ABS Control Module -J104-, REPLACING: Removing

Remove the ABS Hydraulic Unit -N55- with ABS Control Module -J104-. Refer to HYDRAULIC UNIT WITH CONTROL MODULE, REMOVING AND INSTALLING .

Remove the ABS Hydraulic Unit -N55- with ABS Control Module -J104-.

CAUTION: Only separate the ABS Control Module -J104- from the ABS Hydraulic Unit -N55- when they are removed.

Hydraulic unit, removing and installing. Refer to HYDRAULIC UNIT WITH CONTROL MODULE, REMOVING AND INSTALLING .

Remove the ABS Hydraulic Unit -N55- with ABS Control Module -J104-.

NOTE: The ESD Work Surface VAS 6613 has sufficient grounding to protect against an electrostatic discharge.

-- Place the hydraulic unit with the control module on the ESD Work Surface VAS 6613.

NOTE:

The control module -2- faces up and the hydraulic unit -4- with the pump motor and connector -3- faces down.

Fig 1: Identifying Hydraulic Unit

Courtesy of AUDI OF AMERICA, LLC

-- Remove the bolts -1-.

NOTE:

Throw the old bolts away immediately.

Do not use the old bolts again.

-- Remove the control module upward holding it vertically.

NOTE: Be careful not the hook the valve coils when removing them otherwise the valve coils could get stuck on the mount.

CAUTION:

Cover the open hydraulic unit. Protect the hydraulic unit, the sealing surfaces, the valve bodies and the pressure sensor from dirt or from getting damaged.

Do not use battery voltage to check the pump motor otherwise contact surfaces could get burned.

CAUTION: Protect the contact surfaces on the pressure sensor against mechanical damage and electrostatic discharge. The ESD Work Surface VAS 6613 grounds the technician sufficiently to protect again overcharging components.