Nissan Altima (L32) 2007-2012 Service Manual ≻ Engine control system QR25DE for california ≻ Component diagnosis ≻ U0101 Can comm circuit

Nissan Altima (L32) 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 ...

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