Toyota Corolla (E120): Inspection procedure

1 Inspect ecm(+b voltage)

  1. Turn the ignition switch on.
  2.  measure the voltage between the terminals of the e4 and e6 ecm connectors.

Standard:

2 Check harness and connector(ecm – body ground)

2 Check harness and connector(ecm – body ground)

  1. Disconnect the e4 ecm connector.
  2. check the resistance between the wire harness side connectors.

Standard (check for open):

  1. Reconnect the ecm connector

3 Inspect ignition or starter switch assy

3 Inspect ignition or starter switch assy

  1. Disconnect the i10 ignition switch connector.
  2.  check for continuity between the connector terminals shown in the chart below.

  1. Reconnect the ignition switch connector.

4 Check fuse(efi fuse)

4 Check fuse(efi fuse)

  1. Remove the efi fuse from the engine room r/b.
  2.  check for continuity in the efi fuse.

    Standard: continuity

  3.  reinstall the efi fuse.

5 Inspect efi relay

5 Inspect efi relay

  1. Remove the efi relay from the engine room r/b.
  2.  check for continuity in the circuit efi relay.

Standard:

  1. Reinstall the efi fuse.

6 Check harness and connector(efi relay – ecm, efi relay – body

6 Check harness and connector(efi relay – ecm, efi relay – body ground)

  1. Check the harness and connector between the efi relay and ecm.
  1.  Remove the efi relay from the engine room r/b.
  2.  Disconnect the e6 ecm connector.
  3.  Check the resistance between the wire harness side connectors.

Standard (check for open):

Standard (check for short):

Standard (check for short):

  1. Reconnect the ecm connector.
  2.  Reinstall the efi relay.
  1.  check the harness and connector between the efi relay and body ground.
  1.  Remove the efi relay from the engine room r/b.
  2.  Check the resistance between the wire harness side connector and body ground.

Standard (check for open):

  1. Reinstall the efi relay.

Check and repair harness and connector (terminal +b of ecm – battery

Check and repair harness and connector (terminal +b of ecm – battery positive terminal)

    Share this page:

    Other materials:

    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 security indicator light Set the system in 30 seconds after filliping the security indicator to check if the alarm is triggered. 2 Check glass breakage sensor ecu (glass breakage sensor) Check the continuity and voltage of the glass breakage sensor ecu, as shown in th ...

    Using the key (vehicles without a smart key system and with a wireless remote control function)
    Releasing To release the key, press the button Folding To stow the key, press the button then fold the key. Using the mechanical key (vehicles with a smart key system) To take out the mechanical key, slide the release button and take the key out. The mechanical key can only be inserted in o ...