DIY Cruise Control on 07-08 Yaris (step by step) - Toyota Yaris Forums

goat1of2 · 03-09-2010, 10:15 AM

And yet *another* new Yaris owner gives this a try......

It seems that y'all are saying that we should disconnect the battery before pulling off ECM connector A21. Yet, won't I need the battery connected to check if 12V is present at pin 40? That's right, I've never messed with the electronics in a car before.

Also, I'm looking at the document so kindly provided by Vince87 and I cannot for the life of me find Connector D3 either. I have a very late model 2008 and wanted to make sure that the wires I need aren't already in the cabin. There's a whole passel of connectors under that dash, most of which I cannot see because of all the plastic covers. Do I need to remove some of them?

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03-09-2010, 10:15 AM	#11
goat1of2 Drives: 2008 Yaris LB Auto 3-door Join Date: Jun 2009 Location: USA Posts: 9	And yet another new Yaris owner gives this a try...... It seems that y'all are saying that we should disconnect the battery before pulling off ECM connector A21. Yet, won't I need the battery connected to check if 12V is present at pin 40? That's right, I've never messed with the electronics in a car before. Also, I'm looking at the document so kindly provided by Vince87 and I cannot for the life of me find Connector D3 either. I have a very late model 2008 and wanted to make sure that the wires I need aren't already in the cabin. There's a whole passel of connectors under that dash, most of which I cannot see because of all the plastic covers. Do I need to remove some of them?