For the engine to not shut off with the key both fuel and ignition would have to be hot wired. The first thing you should do is throw that Haynes manual in the trash and stick with factory documentation. Rather than try and figure out what's wrong with the wiring it's often easier to just return...
Never said any of it was dangerous. Just that what works and what's right are different things and the former always comes from those who know enough to be, err, dangerous...
I hear ya. I'm the same way. When even the littlest thing broke it got fixed immediately. Not only was it a matter of pride but I paid a crap load of money for the car and everything on it.
If you have to you can probably get a new box off someone here or ebay. I'm not convinced that's the...
Have you done all the flowcharts? Yes, hardwire configure the inputs the box needs to operate. Do it in the car or on the bench. All the switches come off easy enough. Rig something up for SPD or use a signal generator. Have you scoped SPD in the car? Just because the waveform is good at the TEM...
Continuity? Dummy the inputs. If it doesn't work the box is tango uniform. Simple as that. As pointed out I do have factory CC documentation but even though it describes in depth how the system works it's not going to be of any help.
Coming out of nowhere is what shorts do. Jumper the fuse with the biggest wire you have and it'll show itself (kidding...don't do that).
Try taking the advice in that other thread and use a lamp in place of the fuse. Or disconnect the battery and use your meter on ohms across the load side of...
Any B codes? Fwiw no indication of speed sensor in diag mode can be caused by any cancel input being true. Course, it'll also prevent CC operation. Make sure none are.
Uh, if you think B/Y is ground you probably shouldn't be messing with this stuff.
B/Y is ignition (IG) switched 12 volts for powering the IC regulator which in turn controls the field winding.
Y/G is the warning lamp (L). Unlike many older cars failure of the lamp in this system will...
Look above your sun visor. Should be a sticker. Iirc for removal it's front first than back. Reverse to install. Makes sense if you think about it.
The roof can be adjusted if needed:
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=BO&P=44
The real question is how should...
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