Nissan Altima 2007-2012 Service Manual: U0101 Can comm circuit

Description

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellent error detection ability. Many electronic control units are equipped onto a vehicle, 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.

DTC Logic

DTC DETECTION LOGIC

DTC CONFIRMATION PROCEDURE

1.PERFORM DTC CONFIRMATION PROCEDURE

1. Turn ignition switch ON and wait at least 3 seconds.

2. Check DTC.

Is DTC detected? YES >> EC-148, "Diagnosis Procedure".

NO >> INSPECTION END

Diagnosis Procedure

Go to LAN-16, "Trouble Diagnosis Flow Chart".

    Power supply and ground circuit
    Diagnosis Procedure 1.INSPECTION START Start engine. Is engine running? YES >> GO TO 8. NO >> GO TO 2. 2.CHECK ECM POWER SUPPLY CIRCUIT-I 1. Turn ignition switch OFF and then ON ...

    U0140 Can comm circuit
    Description CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle multiplex communication line with high data communication speed and excellen ...

    Other materials:

    Cooling system
    Cooling Circuit 1. Thermostat 2. Water control valve 3. Water control valve housing (Water outlet) 4. Cylinder block (Thermostat housing) 5. Water inlet 6. Radiator 7. Water pump 8. Cylinder block 9. Cylinder head A. Open B. Closed C. To electric throttle control D. To oil cooler E. ...

    Normal operating condition
    Description The majority of the audio concerns are the result of outside causes (bad CD, electromagnetic interference, etc.). NOISE The following noise results from variations in field strength, such as fading noise and multi-path noise, or external noise from trains and other sources. It i ...

    P0138, P0158 HO2S2
    Description The heated oxygen sensor 2, after three way catalyst (manifold), monitors the oxygen level in the exhaust gas on each bank. Even if switching characteristics of the air fuel ratio (A/F) sensor 1 are shifted, the air-fuel ratio is controlled to stoichiometric, by the signal from t ...