Toyota RAV4 manuals

Toyota RAV4 Service Manual: Short in can bus lines

Description

There may be a short circuit between the can bus lines when the resistance between terminals 6 (canh) and 14 (canl) of the dlc3 is below 54 .


Toyota RAV4. Short in can bus lines


Wiring diagram

Toyota RAV4. Short in can bus lines


Toyota RAV4. Short in can bus lines


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 lines for short circuit (dlc3 branch wire)

Toyota RAV4. Check can bus lines for short circuit (dlc3 branch wire)


  1. Disconnect the e68 no. 2 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus lines for short circuit (no. 1 Junction connector side)

Toyota RAV4. Check can bus lines for short circuit (no. 1 Junction connector side)


  1. Disconnect the a36 no. 1 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Check can bus lines for short circuit (no. 1 Junction connector - no. 2 Junction connector)

Toyota RAV4. Check can bus lines for short circuit (no. 1 Junction connector - no. 2 Junction connector)


  1. Disconnect the e68 no. 2 Junction connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.
  2. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus lines for short circuit (no. 3 Junction connector, no. 4 Junction connector side)

Toyota RAV4. Check can bus lines for short circuit (no. 3 Junction connector, no. 4 Junction connector side)


  1. Disconnect the e70 no. 3 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus lines for short circuit (no. 4 Junction connector side)

Toyota RAV4. Check can bus lines for short circuit (no. 4 Junction connector side)


  1. Disconnect the e69 no. 4 Junction connector.
  2. Measure the resistance of the dlc3.

Standard resistance




  1. Check can bus lines for short circuit (no. 3 Junction connector - no. 4 Junction connector)

Toyota RAV4. Check can bus lines for short circuit (no. 3 Junction connector - no. 4 Junction connector)


  1. Disconnect the e70 no. 3 Junction connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance



  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus lines for short circuit (no. 3 Junction connector - center airbag sensor assembly)

Toyota RAV4. Check can bus lines for short circuit (no. 3 Junction connector - center


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

Result




  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus lines for short circuit (center airbag sensor assembly)

Toyota RAV4. Check can bus lines for short circuit (center airbag sensor assembly)


  1. Disconnect the e45 center airbag sensor connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace center airbag sensor assembly

  1. Check can bus lines for short circuit (no. 1 Junction connector - ecm)

Toyota RAV4. Check can bus lines for short circuit (no. 1 Junction connector - ecm)


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

Result




  1. Check can bus lines for short circuit (no. 1 Junction connector - abs and traction actuator)

Toyota RAV4. Check can bus lines for short circuit (no. 1 Junction connector - abs and traction actuator)


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

Result




Repair or replace no. 1 Junction connector

  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus lines for short circuit (ecm)

Toyota RAV4. Check can bus lines for short circuit (ecm)


  1. Disconnect the a9 ecm connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace ecm

  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus lines for short circuit (abs and traction actuator)

Toyota RAV4. Check can bus lines for short circuit (abs and traction actuator)


  1. Disconnect the a19 abs and brake actuator (skid control ecu) connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace abs and traction actuator (skid control ecu)

  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus lines for short circuit (no. 2 Junction connector - yaw rate sensor)

Toyota RAV4. Check can bus lines for short circuit (no. 2 Junction connector - yaw rate sensor)


  1. Disconnect the e68 no. 2 Junction connector.
  2. Measure the resistance of the wire harness side connector.

Result




  1. Check can bus lines for short circuit (no. 2 Junction connector - power steering ecu)

Toyota RAV4. Check can bus lines for short circuit (no. 2 Junction connector - power steering ecu)


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

Result




  1. Check can bus lines for short circuit (no. 2 Junction connector - main body ecu)

Toyota RAV4. Check can bus lines for short circuit (no. 2 Junction connector - main body ecu)


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

Result




  1. Check can bus lines for short circuit (no. 2 Junction connector - air conditioning amplifier)

Toyota RAV4. Check can bus lines for short circuit (no. 2 Junction connector - air conditioning amplifier)


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

Result




  1. Check can bus lines for short circuit (no. 2 Junction connector - steering angle sensor)

Toyota RAV4. Check can bus lines for short circuit (no. 2 Junction connector - steering angle sensor)


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

Result




Repair or replace no. 2 Junction connector

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus lines for short circuit (yaw rate sensor)

Toyota RAV4. Check can bus lines for short circuit (yaw rate sensor)


  1. Disconnect the k6 yaw rate sensor connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace yaw rate sensor

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus lines for short circuit (power steering ecu)

Toyota RAV4. Check can bus lines for short circuit (power steering ecu)


  1. Disconnect the e18 power steering ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace power steering ecu

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus lines for short circuit (main body ecu)

Toyota RAV4. Check can bus lines for short circuit (main body ecu)


  1. Disconnect the e17 main body ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace instrument panel junction block (main body ecu)

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus lines for short circuit (air conditioning amplifier)

Toyota RAV4. Check can bus lines for short circuit (air conditioning amplifier)


  1. Disconnect the e37*1 or e36*2 air conditioning amplifier connector.

Hint:

  1. Measure the resistance of the dlc3.

Standard resistance




Replace air conditioning amplifier

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus lines for short circuit (steering angle sensor)

Toyota RAV4. Check can bus lines for short circuit (steering angle sensor)


  1. Disconnect the e11 steering sensor connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace steering angle sensor

  1. Check can bus lines for short circuit (no. 4 Junction connector - 4wd control ecu)

Toyota RAV4. Check can bus lines for short circuit (no. 4 Junction connector - 4wd control ecu)


Notice:

For vehicles without 4wd, go to "check can bus lines for short circuit (no. 4 Junction connector - combination meter ecu)".

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

Result




  1. Check can bus lines for short circuit (no. 4 Junction connector - combination meter ecu)

Toyota RAV4. Check can bus lines for short circuit (no. 4 Junction connector - combination meter ecu)


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

Result




Repair or replace no. 4 Junction connector

  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus lines for short circuit (4wd control ecu)

Toyota RAV4. Check can bus lines for short circuit (4wd control ecu)


  1. Disconnect the e57 4wd control ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace 4wd control ecu

  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus lines for short circuit (combination meter ecu)

Toyota RAV4. Check can bus lines for short circuit (combination meter ecu)


  1. Disconnect the e19 combination meter ecu connector.
  2. Measure the resistance of the dlc3.

Standard resistance




Replace combination meter ecu

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