Information
- "CAN" of LAN Article describes information similar to a vehicle and inspection procedures.
- For trouble diagnosis procedure, refer to " «TROUBLE DIAGNOSIS FLOW CHART»(ref-675575-S41142210102014120500000) " of "CAN FUNDAMENTAL".
Precaution for Supplemental Restraint System (SRS) "AIR BAG" and "SEAT BELT PRE-TENSIONER"
The Supplemental Restraint System such as "AIR BAG" and "SEAT BELT PRE-TENSIONER", used along with a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certain types of collision. This system includes seat belt switch inputs and dual stage front air bag modules. The SRS system uses the seat belt switches to determine the front air bag deployment, and may only deploy one front air bag, depending on the severity of a collision and whether the front occupants are belted or unbelted.
Information necessary to service the system safely is included in the SRS AIRBAG and SEAT BELTS article of this Service Information.
| WARNING | To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death in the event of a collision which would result in air bag inflation, all maintenance must be performed by an authorized NISSAN/INFINITI dealer. Improper maintenance, including incorrect removal and installation of the SRS, can lead to personal injury caused by unintentional activation of the system. For removal of Spiral Cable and Air Bag Module, see the SRS AIRBAG . Do not use electrical test equipment on any circuit related to the SRS unless instructed to in this Service Information. SRS wiring harnesses can be identified by yellow and/or orange harnesses or harness connectors. |
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
| WARNING | When working near the Airbag Diagnosis Sensor Unit or other Airbag System sensors with the Ignition ON or engine running, DO NOT use air or electric power tools or strike near the sensor(s) with a hammer. Heavy vibration could activate the sensor(s) and deploy the air bag(s), possibly causing serious injury. When using air or electric power tools or hammers, always switch the Ignition OFF, disconnect the battery and wait at least three minutes before performing any service. |
CAN COMMUNICATION SYSTEM: CAN Communication Control Circuit
CAN communication control circuit is incorporated into the control unit and transmits/receives CAN communication signals.
Scheme 29
Scheme 29: CAN COMMUNICATION SYSTEM: CAN Communication Control Circuit
| Component | System description |
|---|
| CAN controller | It controls CAN communication signal transmission and reception, error detection, etc. |
| Transceiver IC | It converts digital signal into CAN communication signal, and CAN communication signal into digital signal. |
| Noise filter | It eliminates noise of CAN communication signal. |
| Termination circuit (1) (Resistance of approx. 120 ohms) | Generates a potential difference between CAN-H and CAN-L. |
| (1) These are the only control units wired with both ends of CAN communication system. |
| (1) | These are the only control units wired with both ends of CAN communication system. |
CAN COMMUNICATION SYSTEM: CAN Communication Signal Chart
Refer to " HOW TO USE CAN COMMUNICATION SIGNAL CHART " for how to use CAN communication signal chart.
Note. Refer to " ABBREVIATION LIST " for the abbreviations of the connecting units. The air bag diagnosis sensor unit and AV control unit uses CAN communication only for communicating with the diagnostic tool (not with other connected control units).
Scheme 30
Scheme 30: CAN COMMUNICATION SYSTEM: CAN Communication Signal Chart
Scheme 31
Scheme 32
Scheme 33
Scheme 33: Wiring Diagram
Scheme 34
Scheme 34: Connector End Views
Scheme 35
Scheme 36
Scheme 37
Scheme 38
Interview Sheet
Note. Refer to " TROUBLE DIAGNOSIS PROCEDURE " for how to use interview sheet.
Scheme 39
Scheme 39: Interview Sheet
Main Line
| Malfunction area | Reference |
|---|
| Main line between IPDM E/R and data link connector | " DIAGNOSIS PROCEDURE " |
| Main line between IPDM E/R and around view monitor control unit | " DIAGNOSIS PROCEDURE " |
| Main line between around view monitor control unit and data link connector | " DIAGNOSIS PROCEDURE " |
Branch Line
| Malfunction area | Reference |
|---|
| ECM branch line circuit | " DIAGNOSIS PROCEDURE " |
| ABS actuator and electric unit (control unit) branch line circuit | " DIAGNOSIS PROCEDURE " |
| IPDM E/R branch line circuit | " DIAGNOSIS PROCEDURE " |
| TCM branch line circuit | " DIAGNOSIS PROCEDURE " |
| Around view monitor control unit branch line circuit | " DIAGNOSIS PROCEDURE " |
| Air bag diagnosis sensor unit branch line circuit | " DIAGNOSIS PROCEDURE " |
| AV control unit branch line circuit | " DIAGNOSIS PROCEDURE " |
| Data link connector branch line circuit | " DIAGNOSIS PROCEDURE " |
| EPS control unit branch line circuit | " DIAGNOSIS PROCEDURE " |
| Combination meter branch line circuit | " DIAGNOSIS PROCEDURE " |
| Steering angle sensor branch line circuit | " DIAGNOSIS PROCEDURE " |
| BCM branch line circuit | " DIAGNOSIS PROCEDURE " |
Short Circuit
| Malfunction area | Reference |
|---|
| CAN communication circuit | " DIAGNOSIS PROCEDURE " |
