Reference Pictures For Manual Swappers (850)

[bloc]

from looking at the wiring diagrams cruise will work as long as the car is NOT in P or N. the thing is, what tells the cruise when you are in P or N is the exact wire that tells the starter it's ok to work in P or N.

(will edit post later with pics and a description of the cruise control mod)

so here goes.

remove the cover to the fuse panel under the back drivers side corner of the hood. there will be a large black relay box in there that you can pull right out. this is your cruise computer. 101B/102E in this picture

once it is out you should have 2 colored plugs remaining that the cruise computer plugs into. on my car they were orange and brown, not sure about other years though i'd suspect it's the same.

here's what mine looked like with the computer removed

you are only removing the computer to get a reference to which color you need to look for under the fuse panel. the wire that tells the cruise computer if you have the car in P or N is a green wire with a red stripe, and on my car plugged into the bottom of the orange plug on the rearmost side of it. now remove the driver's kick panel and under there above all of the various relays you should barely have access to the bottom of the orange plug that the cruise computer sits on. i had to remove all of the relays to get clear access. mine were color coded and keyed though, so no need to keep track of where they went.

i simply clipped the green/red wire and insulated it to keep it from shorting on anything. the following picture shows the wire clipped and more importantly, what the orange and brown plugs look like from the bottom.

verified that the cruise works yesterday on the freeway.

i can email people a wiring diagram of the cruise system if they want the further assurance that i know what i'm talking about.

[bloc]

the edit didnt BUMP it

[prasamin]

i searched, can't find what year and model cars the M56H came on....anybody?

[bloc]

95 and up 850s, whether turbo or non, were M56H. 1994 turbo 850 manual was a m56H.

M56L is the same transmission with shorter first and second gear.

it came in 2 different final drives in the states, depending on model year.

93 M56L should have 3.77 final drive.

94 M56L will be 4.0. this combined with the M56L's shorter first and second gear means it is actually lower gearing off the line than a M56H. not that you'd need it.

all of this is via the v@dis program. fire away if you have any more questions, i did all of this research 2-3 weeks ago and it's fresh on my brain.

forgot to mention, i have a spreadsheet in excell of the different gear ratios from different years, with what the final ratio at the wheel will be for each one. pretty nice to compare the different years of manual and automatic transmissions.

[bobcat]

great info bloc, ive saved a copy of this page for my records.

you say you clipped the green\red wire from the cruise to the pnp up at the connector. just a thought that came to me, could you have not clipped it down at the pnp? or does that green\red wire run of to the tcu?

Thanks.

[bloc]

from spending more time looking at the wiring diagrams, i'm wondering if the wire even needs to be clipped. i never checked to see if my cruise -didnt- work, but i did read on here in a couple year old post that someone had problems with it.

if it does need to be cut, at the cruise computer seems to be the best place, because the wire goes through the central locking unit before ending at the cruise computer. not sure if this tells the central locking anything important, but without that information i was reluctant to cut it before the central locking computer.

850turbo, have you tested your cruise control out yet? if not, please do and let me know if it works without clipping the wire.

thanks

Justin

[prasamin]

95 and up 850s, whether turbo or non, were M56H. 1994 turbo 850 manual was a m56H.

M56L is the same transmission with shorter first and second gear.

it came in 2 different final drives in the states, depending on model year.

93 M56L should have 3.77 final drive.

94 M56L will be 4.0. this combined with the M56L's shorter first and second gear means it is actually lower gearing off the line than a M56H. not that you'd need it.

all of this is via the v@dis program. fire away if you have any more questions, i did all of this research 2-3 weeks ago and it's fresh on my brain.

forgot to mention, i have a spreadsheet in excell of the different gear ratios from different years, with what the final ratio at the wheel will be for each one. pretty nice to compare the different years of manual and automatic transmissions.

that's more than I needed to know, so thanks a bunch!!! :)

[850turbo]

95 and up 850s, whether turbo or non, were M56H. 1994 turbo 850 manual was a m56H.

