Toyota RAV4 manuals

Toyota RAV4 Service Manual: Short to b+ in can bus line

Description

There may be a short circuit between the can bus line and +b when there is resistance between terminals 6 (canh) and 16 (bat) or terminals 14 (canl) and 16 (bat) of the dlc3.

Toyota RAV4. Short to b+ in can bus line


Wiring diagram

Toyota RAV4. Short to b+ in can bus line


Toyota RAV4. Short to b+ in 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 line for short to +b (dlc3 branch wire)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (no. 1 Junction connector side)

Toyota RAV4. Check can bus line for short to +b (no. 1 Junction connector side)


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

Standard resistance




  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. check can bus line for short to +b (no. 3 junction connector, no. 4 junction connector side)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (no. 4 Junction connector side)

Toyota RAV4. Check can bus line for short to +b (no. 4 Junction connector side)


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

Standard resistance




  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus line for short to +b (no. 3 Junction connector - center airbag sensor assembly)

Toyota RAV4. Check can bus line for short to +b (no. 3 Junction connector - center airbag sensor assembly)


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

Standard resistance



  1. Connect connector

  1. Reconnect the e70 no. 3 Junction connector.


  1. Check can bus line for short to +b (center airbag sensor assembly)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (no. 1 Junction connector - ecm)

Toyota RAV4. Check can bus line for short to +b (no. 1 Junction connector - ecm)


  1. Disconnect the a36 no. 1 Junction connector.
  2. Measure the resistance of the wire harness side connectors.

Standard resistance




  1. Check can bus line for short to +b (no. 1 Junction connector - abs and traction actuator)

Toyota RAV4. Check can bus line for short to +b (no. 1 Junction connector - abs and traction actuator)


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

Standard resistance




Repair or replace can main wire and connector (no. 1 Junction connector - no.

2 Junction connector)

  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can bus line for short to +b (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 line for short to +b (abs and traction actuator)

Toyota RAV4. Check can bus line for short to +b (abs and traction actuator)


  1. Disconnect the a19 abs and traction 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 line for short to +b (no. 2 Junction connector - yaw rate sensor)

Toyota RAV4. Check can bus line for short to +b (no. 2 Junction connector - yaw rate sensor)


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

Standard resistance




  1. Check can bus line for short to +b (no. 2 Junction connector - power steering ecu)

Toyota RAV4. Check can bus line for short to +b (no. 2 Junction connector - power steering ecu)


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

Standard resistance




  1. Check can bus line for short to +b (no. 2 Junction connector - main body ecu)

Toyota RAV4. Check can bus line for short to +b (no. 2 Junction connector - main body ecu)


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

Standard resistance




  1. Check can bus line for short to +b (no. 2 Junction connector - air conditioning amplifier)

Toyota RAV4. Check can bus line for short to +b (no. 2 Junction connector - air conditioning amplifier)


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

Standard resistance




  1. Check can bus line for short to +b (no. 2 Junction connector - steering angle sensor)

Toyota RAV4. Check can bus line for short to +b (no. 2 Junction connector - steering angle sensor)


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

Standard resistance




Repair or replace can main wire and connector (no. 2 Junction connector - no.

3 Junction connector)

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can bus line for short to +b (yaw rate sensor)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (power steering ecu)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (main body ecu)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (air conditioning amplifier)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (steering angle sensor)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (no. 4 Junction connector - 4wd control ecu)

Notice:

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

Toyota RAV4. Check can bus line for short to +b (no. 4 Junction connector - 4wd control ecu)


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

Standard resistance




  1. Check can bus line for short to +b (no. 4 Junction connector - combination meter ecu)

Toyota RAV4. Check can bus line for short to +b (no. 4 Junction connector - combination meter ecu)


  1. measure the resistance of the wire harness side connectors.

Standard resistance




  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can bus line for short to +b (4wd control ecu)

Toyota RAV4. Check can bus line for short to +b (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 line for short to +b (combination meter ecu)

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