DIY - How to remove or insert a pin on the ECM Connector A21

[CTScott]

This DIY is primarily for those needing to know how to add the pin to position 40 of the ECM connector A21 for the DIY cruise control on 2006-2008 Yaris.

Note: It is always a good idea to disconnect the battery when working with the ECM wiring.


A. Release the ECM Connector.

1. Push the release button on the end of the connector latch with your fingertip. You will feel a slight click and will then be able to lift the arm:
Remove Connector - 1.jpg

2. Lift the latch arm from horizontal to vertical. It will move easily at first, then will require a bit more force as you near the vertical position:
Remove Connector - 2.jpg

3. As the latch arm nears the vertical position, the connector will lift slightly off of the ECM:
Remove Connector - 3.jpg

4. You can now remove the connector to work on it. To obtain full access to the pins, carefully snip the cable tie from the rubber wire protector and remove it.


B. Remove a plug

1. To remove a sealing plug, insert a stiff wire (paper clip, sewing needle, etc.) into the hole on the ECM side of the connector.Pin 40 - Plug still in.jpg

2. Push the object and the plug will begin to push out of the wire side of the connector.
Pin 40 - Plug pushing out.jpg

3. Once the plug is out, you are ready to insert a terminal in its place,
Pin 40 - Plug out.jpg