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:

    Inspection
    1. Fuel injector assy Inspect injector resistance.  Using an ohmmeter,measure the resistance between the terminals. Resistance: 13.4 – 14.2 Ω at 20 c (68 f) Inspect injector inspection Caution: keep injector clear of sparks during the test.  Purch ...

    Back up lamp assy lh
    Replacement 1. Remove back up lamp assy lh Remove the service hole cover.  remove the 2 nuts and disconnect the connector. Using a mouldingremover, remove the 2 clips and back up light assy lh. 2. Install back up lamp assy lh Set the 2 clips on the back up ligh ...

    Customizing vehicle features
    It is possible to customize the language and Eco Driving Indicator Light settings using the “DISP” switch. When customizing vehicle features, ensure that the vehicle is parked in a safe place with the shift the shift lever to P (continuously variable transmission) or N (manual transmissio ...