There is a fault code stored in the ABS and must be read before guessing about anything.
The 328 is for the knock sensor. The easy way of checking it is to have a scan tool hooked up with the engine idling. Monitor the timing on the scan tool. Take a small hammer and tap the top of the motor, if the sensor is working, you will see the timing change 4 degrees to the retarded side.
The 715 is for the input speed sensor. Did he verify the sensor was sending a signal the the ECM?
I hope he did not use butt connectors for the wiring repair. They are not solid connections.
I attached flow charts for you as well.
Images (Click to enlarge)
Monday, May 25th, 2020 AT 5:55 AM