Example of Filling in Check Sheet When Initial Conditions Are Reproduced

Fig 1: Putting Check Mark To No Indication In Check Sheet

Courtesy of NISSAN MOTOR CO., U.S.A.

1. Put a check mark to "No indication" if some of unit names listed on the column of diagnosis system selection screen of a check sheet table are not displayed on "SELECT SYSTEM" screen attached to the check sheet.
   NOTE: Put a check mark to "No indication" of HVAC because HVAC is not displayed on "SELECT SYSTEM" screen.
2. Confirm the unit name that "UNKWN" is displayed from the copy of "CAN DIAG SUPPORT MNTR" screen of "ENGINE" attached to the check sheet, and then put a check mark to the check sheet table.
   NOTE: In "CAN DIAG SUPPORT MNTR" screen"UNKWN" is not displayed. Do not put a check it.
3. Confirm the unit name that "UNKWN" is displayed on the copy of "CAN DIAG SUPPORT MNTR" screen of "TRANSMISSION" and "ABS" as well as "ENGINE". And then, put a check mark to the check sheet table.
   NOTE:

   • For "A/T""UNKWN" is not displayed. Do not put a check it.
   • For "ABS""UNKWN" is not displayed. Do not put a check it.
   Fig 2: Putting Check Mark To UNKWN In Check Sheet

   Courtesy of NISSAN MOTOR CO., U.S.A.
4. Display unit reads the CAN diagnosis monitor check sheet (B) "CAN COMMUNICATION LINE CHECK (WITH MONOCHROME DISPLAY UNIT) " transferred from the display screen (A). The transferred CAN diagnosis monitor check sheet is copied to the Check sheet, and conversed according to the Display unit Translation Sheet (C). And then put a check mark to the check sheet table.
   NOTE: In the CAN diagnosis monitor check sheet (B), check marks are put to "CAN4""CAN6" and "CAN9". But, in the column of the check sheet table indication in Display unit Translation Sheet (C)"Front air control" is listed only for "CAN4". Therefore, put a check mark to "Front air control" because "UNKWN" is listed on the column of reception diagnosis of the check sheet table.
   Fig 3: Putting Check Mark To IPDM E/R Of UNKWN In Check Sheet

   Courtesy of NISSAN MOTOR CO., U.S.A.
5. Confirm the unit name that "UNKWN" is displayed on the copy of "CAN DIAG SUPPORT MNTR" screen of "BCM" and "IPDM E/R" as well as "ENGINE". And then, put a check mark to the check sheet table.
   NOTE:

   • For "BCM""UNKWN" is not displayed. Do not put a check to it.
   • For "IPDM E/R""UNKWN" is not displayed. Do not put a check to it.
   Fig 4: Putting Check Mark To Check Sheet Table

   Courtesy of NISSAN MOTOR CO., U.S.A.
   NOTE: There is a case that some of "CAN DIAG SUPPORT MNTR" and "SELF-DIAG RESULTS" are not needed for diagnosis. In the case"UNKWN" and "CAN COMM CIRCUIT(U1000)" in "Check sheet results (example)" change to "-". Then, ignore check marks on the Check sheet table.
6. Perform system diagnosis for possible causes identified.
7. Perform diagnosis again after inspection and repair. Make sure that repair is completely performed, and then end the procedure.

Start CAN system trouble diagnosis if this procedure can be confirmed. Refer to "CAN COMMUNICATION UNIT ".