CAN Communication Check

WARNING: This page is about a different car, the 2008 Infiniti FX45 and 2008 Infiniti FX35. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MONITOR DESCRIPTION

Start self-diagnosis of DCU. Refer to "SELF-DIAGNOSIS MODE (DCU) ".

Select "CAN DIAG SUPPORT MONITOR". Refer to "CAN DIAG SUPPORT MONITOR ".

Fig 1: Identifying CAN DIAG SUPPORT MNTR Screen For Display Control Unit

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

ERROR ITEM REFERENCE CHART

Item	content		Error counter(Reference value)
Item	Normal condition	Error (Example)	Error counter(Reference value)
CAN_COMM	OK	NG	0 - 50
CAN_CIRC_1	OK	UNKWN	0 - 50
CAN_CIRC_2	OK	UNKWN	0 - 50
CAN_CIRC_3	OK	UNKWN	0 - 50
CAN_CIRC_4	OK	UNKWN	0 - 50
CAN_CIRC_5	OK	UNKWN	0 - 50
CAN_CIRC_6	OK	UNKWN	0 - 50
CAN_CIRC_7	OK	UNKWN	0 - 50
CAN_CIRC_8	OK	UNKWN	0 - 50
CAN_CIRC_9	UNKWN	UNKWN	0 - 50

Record each item display description (OK/NG/UNKWN) displayed on the following CAN DIAG SUPPORT MONITOR Check Sheet.
CAN DIAG SUPPORT MONITOR Check Sheet

CAN DIAG SUPPORT MONITOR CHECK SHEET

Diagnosis item	Screen display		Diagnosis item	Screen display
CAN_COMM	OK	NG	CAN_CIRC_5	OK	UNKWN
CAN_CIRC_1	OK	UNKWN	CAN_CIRC_6	OK	UNKWN
CAN_CIRC_2	OK	UNKWN	CAN_CIRC_7	OK	UNKWN
CAN_CIRC_3	OK	UNKWN	CAN_CIRC_8	OK	UNKWN
CAN_CIRC_4	OK	UNKWN	CAN_CIRC_9	OK	UNKWN

>> After filling in CAN DIAG SUPPORT MONITOR Check Sheet, GO TO "CAN SYSTEM SPECIFICATION CHART ".