I was reading through the big'ol section F of the FSM, and noticed some odd numbers:



They have the Turbo Control, Charge Control, etc listed as switching over at 5500rpm. This is clearly incorrect. Was this changed in the '95 manual? Or was an addendum issued?

Dave

 

Maybe that means secondary comes on at 4250rpm on an AT.

 

Which is what I was thinking also - since the autos redline a little lower than the manuals, IIRC.

Dave

 

I am aware of two print runs for the series-6 (92-95). First in 92 when released & second in 94.

I know the series-7 (96-98) version was simply memo's sent to dealers & they had to staple the extra pages into the original books.

The series-8 (99-02) had an update book that really wasn't all that comprehensive like the FSM was.

Can't comment on the series-7 version but can say that the series-8 cars change around the 4500rpm area from a "seat-of-your-pants" perspective......

 

They could be just using those rpm numbers to ensure that any of those solenoids tested would be fully activated.

 

^ agreed. I'll look in my 95 manual, when I get home

 

I think that's not the case, since the page is from the section used to test the ECU electrical inputs/outputs. So the mechanical delay would not be a factor.

Dubulup, it would good to confirm the data from a later printing, thanks.

Dave

 

exactly...you don't want some Mazduh mechanic testing something at 4500rpms, at switching point to see if its working properly...(frankly I don't see how you test this...on a dyno maybe) so, you tell him to test it 1000rpms after the solenoid should be switched.

Of course, I have no idea...I deal with mechanics and standards/processes/procedures in aerospace, and rule #1 make it as easy to test as possible. idiot proof everything! (then wait for bigger idiots and revise, haha)

but then again...some of the other solenoids look right on like the precontrol

 

It could just be a mistake. Maybe some engineer wrote down the values before a revision was made to the control system, and nobody thought to update it before the documentation people got their hands on it. Hard to say without having worked for Mazda in the early 90s...

FWIW, project management has come a long way in the last 15 years.

 

It's also highly possible that its just a typo... one digit over on the ole' keyboard....

~Kris

 

exactly the same but on a different page

strange...I retract my previous statement, this is giving the switching data, not testing data.

Maybe they orginally thought the secondary would kick in at 5.5k, and found that the primary ran out of breath before that, due to US pre-cat restrictions or something similar.

OR just a bad translation, haha!

 

This test is for low load operation, with no boost. transition is delayed until 5500 rpm.

 

makes sense.