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Unlug the TPS and short pins E2 and IDL on the connector. If the code disappears the TPS/TB is bad or out of adjustment. If the code remains the problem is TPS wiring or related to one of the other causes (AC or neutral start switch). Based on the high idle I'm gonna say your throttle body is...

How many ways are there to turn the key?

I know the feeling...

If it were me I'd be spending less time screwing with the idle motor and more asking myself what's odd about the above symptom...

First you say there's no reference, then you say there's reference only when cranking. Now there's no +B? Without +B there can be no reference, even when cranking. Nor will the MIL or anything else in the EFI system work.

It is. As are most Toyotas.

They're not solenoids. They're pressure switches and no, they can't cause a 51. Read what I posted above. Only the amplifier is connected to the ECU and only the amplifier can cause a 51.

I don't post in a great many threads where I can help. From here on yours will be among them. Since I've been bit enough trying to help those with neither the skills nor even common sense to help themselves I'll continue to use whatever methods I deem fit before trying. Don't like it? Too...

The code 51 AC thing is not hard to fathom. The climate control head sends a signal to the AC amplifier. The AC amplifier turns on the compressor clutch and at the same time sends an idle up signal to the ECU. It's this signal that is used by the diag system to generate 51. The entire point of...

Removal of any refrigeration component is irrelevant to code 51 generation. It's not for sure the culprit unless: 1) The AC button is illuminated. 2) The AC amplifier you left behind in the dash is bad. 3) The wiring is screwed up.

MIL on with key on? As per your other post did you determine if the reference was shorted? Because if it is the car will be dead in the water until that's fixed...

Yep, there is. On my car I replaced it with a petcock.

Yea, I never try around here. But when someone can't even tell if there's power on the tail light fuse there isn't much I can do. Instead of spanking me for it why don't you try helping him...

Yes, really. In fact completely removing the AC system will *prevent* it from generating a 51.

I wish you'd quit saying this. It's wrong.

I have no idea. I just wanted to confirm your level of electrical prowess before investing more time.

Duct tape? And have you tried not being super pissed off?

Put a spigot on it ;) Iirc it was made to also use on RHD models...

http://tinyurl.com/3soarg Lower right corner. Iirc that's the latest number but the dealer will know. I used to buy 'em two at a time and kept the second one in the back...

^ It doesn't get any better than that...