I'm almost positive that the 4065's correct (I have the datasheet for it, and I double checked). It is definitely a strange circuit.
My dad thinks that it's some kind of differential amplifier setup, which it certainly looks like, although I don't know what D801 is in there for...
Search found 3 matches
- Mon Jul 30, 2007 1:39 am
- Forum: OEM EFI Hardware
- Topic: Mazda (Ford) PWM idle valve circuit from original ECU
- Replies: 3
- Views: 552
- Mon Jul 16, 2007 5:34 pm
- Forum: OEM EFI Hardware
- Topic: Mazda (Ford) PWM idle valve circuit from original ECU
- Replies: 3
- Views: 552
Mazda (Ford) PWM idle valve circuit from original ECU
I've traced the circuit for the pwm idle valve through my stock ECU, pretty much just for kicks, and I was wondering if anyone was interested in seeing the circuit diagram I made of it. Also, I'm not entiiiirely sure how it works, so if anyone could explain some of it to me, it'd be much appreciated...
- Wed Oct 05, 2005 12:41 pm
- Forum: MS-II and V2.2/V3 Main Board Assembly, Testing, and Troubleshooting
- Topic: How skilled do you have to be to build the MS?
- Replies: 22
- Views: 24756
just remember to heat both the wire and the pad and hold the heat on the pad long enough to make a good joint and you should be fine. I hadn't soldered anything in years (in fact since I was about 11 or 12, 18 now) and after a couple joints I had it down again. I recommend you have an eyeloop or mag...