Originally posted by diesekte
View Post
Announcement
Collapse
No announcement yet.
E30 S54 Swap AC signal input to DME
Collapse
X
-
I sent a pm and am waiting for a response also - any way to test the module to ensure it is giving the DME a proper signal through CANBUS?Brian
Used BMW Parts!!
Comment
-
Originally posted by M3Driver View PostI sent a pm and am waiting for a response also - any way to test the module to ensure it is giving the DME a proper signal through CANBUS?
The easiest CAN test would be the CEL. Do you have it hooked up? If so, it should be on when the key is turned to run without starting the engine.
Comment
-
I have another thread in this subforum about my car throwing codes after just sitting with battery disconnected for a few months which obviously shouldn't really cause any issues. The only thing I changed in this time was adding the CAN box. The car now drives terribly (no power, sluggish, etc) and I now get these codes:
P0117 - power train, engine coolant temp circuit low input
P0012 - power train, camshaft position actuator A - bank 1 - timing over retarded
P0340 - power train, camshaft position sensor A - bank 1 circuit malfunction
C2500 - chassis
P1700 - power train
The cam sensor has less than 3k miles on it and I never messed with the timing which was known to be good beforehand.
Any insight about the CAN box potentially causing these? The P0117 and C2500 code shouldn't even exist on an S54 E30. I had the ECU tuned by Markert so it should be good, and ended up sending it back to them so they can hopefully troubleshoot.
Comment
-
Originally posted by diesekte View PostI have another thread in this subforum about my car throwing codes after just sitting with battery disconnected for a few months which obviously shouldn't really cause any issues. The only thing I changed in this time was adding the CAN box. The car now drives terribly (no power, sluggish, etc) and I now get these codes:
P0117 - power train, engine coolant temp circuit low input
P0012 - power train, camshaft position actuator A - bank 1 - timing over retarded
P0340 - power train, camshaft position sensor A - bank 1 circuit malfunction
C2500 - chassis
P1700 - power train
The cam sensor has less than 3k miles on it and I never messed with the timing which was known to be good beforehand.
Any insight about the CAN box potentially causing these? The P0117 and C2500 code shouldn't even exist on an S54 E30. I had the ECU tuned by Markert so it should be good, and ended up sending it back to them so they can hopefully troubleshoot.
Comment
-
Does anyone use pin 7 (gray)? Cleaning up my wiring and it doesn't make sense. I have the E36 style pressure switch as I am converted to r134, and I have to have a jumper wire between the two wires coming off of it or my compressor doesn't cycle on.
Is there a way to hook this up where I have the can controller controlling the AC/ECU stuff, as well as running my main electric (not aux) fan off the yellow wire wired to a second relay separate from the AC relay (I assume you need separate ones) without using the E46 pressure switch and fan controller or no?
Currently I have a standard parts store relay controlling my main fan that uses one of those push through radiator snap switches on 185 off 165. It is wired like:
30 constant 12v
86 ground
85 snap switch and AC clutch (so AC on will override and cycle fan regardless of temp)
87 fan motor
The above configuration has lead to a rats nest of wires by the compressor I would like to simplify. I can't seem to find any instructions for E30 using an E36 pressure switch. If you wire it like a "regular" E30 the AC doesn't work.
Additionally in one of the previous posts, Garry said "The relay will not be connected to the CAN interface as it is the DME's job to control the compressor clutch via X6004 pin 30."
However, X6004 pin 30 on all S54 up to 2004 at least is for "signal leakage diagnosis pump"/diagnostic module, fuel tank leakage.Last edited by diesekte; 11-12-2017, 04:48 PM.
Comment
-
Originally posted by diesekte View PostDoes anyone use pin 7 (gray)? Cleaning up my wiring and it doesn't make sense. I have the E36 style pressure switch as I am converted to r134, and I have to have a jumper wire between the two wires coming off of it or my compressor doesn't cycle on.
Originally posted by diesekte View PostIs there a way to hook this up where I have the can controller controlling the AC/ECU stuff, as well as running my main electric (not aux) fan off the yellow wire wired to a second relay separate from the AC relay (I assume you need separate ones) without using the E46 pressure switch and fan controller or no?
