Toyota Tacoma manuals

Toyota Corolla Repair Manual: 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 vehicles side may malfunction.

If the result is not as specified, the vehicles 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 vehicles side may malfunction.

If the result is not as specified, the vehicles 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

How to proceed with troubleshooting
Hint: troubleshooting of the wireless door lock control system is based on the premise that the power door lock system is operating normally. Therefore, before troubleshooting the wireless ...

Only wireless control function does not operate (prepare new or normal transmitter of the same type vehicle)
...

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