Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Nissan-Datsun Sentra SE-RFACTORY OEM SERVICE PROCEDURE
CAN Communication Inspection Using CONSULT-II (Self-Diagnosis)
WARNING: This page is about a different car, the 2004 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
- CHECK SELF-DIAGNOSTIC RESULTΒ CAUTION: 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 CHART
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 CHECKΒ
- Select "CAN diagnosis support monitor" in data monitor.
- Select "START" and check display content.DIAGNOSIS ITEM CHART
Diagnosis item Self-diagnostic result content 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 PRECAUTIONS WHEN USING CONSULT-II .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.
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