Can Communication Line Check

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

CHECK MONITOR DESCRIPTION

Start display control unit self-diagnosis. Refer to SELF-DIAGNOSIS MODE (DCU) .

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

Fig 1: Displaying CAN DIAG SUPPORT MONITOR Mode

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

CONTENT SPECIFICATION

Item	Content		Error counter
Normal condition	Error (Example)
CANCOMM	OK	NG	0-50
CANCIRC1	OK	UNKWN	0-50
CANCIRC2	OK	UNKWN	0-50
CANCIRC3	OK	UNKWN	0-50
CANCIRC4	OK	UNKWN	0-50
CANCIRC5	OK	UNKWN	0-50
CANCIRC6	OK	UNKWN	0-50
CANCIRC7	OK	UNKWN	0-50
CANCIRC8	OK	UNKWN	0-50
CANCIRC9	OK	UNKWN	0-50

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

Fig 2: Checking Continuity Between Display Control Unit Harness Connector M95 Terminal 51 (B), 55 (R) And Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

CAN DIAG SUPPORT MONITOR Check Sheet

SCREEN DISPLAY

Diagnosis item	Screen display		Diagnosis item	Screen display
CANCOMM	OK	NG	CAN_CIRC_5	OK	UNKWN
CANCIRC1	OK	UNKWN	CAN_CIRC_6	OK	UNKWN
CANCIRC2	OK	UNKWN	CAN_CIRC_7	OK	UNKWN
CANCIRC3	OK	UNKWN	CAN_CIRC_8	OK	UNKWN
CANCIRC4	OK	UNKWN	CAN_CIRC_9	OK	UNKWN

: After filling in CAN DIAG SUPPORT MONITOR Check Sheet, Go To CAN COMMUNICATION .