Toyota Corolla (E120): Inspection procedure

Hint

: read freeze frame data using the hand-held tester or the obd ii scan tool. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, it is useful for determining whether the vehicle was running or stopped, the engine was warmed up or not, the air–fuel ratio was lean or rich, etc. At the time of the malfunction.

1 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.

2 Inspect ecm(batt voltage)

2 Inspect ecm(batt voltage)

  1. Measure the voltage between the terminals of the e4 and e6 ecm connectors.

Standard:

3 Check harness and connector(ecm – efi fuse, efi fuse – battery)

3 Check harness and connector(ecm – efi fuse, efi fuse – battery)

  1. Check the harness and the connector between the efi fuse and ecm.
  1.  Remove the efi fuse 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 fuse.
  1.  check the harness and the connector between the efi fuse and battery.
  1.  Remove the efi fuse from the engine room r/b.
  2.  Disconnect the battery positive terminal.
  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 battery positive terminal.
  2.  Reinstall the efi fuse.

Check and replace engine room relay block assy

Check and replace engine room relay block assy

    Share this page:

    Other materials:

    If your vehicle has to be stopped in an emergency
    Only in an emergency, such as if it becomes impossible to stop the vehicle in the normal way, stop the vehicle using the following procedure: Stopping the vehicle 1. Steadily step on the brake pedal with both feet and firmly depress it. Do not pump the brake pedal repeatedly as this will increase t ...

    Diagnostics
    Preparation Sst 09816–30010 Oil pressure switch socket Sfi system 09843–18040 Diagnosis check wire no.2 Sfi system supplemental restraint system Recomended tools 09082–00040 Toyota electrical tester Sfi system supplemen ...

    Inspection procedure
    1 Check source voltage Measure the voltage of the battery. Ok: voltage: 10 – 14 v 2 Check air bag sensor assy center Disconnect the negative (–) terminal cable from the battery, and wait at least for 90 seconds.  disconnect the connectors from the airbag sensor assy ...