Nissan Altima 2007-2012 Service Manual: DTC U1000 can communication

DTC Logic

DTC DETECTION LOGIC

Diagnosis Procedure

Symptom: Displays “CAN COMM CIRC [U1000]” as a self-diagnosis result of combination meter.

1.CHECK CAN COMMUNICATION

Select “SELF-DIAG RESULTS” mode for “METER/M&A” with CONSULT-III.

>> Go to “LAN system”. Refer to LAN-10, "Condition of Error Detection".

    Component diagnosis
    ...

    DTC B2205 Vehicle speed circuit
    Description The ABS actuator and electric unit (control unit) provides a vehicle speed signal to the combination meter via CAN communication lines. DTC Logic Diagnosis Procedure Symptom: Disp ...

    Other materials:

    P1745 line pressure control
    Description The pressure control solenoid valve A (line pressure solenoid valve) regulates the oil pump discharge pressure to suit the driving condition in response to a signal sent from the TCM. DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE NOTE: If “DTC CONFIRMATION PROCED ...

    Fuses
    Two types of fuses are used. Type A is used in the fuse boxes in the engine compartment. Type B is used in the passenger compartment fuse box. Type A fuses are provided as spare fuses. They are stored in the passenger compartment fuse box. Type A fuses can be installed in the engine com ...

    P2127, P2128 APP Sensor
    Description The accelerator pedal position sensor is installed on the upper end of the accelerator pedal assembly. The sensor detects the accelerator position and sends a signal to the ECM. Accelerator pedal position sensor has two sensors. These sensors are a kind of potentiometers which tr ...