H4 Check LH Front ABS Inlet Valve Function

NOTE: LH front ABS inlet valve must be activated before applying brake pressure.

- Use Rotunda New Generation Star Tester 007-00500 or equivalent in the active command mode to command LH front ABS inlet valve to ON.

- Apply moderate brake pressure while turning LH front wheel.

NOTE: After completing pinpoint test, return LH front ABS inlet valve to OFF.

- Will LH front wheel turn?

YES -- Go to H5. H5 Check LH Front ABS Outlet Valve Function

NO -- Replace anti-lock brake hydraulic control unit.