Toyota Corolla (E120): Inspection procedure

1 Check un–lock warning switch assy

  1. Disconnect the key unlock warning switch connector.
  2.  check the continuity between the terminals of the key unlock warning switch connector, as shown in the illustration and table.

Standard:

2 Check wire harness (tvip ecu unlock warning switch)

2 Check wire harness (tvip ecu unlock warning switch)

  1. Disconnect the tvip ecu and key unlock warning switch connectors.
  2.  check the continuity between the terminals of the tvip ecu connectors and unlock warning switch connector, as shown in the illustration and table.

Standard:

3 Check wire harness (key unlock warning switch body ground)

3 Check wire harness (key unlock warning switch body ground)

  1. Disconnect the key unlock warning switch connector.
  2.  check the continuity between the terminal of the key unlock warning switch connector and the body ground, as shown in the illustration and table.

Standard:

Check and replace tvip ecu

Check and replace tvip ecu

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