Toyota Corolla (E120): Circuit description

The door key lock and unlock switch is built in the door lock motor.

Wiring diagram

Inspection procedure

Inspection procedure

1 Check door lock

2 Check wire harness (tvip ecu  door lock)

2 Check wire harness (tvip ecu  door lock)

  1. Disconnect the tvip ecu and door lock connectors.
  2.  check the continuity between the terminals of the tvip ecu and door lock connectors, as shown in the illustration and table.

Standard:

3 Check wire harness (door lock  body ground)

3 Check wire harness (door lock  body ground)

  1. Disconnect the door lock connector.
  2.  check the continuity between the terminal of the door lock connector and the body ground, as shown in the illustration and table.

Standard:

Proceed to next circuit inspection shown on problem symptoms table

Proceed to next circuit inspection shown on problem symptoms table

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