Can Communication System: Precaution

WARNING: This page is about a different car, the 2006 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.

BUS LINE REPAIR
1. After repairing the bus line with solder, wrap the repaired part with vinyl tape (see ELECTRONIC CIRCUIT INSPECTION PROCEDURE ).
  NOTE:
  - The CANL bus line and CANH bus line must be installed together, all the time.
  - When installing, make sure to twist the lines.
  - 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 (3.94 in.).
  - Make sure the length between each twist of the wire connecting the connectors is 80 mm (3.15 in.) or less.
  Fig 1: Wrapping Repaired Part With Vinyl Tape
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Do not use by-pass wiring between the connectors.
  NOTE: The feature of the twisted wire harness will be lost if you use by-pass wiring.
  
  Fig 2: Precaution For By-Pass Wire
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
CONNECTOR HANDLING
1. When inserting tester probes into a connector, insert them from the rear of the connector.
  
  Fig 3: Inserting Tester Probes Into Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Use a repair wire to check the connector if it is impossible to check continuity from the rear of the connector.
Fig 4: Checking Continuity From Rear Of Connector
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

PRECAUTION FOR DISCONNECTING BATTERY CABLE

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

SYSTEM NAME TABLE

System Name	See Procedure
Meter/Gauge System	INITIALIZATION