Nissan Altima 2007-2012 Service Manual: U1000 can comm circuit

DescriptionCAN (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:

    Intelligent key
     CONSULT-III Function (BCM - INTELLIGENT KEY) WORK SUPPORT SELF-DIAG RESULT Refer to BCS-91, "DTC Index". DATA MONITOR ACTIVE TEST ...

    Removal and installation
    ENGINE ASSEMBLY Removal and Installation 1. Torque rod 2. RH engine mounting insulator 3. RH engine mount support 4. Front engine mounting bracket 5. Front engine mounting insulator 6. RH engine mount bracket 7. Lower torque rod bracket 8. Lower torque rod 9. Rear engine mounting insulat ...

    Heater core
    Removal and Installation COMPONENTS 1. Heater grommet 2. Heater pipe support 3. Heater and cooling unit foot duct LH 4. Heater core 5. Heater and cooling unit case REMOVAL 1. Remove the heater and cooling unit assembly. Refer to VTL-12, "Removal and Installation". 2. Remov ...