Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: Abs warning light remains on

Description

If any of the following conditions are detected, the abs warning light remains on:

  1. The ecu connectors are disconnected from the skid control ecu.
  2. There is a malfunction in the skid control ecu internal circuit.
  3. There is an open or short in the wire harness between the combination meter and the skid control ecu.

Hint:

The intelligent tester may not be used when there is a malfunction in the skid control ecu.

Wiring diagram

Toyota RAV4. Wiring diagram


Inspection procedure

  1. Check can communication system

  1. Check if the can communication system dtc is output (see page ca-34).

Result




  1. Inspect skid control ecu connector

  1. Check if the skid control ecu connector is properly installed.

Ok: the skid control ecu connector is properly installed.



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

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


  1. Disconnect the a19 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




  1. Perform active test by intelligent tester (abs warning light)

  1. Select the active test, generate a control command, and then check that the abs warning light operates.

Toyota RAV4. Perform active test by intelligent tester (abs warning light)


Ok: the abs warning light is turned on or off.

Hint:

When the abs warning light remains illuminated, opens in the wire harness of the combination meters or abnormalities in the meter circuit should be considered.



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