I've been having trouble with my gf's '06 Acura RSX, no crank and no start. I just replaced the battery even though I'm sure it was good (it was 5 years old anyhow and wanted to be confident). I've tested that the power lead to the starter motor is getting a full 12v and the lead to the starter solenoid is good. I also took the starter off and had it tested, twice. It's good. The starter relay in the fuse box under the hood appears to be good - I can hear it click with the ignition. I'm assuming that since the lead to the starter solenoid is good and is receiving a full 12v when the ignition is turned on that both the parking and reverse sensors are good. What's next?