Originally posted by diesekte View PostI can't seem to find any instructions for E30 using an E36 pressure switch. If you wire it like a "regular" E30 the AC doesn't work.
Originally posted by diesekte View PostAdditionally in one of the previous posts, Garry said "The relay will not be connected to the CAN interface as it is the DME's job to control the compressor clutch via X6004 pin 30."
However, X6004 pin 30 on all S54 up to 2004 at least is for "signal leakage diagnosis pump"/diagnostic module, fuel tank leakage.
Comment
-
Does anyone use the CAN board to also control their main engine (not aux) electric fan? I need instructions on how to set up a separate relay to do so.
Would it be:
30: 12v constant
86: ground
85: CAN pin 9 (yellow)
87: fan
Or would it be:
30: 12v constant
86: CAN pin 9 (yellow)
85: 12v switched
87: fan
I am guessing it is the second way bc previously when I asked about setting this relay up for main fan control, Garry said: "the CAN board will provide ground for a relay on that pin."
I am also confused why on the official instruction PDF for the CAN board, it says to wire the AC relay with pin 86 and pin 30 both connected to 12v switched. Shouldn't one be to 12v constant??? I mean it explicitly says to connect one of the pins to 12v constant and one to 12 switched in reply #118 (by Garry) in this thread.
Additionally, the (current?) official PDF instructions say for the AC relay to be wired as:
86: 12v switched
85: x6004 pin 29
30: 12v switched
87: AC compressor
However, earlier in this thread someone asked Garry if it should be:
Pin 30 = switched power
Pin 85 = switched power
Pin 86 = DME ground (pin 29 on x60004)
Pin 87 = Compressor clutch
Which is obviously different, and he said that this was correct. So which one is it???
In regards to the c110 referenced elsewhere in this thread (the E30 body side wire that plugged into the compressor), does the green CAN board pin 4 plug into that only, to the compressor only, or does it just splice in so all 3 things are connected? What EXACTLY does the CAN board pin 4 (green) connect to? The instructions say AC compressor, but they also say the added AC relay pin 87 should be connected to the compressor...so is it both? This doesn't make any sense.
I'm reaching out to anyone out there that has any idea or can post their setup. Throughout this entire ordeal I have not gotten timely replies to PMs and only get on average 1 or 2 of the multiple questions I ask answered or half answered.
While I did have some stalling issues before, this CAN board has been a huge mistake tbh as it has done nothing but cost me $250 and tons of hours of essentially solo troubleshooting.
This should've been an afternoon install AT BEST and has turned into many months of frustration and uncertainty because honestly the instructions are all over the place, my board came pinned incorrectly, and the support has been lacking. I want to sell my E30 and this is actually the only thing holding me up.Last edited by diesekte; 02-18-2018, 08:52 PM.
Comment
-
Note to anyone else reading: he has the older board with the white connector and its pinout is different than the newer black/MQS one.
Originally posted by diesekte View PostDoes anyone use the CAN board to also control their main engine (not aux) electric fan? I need instructions on how to set up a separate relay to do so.
Would it be:
30: 12v constant
86: ground
85: CAN pin 9 (yellow)
87: fan
Or would it be:
30: 12v constant
86: CAN pin 9 (yellow)
85: 12v switched
87: fan
I am guessing it is the second way bc previously when I asked about setting this relay up for main fan control, Garry said: "the CAN board will provide ground for a relay on that pin."
I am also confused why on the official instruction PDF for the CAN board, it says to wire the AC relay with pin 86 and pin 30 both connected to 12v switched. Shouldn't one be to 12v constant??? I mean it explicitly says to connect one of the pins to 12v constant and one to 12 switched in reply #118 (by Garry) in this thread.
