Do not draw a line onto a existing line.

• Drawing a line is not necessary if the circuit is shorted. Refer to “Present Error — Short Circuit —”, “Past

Error — Short Circuit —”.

Refer to the following for details of the trouble diagnosis procedure.

• “Present Error — Open Circuit —”

• “Present Error — Short Circuit —”

• “Past Error — Open Circuit —”

• “Past Error — Short Circuit —”

NOTE:

When the root cause appears to be a branch line or short circuit, be sure to check the control unit as well as

the communication line.

Present Error — Open Circuit —

JSMIA0811GB