Nissan Altima (L32) 2007-2012 Service Manual ≻ Engine control system QR25DE except 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-677, "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 O ...

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:

Windshield-washer fluid
Windshield-washer fluid reservoir Fill the windshield-washer fluid reservoir periodically. Add windshield-washer fluid when the "Low Washer Fluid" warning appears in the vehicle information display. To check the fluid level with the dip tube, use your finger to plug the center hole A of the cap/tu ...

System malfunction
If the RAB system malfunctions, it will be turned off automatically, the RAB system warning light will illuminate, and the "Malfunction: See Owner’s Manual" warning message will appear in the vehicle information display and a chime will sound. Action to take If the warning light illuminates, park ...

Air bags, seat belts and child restraints
Top tether strap anchor Rear seat belts with pretensioner(s) for outboard seating Roof-mounted curtain side-impact and rollover supplemental air bag Front seat-mounted side-impact supplemental air bag Head restraints/headrests Front seat belt with pretensioner(s) and shoulder height adju ...