I recently noticed that the ECT swtich on the center console has stopped working or at least the little indicator light on the dash is out. My 4runner has 230k on it and is need of a tuneup so it's hard to tell from driving it whether the switch is really working or not. I pulled it out and saw that there are 4 terminals on the back, so no telling which leads to cross to test it. Is the ECT indicator supposed to light on the dash with the oil amp and other indicators when you turn the key to acc? Would that be a way of at least knowing if it is just the indicator that is out? Any one else have this problem or know how to tell for sure? Thanks!