Nissan Altima 2007-2012 Service Manual: U1000 can comm circuit
Description
CAN (Controller Area Network) is a serial communication line for real time applications. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Modern vehicle is equipped with many electronic control unit, and each control unit shares information and links with other control units during operation (not independent). In CAN communication, control units are connected with 2 communication lines (CAN-H line, CAN-L line) allowing a high rate of information transmission with less wiring. Each control unit transmits/receives data but selectively reads required data only.
CAN Communication Signal Chart, refer to LAN-25, "CAN Communication Signal Chart".
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1.PERFORM SELF DIAGNOSTIC
1. Turn ignition switch ON and wait for 2 seconds or more.
2. Check “Self Diagnostic Result”.
Is “CAN COMM CIRCUIT” displayed? YES >> Refer to LAN-8, "CAN Communication Control Circuit".
NO >> Refer to GI-42, "Intermittent Incident".
U1010 control unit (can)
DTC Logic
DTC DETECTION LOGIC
Diagnosis Procedure
1. REPLACE BCM
When DTC U1010 is detected, replace BCM.
>> Replace BCM. Refer to BCS-96, "Removal and Installation". ...
Other materials:
Nissan vehicle immobilizer systemnats symptoms
Symptom Table
Security indicator does not turn ON or flash.
CAUTION:
• Follow Trouble Diagnosis Flowchart referring to “SEC-209, "Work Flow"”.
Determine malfunctioning
condition before performing this diagnosis.
• Check that vehicle is under the condition shown in “Con ...
Basic inspection
DIAGNOSIS AND REPAIR WORKFLOW
Work Flow
OVERALL SEQUENCE
DETAILED FLOW
1. GET INFORMATION FOR SYMPTOM
Get the detailed information from the customer about the symptom (the
condition and the environment when
the incident/malfunction occurred).
>> GO TO 2
2. CHECK DTC
1. Check DT ...
Audio unit (coupe)
Reference Value
TERMINAL LAYOUT
PHYSICAL VALUES
Wiring Diagram — Coupe
...