Can Communication System: Precaution

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

1. This vehicle is equipped with an SRS

   (Supplemental Restraint System) which includes components 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 (See PRECAUTION ).

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 (3.937 in.) or less.
   • Leave approximately 80 mm (3.150 in.) loose in the twisted wires around the connector.
   Fig 1: Identifying Repaired Wire Area

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Do not use bypass wiring between the connectors.
   NOTE: The ability of the twisted bus lines to resist interference will be lost if bypass wiring is used.
   Fig 2: Precaution For - Do Not Use Bypass Wiring Between Connectors

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. When checking resistance with a tester, insert the tester probes from the backside (harness side) of the connector.
   Fig 3: Inserting Tester Probes From Backside (Harness Side) Of Connector

   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.

HINT:

RESET MEMORY cannot be completed by disconnecting the battery terminal.