[Krishnaprasad]

Greetings!,
I am new to this automotive forums hope some one can help me with an issue that i am facing,
a customer came in with this following complaint: Vehicle turning off abruptly on slow speed, Check engine light and ABS is blinking.

The vehicle specifications is as follows:
Make: Toyota
Model: Hiace
Year of Manufacture: 2014
Gear box type: Manual
Engine: 2tr
ECU number: M6

upon connecting diagnosing tool no Engine code is shown, surprisingly in the initializing screen it is shown that ABS not equipped, i looked to confirm if the abs system was equipped, it was equipped in the vehicle, I went into generic EOBD to check but the system failed to run every protocol then i checked the ECU unit to see if it was tampered with there was a external wire that is being connected to a romatic DBW speed limiter. I Also noticed that the Check engine light was blinking constantly but the ABS light was blinking in a pattern indicating a code i guess, the pattern is as follows:

3 blink pause 1 blink pause
3 blink pause 2 blink pause
3 blink pause 3 blink pause
3 blink pause 4 blink pause
4 blink pause 1 blink long pause

I have checked the wiring to the speed limiter to double check if any loose connection is making the issue. but, the connection seems to be fine. I removed and reconnected the ABS Control unit wire to check for loose wire, bend pin, dust etc. Then i checked if any cracked wheel speed sensor is making the issue, here also the sensor looks pretty ok (Physically looks ok and sensor sticks to a metal, DID NOT check with a multimeter), i removed the ECU of this vehicle and put the ECU to another vehicle of same make model that started up just fine with no trouble code, indicating that the ECU is fine.

what can be the most probable cause, and any advice on how should i proceed with diagnosing the vehicle

any help would be appreciated greatly

Krishna Prasad