DTC 8-4

Diagnostic Trouble Code (DTC) 8-4: IC (Integrated Circuit) Diagnosis
The ABS control unit checks the internal ICs during the initial diagnosis and regular diagnosis, and it keeps the ABS indicator light on if it detects any abnormality. It turns the ABS indicator light on again if it detects any abnormality after the light goes off.

Replace the ABS control unit if DTC 8-4 is indicated with the SCS service connector connected.