Does anyone know if it is a major pain to go from auto to manual trans in a 2001 Volvo S60 T5?
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#1
CarJunkie
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Posted 04 February 2012 - 02:20 AM
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ozzimark
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Posted 04 February 2012 - 02:24 AM
Mechanically, it's as straight forward as any other manual swap, but the ECM's CAN bus makes it more than a little tricky from an electronics functionality standpoint. I think Lucky may have figured out a way around it, but I'm not certain.
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andyb5
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Posted 04 February 2012 - 02:37 AM
Quoted from Lucky's ME7 thread:
ARD - Lucky, on 17 January 2012 - 09:13 PM, said:
The purpose of this thread is to bring to light some information around the ME7 fuel system used in 1999 and later model Volvo turbocharged models.
[...]
As it relates to ME7 and manual swap. Unfortunately it's not as easy as M4.x but it can be done.
The main complication comes from the nature of how the CAN bus system works. If the TCU is removed then other modules in the CAN network that rely on TCU data may loose some functionality.
For instance cruise control. As the TCU is controlling the trans it constantly sends out info on the can network, things like trans speed, current gear selection, errors, etc.. if the TCU is removed then it's likely the cruise control won't work as other modules in the system that rely on TCU data are expecting a TCU to be there and it's not... they are unable to carry out their functions without the TCU data they've been programmed to use.
Now programming the ECU to be a manual is no problem, so long as we have the original ECU in hand. The ECU will not be relying on the TCU input so it effectively ignores it and wont' trip the CEL.
Other modules in the network will have codes for missing TCU communication but will not cause the CEL to be lit.
Additional complications: The reverse lights might not work, IIRC the Park/Nuetral switch is connected to the TCU so when you put the car into reverse with a manual trans the message normally sent to the REM to turn on the reverse lights will not be there and they wont come on. Of course you can hardwire the lights, but again this is just an example of the few issues that will need to be addressed.
The cost to develop and recode all the modules on the high speed network is unrealistic and you'd be better off sourcing all the related modules (CEM, ETM, ECU, ABS, IMMO, Keys, ETC...) from a junk yard as some have done.
[...]
As it relates to ME7 and manual swap. Unfortunately it's not as easy as M4.x but it can be done.
The main complication comes from the nature of how the CAN bus system works. If the TCU is removed then other modules in the CAN network that rely on TCU data may loose some functionality.
For instance cruise control. As the TCU is controlling the trans it constantly sends out info on the can network, things like trans speed, current gear selection, errors, etc.. if the TCU is removed then it's likely the cruise control won't work as other modules in the system that rely on TCU data are expecting a TCU to be there and it's not... they are unable to carry out their functions without the TCU data they've been programmed to use.
Now programming the ECU to be a manual is no problem, so long as we have the original ECU in hand. The ECU will not be relying on the TCU input so it effectively ignores it and wont' trip the CEL.
Other modules in the network will have codes for missing TCU communication but will not cause the CEL to be lit.
Additional complications: The reverse lights might not work, IIRC the Park/Nuetral switch is connected to the TCU so when you put the car into reverse with a manual trans the message normally sent to the REM to turn on the reverse lights will not be there and they wont come on. Of course you can hardwire the lights, but again this is just an example of the few issues that will need to be addressed.
The cost to develop and recode all the modules on the high speed network is unrealistic and you'd be better off sourcing all the related modules (CEM, ETM, ECU, ABS, IMMO, Keys, ETC...) from a junk yard as some have done.
99 V70 R. Silver/Charcoal, 151k, working on stage 0. Still waiting for mods to start....
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