M56L is the same transmission with shorter first and second gear.

it came in 2 different final drives in the states, depending on model year.

93 M56L should have 3.77 final drive.

94 M56L will be 4.0. this combined with the M56L's shorter first and second gear means it is actually lower gearing off the line than a M56H. not that you'd need it.

all of this is via the v@dis program. fire away if you have any more questions, i did all of this research 2-3 weeks ago and it's fresh on my brain.

forgot to mention, i have a spreadsheet in excell of the different gear ratios from different years, with what the final ratio at the wheel will be for each one. pretty nice to compare the different years of manual and automatic transmissions.

Hm... I could have sworn that the 93-95 is the M56L (built in speed sensor to tranny) and that the 96-97 is M56H(no speed sensor on tranny, its built in on the ABS) Im almost 100% positive that the 95 does not have a speedo built in on the ABS

[AnthonyR]

Hm... I could have sworn that the 93-95 is the M56L (built in speed sensor to tranny) and that the 96-97 is M56H(no speed sensor on tranny, its built in on the ABS) Im almost 100% positive that the 95 does not have a speedo built in on the ABS

That's an easy fix though. You can tap straight off the ABS sensor of your choice. splice into it and hook it up to the instrument cluster. It's what I did and it's working great (perfectly accurate speed and no ABS lights or anything.)

[bloc]

Hm... I could have sworn that the 93-95 is the M56L (built in speed sensor to tranny) and that the 96-97 is M56H(no speed sensor on tranny, its built in on the ABS) Im almost 100% positive that the 95 does not have a speedo built in on the ABS

the volvo parts program specificly says that the 94 850 turbo came with a m56H. the chart doesnt go all the way up to 1995 in the volvo parts program, but if you look at the 1995 owner's manual it states M56H. it also kindof makes sense, that the H transmission, the one with the taller first and second, would go onto a turbo engine. less need for the shorter (lower) first and second gear. you are just going to smoke the tires anyway. by 1994 their intention seemed to be moving to the 4.0:1 final drive, so the switch to the H on both NA and turbo in 1995.

with the gearing differences and the fact that the m56H and L are visually the same, i'm hedging my bet on the numerical similarity denoting that the case, bearing structure, everything is the same, aside from a couple ratios, hence the letter difference. M58 and M59 are very different trannies, for instance.

depending on what you are doing the 1993 M56L may be a better transmission. taller final drive equals better freeway mileage, but the first and second gears are shorter to make it feel the same off the line. third is when this all gets less than perfect.

[Oreo931]

nice pics! that car sure did need a wash after u were done the swapp

[850turbo]

nice pics! that car sure did need a wash after u were done the swapp

Oh yeah after 2 manual swaps out and in..... man i was ticked.

[bloc]

does your cruise control work?

[POOKDIZZLE]

Yeah im still running the auto ECU, however I think I am going to be purchasing Jross's Euro spec RICA ecu.

Thats exactly what I did, but instead of cutting off the wires it just left them hooked up. This was done just in case (god forbid) that I had to switch the car bad to Auto

Yes that is right, but I never did get to use the bearing..... couldent get it to fit. I searched on the forum and other people had the same problem.

Does your car throw a cel light now that the swap has been done becuse it's looking for shift points and they are not there???? I'm asking because I'm toying with the idea of doing the swap myself, thanks.

[bloc]

not sure about 850R, but i got a manual ecu at the same time so i didnt have that issue.

if you search on here, some people say they knew people that had zero issues with the auto ecu, no cel, no quirky habits, nothing. other people that i've actually chatted with said they had issues. cel, funny fuel cuts, etc..

knowing that my ecu looked for a shift point from the tranny to know when to cut boost, as well as a number of other signals from the tcu to the ecu, i went ahead and got a manual ecu. you can get yours reflashed for about 600 if you hurry.

there is an extensive thread on here somewhere that talks about the different signals back and forth btn the ecu and tcu. couple years old. good read though.