Toyota RAV4 manuals

Toyota RAV4 Service Manual: 4Wd control ecu communication stop mode

Toyota RAV4 Service Manual / Can communication / Fail-safe chart / 4Wd control ecu communication stop mode

Description

Toyota RAV4. 4Wd control ecu communication stop mode


Hint:

For vehicle with 4wd only.

Wiring diagram

Toyota RAV4. 4Wd control ecu communication stop mode


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 line for disconnection (4wd control ecu branch wire)

Toyota RAV4. Check can bus line for disconnection (4wd control ecu branch wire)


  1. Disconnect the e57 4wd control ecu connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance



  1. Check wire harness (4wd control ecu - battery and body ground)

Toyota RAV4. Check wire harness (4wd control ecu - battery and body ground)


  1. Disconnect the e57 4wd control ecu connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance


  1. Measure the voltage of the wire harness side connector.

Standard voltage




Replace 4wd control ecu

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