DigitalBuddha

That's fantastic! Thanks so much. Any chance you have a standard pioneer diagram as well, would you?

I am trying to replace my wife's factory navigation with an aftermarket unit. I bought and installed a non navi climate control and I also bought the best sonic harness stupidly believing that since the navi unit was by pioneer, it would have the same plugs as the non navi unit. So know I could really use a wiring diagram for the navigation plugs so I can wore up the new stereo myself. I have the Toyota repair manual in PDF and can't find a schematic Thanks in advance

Wow, you're not going to believe it but it's fixed! It took all my cunning and acute sense of perception. We purchased the car over a year ago and within 2 days my wife lost the lone key. We had a locksmith come out and make us 2 new keys. Of course, you know where this is going. My wife found the original key in the bottom of a purse and tried using it. Long story short, I gave the mechanic one of the new keys, which is why it ran just fine for him. So, if you've found this post via search and have a crank, no spark...try using another key

unfortunately, i dont have an oscilloscope or any obdII software/dongle, etc. i was just out at the car again and followed these steps: Pulled plug and again tried to see if there was spark (none) Checked the resistance (again) at crank and camshaft sensors (within spec) With ignition switch on, checked for voltage at the coil (there was) I'm not a fan of the shotgun approach either, but since the car was already towed to the garage and it seemed to be fine again, I figured why not replace something simple that might clear up the intermittent problem. Oh well! So now I am going to trace to see if there is a signal being sent via the ECU. Does that seem to be the most logical choice? Where is the best place for me to test for signal along the IGT from the ECU? Can you give me insight into anti-theft? Thanks for the welcome!

My wife's LS400 suddenly wouldn't start the other day. Cramked just fine and strong but no spark getting to the pluigs. Not getting any codes. Towed it to the mechanic (certified Lexus independant shop) and of course it started right up for him. We discussed the issue and agreed to replace the crankshaft position sensor. Drove home just fine and the next day, same thing. Won't start, no spark. I checked resistance on the camshaft sensor and it is within spec (1400 ohm). I'm at a loss as to what to look for next. I would rather not pay for another tow and only to have the intermittent problem not reveal itself again. Any suggestions on what to do next?