3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT - Alfa - GT - eLearn

125001361 - 3340A12 ABS HYDRAULIC AND ELECTRONIC CONTROL UNIT

) Position the vehicle on a lift.Proceed with the removal Op. 5530B10 BATTERY - R+R.Proceed with the removal Op. 5530B52 BATTERY DRIP TRAY/SUPPORT - R.R..Proceed with the removal Op. 4450B10 TYRE INFLATION VALVE CAP - REPLACE.Remove the protective cap from the bleed valve on the brake caliper.Connect the recovery device (pipe and reservoir) to the brake caliper bleed valve.Operate the brake pedal until the brake/clutch reservoir is drained.1. Disconnect the electrical connection from the brake fluid minimum level warning light switch.

	Description	Connector
1	Brake fluid level sensor (switch)	See K25 BRAKE FLUID LEVEL SENSOR (SWITCH) ( FRONT )

2. Disconnect the electrical connection from the ABS hydraulic and electronic control unit.

	Description	Connector
2	ABS control unit	See M50 ABS CONTROL UNIT ( FRONT )

3. Undo the connectors (3a) and (3b) and remove the rigid pipes from the master cylinder to the A.B.S. hydraulic control unit (3c).4. Undo the connectors (4a) and disconnect the rigid pipes from the hydraulic control unit to the brake calipers (4b), hydraulic control unit side.5. Release the A.B.S. pipes from the fastenings.

1. Disconnect the electrical connection from the VDC system pressure sensor.

	Description	Connector
1	Pressure sensor (VDC)	See K72 PRESSURE SENSOR VDC ( FRONT )

2. Remove the clips (2a) and remove the ABS electronic and hydraulic control unit (2b).

Refitting ( Removing

)

The letters indicating to which caliper and to which brake pump outlet they should be connected are stamped on the control unit at each outlet.RR = to the right rear brake (pipe marked with light blue band)LR = to the left rear brake (pipe marked with green band)RF = to the right front caliper (pipe marked with yellow band)LF = to the left front caliper (pipe marked with white band)MC1 = from the main circuit pump/flange side (pipe marked with black band or pink band when the pipe polyammide resin is black)MC2 = from the secondary circuit pump/front (pipe marked with brown band).

Place the A.B.S. hydraulic and electronic control unit in position and secure it using the clips.Connect the electrical connection to the VDC system pressure sensor.1. Connect the rigid pipes from the hydraulic control unit to the brake caliper (1a) hydraulic control unit side and tighten the connectors (1b) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
1b	Connector	PIPE FROM CONTROL UNIT TO FRONT BRAKES	M10/M12	(Control unit side) 1.3 - 1.5

2. Secure the rigid pipes from the hydraulic control unit to the brake calipers to the fastenings.3. Place the rigid pipes from the master cylinder to the A.B.S. hydraulic control unit (3a) in position and tighten the connectors (3b) and (3c) to the recommended torque.

	Fastening	Component	Ø	Value(daNm)
3b	Connector	PIPE FROM PUMP TO HYDRAULIC CONTROL UNIT	M12	(Master cylinder side) 1.3 - 1.5

	Fastening	Component	Ø	Value(daNm)
3c	Connector	PIPE FROM PUMP TO HYDRAULIC CONTROL UNIT	M12	(ABS control unit side) 1.3 - 1.5

4. Connect the electrical connection to the ABS hydraulic and electronic control unit.5. Connect the electrical connection to the brake-clutch fluid minimum level warning light switch.

Proceed with the refitting Op. 5530B52 BATTERY DRIP TRAY/SUPPORT - R.R..Proceed with the refitting Op. 5530B10 BATTERY - R+R.Bleed the air from the hydraulic braking system Op. 3330A14 FRONT OR REAR HYDRAULIC BRAKE SYSTEM - BLEED.Proceed with the refitting Op. 4450B10 TYRE INFLATION VALVE CAP - REPLACE.Remove the vehicle from the lift.