Information Bus: Service Precautions

CAN COMMUNICATION SYSTEM

PRECAUTION

NOTE: When disconnecting the cable from the negative (-) battery terminal, initialize the given system after the cable is reconnected.
- Power Windows Control System
- Sliding Roof System
- Clearance Sonar System
- Variable Gear Ratio Steering System


1. STEERING SYSTEM HANDLING PRECAUTIONS
a. Care must be taken when replacing parts. Incorrect replacement could affect the performance of the steering system and result in hazardous driving.

2. SRS AIRBAG SYSTEM HANDLING PRECAUTIONS
a. This vehicle is equipped with an SRS (Supplemental Restraint System) such as the driver airbag and front passenger airbag. Failure to carry out service operations in the correct sequence could cause unexpected SRS deployment during servicing and may lead to a serious accident. Before servicing (including removal or installation of parts, inspection or replacement), be sure to read the precautionary notice for the Supplemental Restraint System.

3. BUS LINE REPAIR




a. After repairing the bus line with solder, wrap the repaired part with vinyl tape.

NOTE:
- The CANL bus line and CANH bus line must be installed together, all the time.
- When installing, make sure to twist them.
- CAN bus lines are likely to be influenced by noise if the bus lines are not twisted.
- The difference in length of the CANL bus line and CANH bus line should be within 100 mm (3.937 in.).
- Leave approximately 80 mm (3.150 in.) loose in the twist around the connector.




b. Do not use bypass wiring between the connectors.

NOTE: The feature of the twisted wire harness will be lost if you use bypass wiring.

4. CONNECTOR HANDLING




a. When inserting tester probes into a connector, insert them from the rear of the connector.




b. Use a repair wire to check the connector if it is impossible to check continuity from the rear of the connector.

5. PRECAUTION FOR DISCONNECTING THE BATTERY CABLE

NOTE:
- When disconnecting the negative (-) battery terminal, initialize the following system after the terminal is reconnected.

System Name
Power Window Control System
Sliding Roof System
Clearance Sonar System
Variable Gear Ratio Steering System

- Perform the RESET MEMORY (AT initialization) operation after replacing the automatic transmission assembly, engine assembly or ECM.

HINT: RESET MEMORY cannot be completed by only disconnection of the battery terminal.