Toyota Corolla (E120): Inspection procedure

Hint

: start the inspection from step 1 in case of using the hand–held tester and start from step 2 in case of not using hand–held tester.

1 Inspect brake actuator assy

  1. Select the datalist mode on the hand–held tester.
  2.  check the operation sound of the abs pump motor when operating it with the hand–held tester.

    Ok: the operation sound of the abs pump motor should be heard.

2 Inspect skid control ecu terminal voltage(+bm terminal voltage)

2 Inspect skid control ecu terminal voltage(+bm terminal voltage)

  1. Disconnect the skid control ecu connector.
  2.  measure the voltage between terminal +bm (24) and gnd (23) of skid control ecu harness side connector.

    Ok: the operation sound of the abs pump motor should be heard.

Replace brake actuator assy

Replace brake actuator assy

    Share this page:

    Other materials:

    Circuit description
    When the ignition switch is turned on, battery positive voltage is applied to the coilwhich closes the contacts of the efi main relay (marked: efi) and supplies power to terminal +b of the ecm. This signal causes current to flow to the coil, closing the contacts of the efi relay and supplyin ...

    Monitor description
    The battery supplies electricity to the ecm even when the ignition switch is off. This electricity allows the ecm store data such as dtc history, freeze frame data, fuel trim values, and other data. If the battery voltage falls below a minimum level, the ecm will conclude that there is a fault ...

    Inspection procedure
    1 Check connector Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  check the connection of the combination meter connector and the airbag sensor assy center connectors. Ok: the connectors are connected. 2 Check combination ...