Check voltage circuits at the starter relay. Terminal 1 goes hot with the key in the crank position. Terminal 2 is hot all the time. Ground for the coil side of starter relay has to do with security system, I can't rule that out. Any testing at the relay, make sure tranny is in park or neutral and the e-brake is set.
![https://www.2carpros.com/forum/automotive_pictures/170934_lexus_starter_circuit_1.jpg](https://www.2carpros.com/forum/automotive_pictures/170934_lexus_starter_circuit_1.jpg)
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Sunday, October 17th, 2010 AT 1:49 PM