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

SELF-DIAGNOSTIC RESULT CHECK

NOTE: If CONSULT-II is used with no connection of CONSULT-II CONVERTER, malfunctions might be detected in self-diagnosis depending on control unit which carry out CAN communication.

Connect to CONSULT-II, and select "BCM" on "SELECT SYSTEM" screen.
Select "BCM control unit" on "SELECT WORK ITEM" screen, and select "SELF-DIAG RESULTS".
Check display content in self-diagnostic results.

DIAGNOSIS ITEM

CONSULT-II display code	Diagnosis item
U1000	CAN COMM
	CAN CIRC 1
	CAN CIRC 2
	CAN CIRC 3
	CAN CIRC 4
	CAN CIRC 5

Contents displayed

No malfunction. Inspection End

Malfunction in CAN communication system: GO TO 2.

SYMPTOM CHECK

Select "CAN diagnosis support monitor" in data monitor.
Select "START' and check display content.

DIAGNOSIS ITEM

Diagnosis item	Self-diagnostic result content
Diagnosis item	Normal	Not normal (Example)
CAN COMM	OK	NG
CAN CIRC 1	OK	UNKWN
CAN CIRC 2	OK	UNKWN
CAN CIRC 3	OK	UNKWN
CAN CIRC 4	OK	UNKWN
CAN CIRC 5	OK	UNKWN

After printing the monitor items, go to "CAN System". Refer to CAN COMMUNICATION .

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)

Use the Manual With the Right Hardware

When to See a Mechanic

Rather have a pro handle this?