How To: Remove ABS ECU and keep AYC working in Evo4

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Feb 17, 2014, 07:20 AM

Lion_Sam

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How To: Remove ABS ECU and keep AYC working in Evo4

Sorry, if someone already posted that guide, but this is my own, based on my experience. =)

So... If you remove ABS ECU then AYC will stop receiving signal from wheel speed sensors, because ABS ECU is reading it and duplicating for AYC ECU.

Solution is basic. Evo4 and Evo5-6 ABS ECU pinout and wiring is different. FULLY.
You need to know which wiring you have. To be sure, just look for ECU part number:
For Evo4 it's MR282192, and for Evo5-6 it's MR362972.

Wheel Speed Sensors are wired to yellow plug (B-24) and have the form of twisted pair:

Everything will need to do only on this plug.

Code:

1. Ground pins 6-7-8-9. Simply connect it to pin 2.
It will connect ground to sensors.

2. Connect pin 19 to 23 (FL), 21 to 24 (FR), 22 to 11 (RL), 20 to 10 (RR).
It will connect every sensor signal directly to AYC ECU.

For information: pins 19-20-21-22 are signal from Speed Sensors, and 10-11-23-24 are input for this signal to AYC ECU.

P.S.: pins order by view on ECU connector (or if to look from wires back of connector).

Last edited by Lion_Sam; May 5, 2015 at 05:54 AM.