Originally posted by diesekte View Post
Additionally, the (current?) official PDF instructions say for the AC relay to be wired as:
86: 12v switched
85: x6004 pin 29
30: 12v switched
87: AC compressor
However, earlier in this thread someone asked Garry if it should be:
Pin 30 = switched power
Pin 85 = switched power
Pin 86 = DME ground (pin 29 on x60004)
Pin 87 = Compressor clutch
Which is obviously different, and he said that this was correct. So which one is it???
Originally posted by diesekte View Post
In regards to the c110 referenced elsewhere in this thread (the E30 body side wire that plugged into the compressor), does the green CAN board pin 4 plug into that only, to the compressor only, or does it just splice in so all 3 things are connected? What EXACTLY does the CAN board pin 4 (green) connect to? The instructions say AC compressor, but they also say the added AC relay pin 87 should be connected to the compressor...so is it both? This doesn't make any sense.
Originally posted by diesekte View Post
I'm reaching out to anyone out there that has any idea or can post their setup. Throughout this entire ordeal I have not gotten timely replies to PMs and only get on average 1 or 2 of the multiple questions I ask answered or half answered.
While I did have some stalling issues before, this CAN board has been a huge mistake tbh as it has done nothing but cost me $250 and tons of hours of essentially solo troubleshooting.
This should've been an afternoon install AT BEST and has turned into many months of frustration and uncertainty because honestly the instructions are all over the place, my board came pinned incorrectly, and the support has been lacking. I want to sell my E30 and this is actually the only thing holding me up.
Update: just read your PM and see other questions, will reply now.
Comment
-
Originally posted by diesekte View PostDoes anyone use the CAN board to also control their main engine (not aux) electric fan? I need instructions on how to set up a separate relay to do so.
Would it be:
30: 12v constant
86: ground
85: CAN pin 9 (yellow)
87: fan
Or would it be:
30: 12v constant
86: CAN pin 9 (yellow)
85: 12v switched
87: fan
I am guessing it is the second way bc previously when I asked about setting this relay up for main fan control, Garry said: "the CAN board will provide ground for a relay on that pin."
I am also confused why on the official instruction PDF for the CAN board, it says to wire the AC relay with pin 86 and pin 30 both connected to 12v switched. Shouldn't one be to 12v constant??? I mean it explicitly says to connect one of the pins to 12v constant and one to 12 switched in reply #118 (by Garry) in this thread.
Additionally, the (current?) official PDF instructions say for the AC relay to be wired as:
86: 12v switched
85: x6004 pin 29
30: 12v switched
87: AC compressor
However, earlier in this thread someone asked Garry if it should be:
Pin 30 = switched power
Pin 85 = switched power
Pin 86 = DME ground (pin 29 on x60004)
Pin 87 = Compressor clutch
Which is obviously different, and he said that this was correct. So which one is it???
In regards to the c110 referenced elsewhere in this thread (the E30 body side wire that plugged into the compressor), does the green CAN board pin 4 plug into that only, to the compressor only, or does it just splice in so all 3 things are connected? What EXACTLY does the CAN board pin 4 (green) connect to? The instructions say AC compressor, but they also say the added AC relay pin 87 should be connected to the compressor...so is it both? This doesn't make any sense.
I'm reaching out to anyone out there that has any idea or can post their setup. Throughout this entire ordeal I have not gotten timely replies to PMs and only get on average 1 or 2 of the multiple questions I ask answered or half answered.
While I did have some stalling issues before, this CAN board has been a huge mistake tbh as it has done nothing but cost me $250 and tons of hours of essentially solo troubleshooting.
This should've been an afternoon install AT BEST and has turned into many months of frustration and uncertainty because honestly the instructions are all over the place, my board came pinned incorrectly, and the support has been lacking. I want to sell my E30 and this is actually the only thing holding me up.
Comment
-
Originally posted by nando View PostWhy go through all that trouble? the DME can control the fan directly. All you need is the fan relay which can be cut off any E46 or similar fan. It takes a PWM signal from the DME, you supply it power/ground and runs the fan based on a map which can easily be altered to suit your needs.Last edited by gpeterson; 02-20-2018, 01:38 PM.
Comment
-
Originally posted by R3Z3N View PostFor those wiring up the CEL:
Comment
Comment