Can Communication System: Precaution

WARNING: This page is about a different car, the 2008 Lexus IS F. However, it is still accessible from the selected car via links, so may be relevant.

STEERING SYSTEM HANDLING PRECAUTIONS
1. Care must be taken when replacing parts Incorrect replacement could affect the performance of the steering system and result in hazardous driving
SRS AIRBAG SYSTEM HANDLING PRECAUTIONS
1. This vehicle is equipped with an SRS (Supplemental Restraint System) which includes components such as the driver airbag and font 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 (See PRECAUTION )
BUS LINE REPAIR
1. After repairing the bus line with solder, wrap the repaired part with electrical tape
  NOTE:
  - The CANL bus line and CANH bus line must be installed together all the times.
  - When installing, make sure to twist them.
  - CAN bus lines are likely to be influenced by electrical noise if they are not twisted.
  - The difference in length between the CANL bus line and CANH bus line should be 100 mm (3.94 in.) or less.
  - Leave approximately 80 mm (3.15 in.) loose in the twisted wires around the connector.
    
    Fig 1: Identifying Bus Line Repair
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Do not use a bypass wire between the connectors
  NOTE: The ability of the twisted bus lines to resist interference will be lost if the bypass wire is used.
  
  Fig 2: Precaution Of Bypass Wire Between Connectors
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CONNECTOR HANDLING
1. When checking resistance with a tester, insert the tester probes from the backside (harness side) of the connector.
  
  Fig 3: Identifying Tester Probes
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Use a service wire to check the connector if it is impossible to check continuity from the rear of the connector

PRECAUTION FOR DISCONNECTING THE BATTERY TERMINAL

NOTE:

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

SYSTEM REFERENCE

System Name	See Procedure
Power Window Control System	INITIALIZATION

NOTE:

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

HINT.

RESET MEMORY cannot be completed by disconnecting the battery terminal