Toyota RAV4 manuals

Toyota RAV4 Service Manual: Open in can main wire

Description

There may be an open circuit in the can main wire and / or the dlc3 branch wire when the resistance between terminals 6 (canh) and 14 (canl) of the dlc3 is 69 ù or more.

Toyota RAV4. Open in can main wire


Wiring diagram

Toyota RAV4. Open in can main wire


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 dlc3

Toyota RAV4. Check dlc3


  1. Measure the resistance of the dlc3.

Standard resistance


Notice:

When the measured value is 132 ù or more and a can communication system diagnostic trouble code is output, there may be a fault besides disconnection of the dlc3 branch wire. For that reason, troubleshooting should be performed again from "how to proceed with troubleshooting" (see page ca-8) after repairing the trouble area.



  1. Check can main wire for disconnection (no. 2 Junction connector - ecm)

Toyota RAV4. Check can main wire for disconnection (no. 2 Junction connector - ecm)


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

Standard resistance




  1. Check can main wire for disconnection (no. 2 Junction connector - combination meter ecu)

Toyota RAV4. Check can main wire for disconnection (no. 2 Junction connector - combination meter ecu)


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

Standard resistance




Replace no. 2 Junction connector

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can main wire for disconnection (no. 1 Junction connector - ecm)

Toyota RAV4. Check can main wire for disconnection (no. 1 Junction connector - ecm)


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

Standard resistance




  1. Check can main wire for disconnection (no. 1 Junction connector - no. 2 Junction connector)

Toyota RAV4. Check can main wire for disconnection (no. 1 Junction connector - no. 2 Junction connector)


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

Standard resistance



Replace no. 1 Junction connector

  1. Connect connector

  1. Reconnect the a36 no. 1 Junction connector.


  1. Check can main wire for disconnection (ecm - no. 1 Junction connector)

Toyota RAV4. Check can main wire for disconnection (ecm - no. 1 Junction connector)


  1. Disconnect the a9 ecm connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




Replace ecm

  1. Connect connector

  1. Reconnect the e68 no. 2 Junction connector.


  1. Check can main wire for disconnection (no. 4 Junction connector - no. 2 Junction connector)

Toyota RAV4. Check can main wire for disconnection (no. 4 Junction connector - no. 2 Junction connector)


  1. Disconnect the e69 no. 4 Junction connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




  1. Check can main wire for disconnection (no. 4 Junction connector - combination meter)

Toyota RAV4. Check can main wire for disconnection (no. 4 Junction connector - combination meter)


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

Standard resistance




Replace no. 4 Junction connector

  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can main bus line for disconnection (combination meter ecu - no. 4 Junction connector)

Toyota RAV4. Check can main bus line for disconnection (combination meter ecu - no. 4 Junction connector)


  1. Disconnect the e19 combination meter ecu connector.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




Replace combination meter assembly (combination meter ecu)

  1. Connect connector

  1. Reconnect the e69 no. 4 Junction connector.


  1. Check can main wire for disconnection (no. 2 Junction connector - no. 3 Junction connector)

Toyota RAV4. Check can main wire for disconnection (no. 2 Junction connector - no. 3


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

Standard resistance




  1. Check can main wire for disconnection (no. 3 Junction connector - no. 4 Junction connector)

Toyota RAV4. Check can main wire for disconnection (no. 3 Junction connector - no. 4 Junction connector)


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

Standard resistance




Replace no. 3 Junction connector

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