Toyota RAV4 manuals

Toyota RAV4 Service Manual: Ig power supply voltage malfunction

Toyota RAV4. Ig power supply voltage malfunction


Description

The power steering ecu distinguishes the ignition switch status as on or off through the ig power source circuit.


Wiring diagram

Toyota RAV4. Ig power supply voltage malfunction


Inspection procedure

  1. Read value of intelligent tester (ig power supply)

  1. Connect the intelligent tester (with can vim) to the dlc3.
  2. Turn the ignition switch on.
  3. Select the item "ig supply" in the data list and read the value displayed on the intelligent tester.

Toyota RAV4. Read value of intelligent tester (ig power supply)



  1. Inspect fuse (ecu-ig1)

  1. Remove the ecu-ig1 fuse from the instrument panel junction block.
  2. Measure the resistance of the fuse.

Ok: below 1




  1. Check harness and connector (battery - power steering ecu)

Toyota RAV4. Check harness and connector (battery - power steering ecu)


  1. Disconnect the e18 and a1 power steering ecu connectors.
  2. Measure the voltage of the wire harness side connectors.

Standard voltage




Replace power steering ecu

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