Highlander 4WD V6-3.5L (2GR-FE) (2008)
Information Bus: Service Precautions
CAN Communication System
CAN COMMUNICATION: CAN COMMUNICATION SYSTEM: PRECAUTION
PRECAUTION
1. IGNITION SWITCH EXPRESSIONS
HINT: The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table
below are used in this section.
2. 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.
3. SRS AIRBAG SYSTEM HANDLING PRECAUTIONS
(a) This vehicle is equipped with an SRS (Supplemental Restraint System) which includes parts 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 SRS.
4. BUS WIRE REPAIR
(a) After repairing a bus wire with solder, wrap the repaired part with electrical tape.
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The CANL bus wire and CANH bus wire must be installed together at all times.
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When installing, make sure that they are twisted.
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CAN bus wires are likely to be influenced by electrical noise if the bus wires are not twisted.
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The difference in length between the CANL bus wire and CANH bus wire should be 100 mm (3.937 in.) or less.
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Leave approximately 80 mm (3.150 in.) loose in the twisted wires around the connector.
(b) Do not use bypass wiring between the connectors.
NOTE: The ability of the twisted bus wires to resist interference will be lost if bypass wiring is used.
5. CONNECTOR HANDLING
(a) When checking resistance with a tester, insert the tester probes from the backside (harness side) of the connector.