I want to change to a ST205 engine ecu but I understand the power steering then will not work, so I have to find out what to do to get it woking again.Bob
[Mk2] [Turbo] Rev 2 Power steering ECU
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[Mk2] [Turbo] Rev 2 Power steering ECU
Anyone have any info on how this ecu works. I want to change to a ST205 engine ecu but I understand the power steering then will not work, so I have to find out what to do to get it woking again.
Bob
I want to change to a ST205 engine ecu but I understand the power steering then will not work, so I have to find out what to do to get it woking again.Bob
Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
Re: [Mk2] [Turbo] Rev 2 Power steering ECU
There's 2 relevant signals between the engine ECU and the power steering ECU, they are PS & PSCT. As far a I know neither of these signals exist on the ST205 ECU.
PSCT is an output from the engine ECU to turn on the power steering. The ECU turns on the power steering when the engine is running but not when the engine is starting . Disconnecting this signal from the engine ECU connector will apparently make the power steering run any time the ignition is on.
PS is an output from the power steering ECU to request that the engine ECU increases the idle speed to handle the extra electrical load caused by turning the steering.
& PSCT. As far a I know neither of these signals exist on the ST205 ECU.PSCT is an output from the engine ECU to turn on the power steering.
The ECU turns on the power steering when the engine is running but not when the engine is starting . Disconnecting this signal from the engine ECU connector will apparently make the power steering run any time the ignition is on.PS is an output from the power steering ECU to request that the engine ECU increases the idle speed to handle the extra electrical load caused by turning the steering.
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Re: [Mk2] [Turbo] Rev 2 Power steering ECU
jon wrote:There's 2 relevant signals between the engine ECU and the power steering ECU, they are PS
PSCT is an output from the engine ECU to turn on the power steering.
PS is an output from the power steering ECU to request that the engine ECU increases the idle speed to handle the extra electrical load caused by turning the steering.
That's how rev3 power steering works anyway.
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- the only club to win 'Best Club Stand' at JAE more than once, and twice in a row!Re: [Mk2] [Turbo] Rev 2 Power steering ECU
Anyone got a manual with the wiring diagram for the steering ECU, I may be able to just fit a relay that puts a signel to the ecu when the engine is running.
Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
Re: [Mk2] [Turbo] Rev 2 Power steering ECU
..Designer for turbo set ups on F1 cars, and Nitrous Oxide Systems of the USA in the 80s
Re: [Mk2] [Turbo] Rev 2 Power steering ECU
Do a google search for "MR2_SW_1993_ELECTRICALWIRINGDIAGRAMS.zip"
They're a set of PDFs for a US'93 MR2.
"MR2_SW_1993_ELECTRICALWIRINGDIAGRAMS.zip"They're a set of PDFs for a US
'93 MR2.Re: [Mk2] [Turbo] Rev 2 Power steering ECU
I have that pdf set on my shydrive at the moment guys if you want to downoad it...pm me your e-mail address and I'll send you a link...
http://cid-03370d0e3f822fec.office.live ... ublic?uc=1
or try this.
..pm me your e-mail address and I'll send you a link...http://cid-03370d0e3f822fec.office.live ... ublic?uc=1
or try this.
Re: [Mk2] [Turbo] Rev 2 Power steering ECU
I'm looking at doing the same thing. I.e trying to wire in a simple relay to turn the power steering pump 'on', only after the engine is started.
Any idea's what ECU wire I could attach the relay to as a trigger wire? I'm trying to make it all concealed in the ECU case, hence I need a ECU wire for my trigger of the power steering relay.
Cheers!
I.e trying to wire in a simple relay to turn the power steering pump 'on', only after the engine is started.Any idea's what ECU wire I could attach the relay to as a trigger wire? I'm trying to make it all concealed in the ECU case, hence I need a ECU wire for my trigger of the power steering relay.
Cheers!