Toyota Corolla (E120): Terminals of ecu

1. Inspect integration relay

  1. Disconnect the connector from the integration relay.
  2. check the continuity between each terminal of the disconnected connector and the body ground, as shown in the illustration and table.

Standard:

If the result is not as specified, the vehicle’s side may malfunction.

If the result is not as specified, the vehicle’s side may malfunction.

  1.  reconnect the connector and check the voltage between each terminal and the body ground, as shown in the illustration and table.

Standard:

If the result is not as specified, the integration relay may malfunction.

If the result is not as specified, the integration relay may malfunction.

2. Inspect instrumental panel j/b (integration relay)

  1. Disconnect the connectors ia, ib, id, if, ih and ij of the instrument panel j/b.
  2.  check the continuity between each terminal of the disconnected connectors and the body ground, as shown in the illustration and table.

Standard:

If the result is not as specified, the vehicle’s side may malfunction.

If the result is not as specified, the vehicle’s side may malfunction.

  1.  reconnect the connectors and check the voltage between each terminal and the body ground, as shown in the illustration and table.

Standard:

If the result is not as specified, the integration relay or instrument panel

If the result is not as specified, the integration relay or instrument panel j/b assembly may malfunction.

Problem symptoms table

Only wireless control function does not operate

    Share this page:

    Other materials:

    Cassette tape cannot be ejected
    Wiring diagram Wiring diagram 1 Check if radio auto–search functions properly Check if the radio auto–search function properly.  Perform the auto–research of the radio and check that the operation is normal. Standard: malfunction disappear. 2 Press ”eject” and ...

    Overhaul
    Caution: wear the gloves, because the cutting surface of the seat back frame and seat adjuster may injure your hand. Hint: tape the screwdriver tip before use when prying parts. 1. Disconnect battery negative terminal Caution: wait for 90 seconds after disconnecting the battery terminal a ...

    Glossary of sae and toyota terms
    This glossary lists all sae–j1930 terms and abbreviations used in this manual in compliance with sae recommendations, as well as their toyota equivalents. ...