EFI University

adaptec · Joined: 22 Jun 2006 Posts: 50 Location: Norway

I'm struggling with a MoTeC M48. I get nothing more than ECU Not Connected no matter what I do. I've tried to laptops, one with integrated RS232 port and one with USB adapter. I've checked that the ECU actually has power.

Anyone have any tips? I used a standard RS232 cable. I suspect that we might need a special cable from MoTeC?
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My headstuds need more torque than your vtec engine can produce.

hezsmurf · Joined: 17 Nov 2005 Posts: 101 Location: The Netherlands

Motec uses Can-bus communications, and yes with a special cable.

alexander · Joined: 15 Aug 2006 Posts: 154 Location: California

adaptec · Joined: 22 Jun 2006 Posts: 50 Location: Norway

So the cable part #63003 will solve my problem and let me communicate with the M48?
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My headstuds need more torque than your vtec engine can produce.

alexander · Joined: 15 Aug 2006 Posts: 154 Location: California

You need a logic level cable to talk to an M48. I don't know if that's your problem, but it'd be a good place to look.

andi · Joined: 08 Feb 2006 Posts: 21

im looking into making a motec pci comms cable and have found some diagrams but all the ones ive found a 4 wire and the motec end,

acording to the motec site they state 5 wire, does any one have any more info

merlin · Joined: 03 Jun 2006 Posts: 78 Location: Melbourne Australia

you will need the Motec supplied cable to be able to access the ecu

just for referace it uses three wires only ..tx /rx/0v

John P

andi · Joined: 08 Feb 2006 Posts: 21

thats what im trying to avoid doing, ive seen people make them using a max3232 chip with a basic circuit, thats what im hoping to do,

i can get the motec pci cable next day for £130 but wheres the fun it that?

the 3 wires u are refering to are on serial no's after 3000

ive got 3 of them ecu's infront of me but want to test the m48 too