Toyota RAV4 manuals

Toyota RAV4 Service Manual: Can bus line

Description

When any dtc for the can communication system is output, first measure the resistance between the terminals of the dlc3 to specify the trouble area, and check that there is not a short in the can main wire, between the main wire, to +b, or to gnd.

Wiring diagram

Toyota RAV4. Can bus line


Toyota RAV4. Can bus line


Inspection procedure

Notice:

Hint:

Operating the ignition switch, any switches or any doors triggers related ecu and sensor communication with the can, which causes resistance variation.

  1. Check can bus wire (main wire for open, can bus lines for short circuit)

Toyota RAV4. Check can bus wire (main wire for open, can bus lines for short circuit)


  1. Measure the resistance of the dlc3.

Standard resistance




  1. Check can bus line for short to +b

Toyota RAV4. Check can bus line for short to +b


  1. Measure the resistance of the dlc3.

Standard resistance




  1. Check can bus line for short to gnd

Toyota RAV4. Check can bus line for short to gnd


  1. Measure the resistance of the dlc3.

Standard resistance




Check how to proceed with troubleshooting

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Other materials:

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