Retrofit brake booster vacuum pump - SM43.10-P-0003A

MODEL 203 up to 30.4.03 with ENGINE 112

Picture 1

Fig 1: Identifying Bracket For Brake Booster Vacuum Pump

Picture 2

Fig 2: Identifying Brake Booster Vacuum Pump

Picture 3

Fig 3: Identifying Electrical Line And Vacuum Test Line

Picture 4

Fig 4: Identifying Brake Booster Vacuum Pump Control Unit

Picture 5

Fig 5: Identifying Fuse Holder In Interior Fuse Box

Picture 6

Fig 6: Identifying CAN Data Bus Adapter Connector (2-Pin)

Figure 7

Fig 7: Identifying SAM Control Unit Slot

Picture 8

Fig 8: Identifying Vacuum Fitting

1	Remove water trough overflow
2	Install bracket for brake booster vacuum pump (M56) on crossmember (1) behind right headlamp	See picture 1
3	Attach vacuum pump (2) to bracket	Make sure that the lower foot locates in the rubber grommet in the longitudinal member (see picture 2).
4	Remove old vacuum line
5	Install new vacuum line on brake booster, intake pipe and vacuum pump	The vacuum line has an additional vacuum connection (see picture 8) on the connection fitting to the brake booster. If a line is not connected here, the connection fitting should be sealed with a rubber cap (see Parts ordering notes).
6	Replace crankcase ventilation hose	Only valid for model 203.#61 /#81 with automatic transmission (code 423). The vacuum line fitted as standard in the vehicle has a suction jet pump which is also connected to the crankcase ventilation hose. The new vacuum line does not have such a suction jet pump and therefore does not use the connection.
7	Remove interior compartment air filter box, battery, floor mat and passenger-side carpet, A-pillar trim (right), trim under passenger-side dashboard, and passenger-side footrest
8	Remove body cable passage behind battery
9	Position electrical line for brake booster vacuum pump (BNGN and RDGN) and vacuum test wire	Route and connect the electrical line (3) and vacuum test wire (4) in the major assemblies compartment in such a way that they are not kinked and do not rub against other components (see picture 3).
10	Attach electrical vacuum pump control unit (N65/3) to passenger-side footrest	See picture 4
	Wiring diagram for electronic stability program (ESP) control unit	Observe the circuit diagram when connecting. Connect the vacuum test wire to connection 4 of the vacuum pump control unit (N65/3). Electrically connect the wiring harness to the vacuum pump control unit (N65/3) as follows: 5-pin coupling of CAN connection and connection to front SAM control unit (N10/1): Connection 1 2-pin coupling with circuit 30 (RDWH) and circuit 31 (BN): Connection 2 (center) 2-pin coupling (RDGN and BNGN), vacuum pump electrical line (M56): Connection 3 (outer)	PE42.45-P-2101FA
11	Connect ground cable to inner right rocker panel (W28/2)
12	Remove driver-side floor mat and carpet, accelerator pedal, and trim under driver-side dashboard
13	Route cable set correctly from passenger-side to driver-side footwell
14	Remove interior fuse box (F34) and attach fuse holder (RDWH) at slot 37	See picture 5
15	Insert CAN connector of cable set into CAN data bus adapter connector (2-pin) (X63/4) at left rocker panel	See picture 6
16	Remove front SAM control unit with fuse and relay module (N10/1)		AR54.21-P-1260P
17	Route line to front SAM control unit (N10/1) (GN) and insert plug into slot 21	See picture 7
18	Insert line of circuit 15 (BKGN) into engine compartment/FFS [RBA] connector (X25/7) on left-hand side of engine compartment	If the connector X25/7 is not present, the line is routed directly into the front SAM control unit (N10/1) at slot 3, pin 1. Use contact spring A 013 545 15 26 for this.	GF00.19-P-1000-01FA
		For information on electrical connection of cable set: see circuit diagram of ESP control unit. Further information on electrical vacuum pump: see documentation in WIS.	PE42.45-P-2101FA
19	Install in the reverse order	All lines, cables and hoses must be routed correctly. Make sure that lines, cables and hoses cannot rub against other components or become kinked; if necessary, protect areas at risk using suitable material (adhesive felt tape, rubber grommets, cable ties).

PARTS ORDERING NOTES

Part no.	Designation	Quantity
A 029 545 06 32	Brake booster vacuum pump control unit	1
A 112 018 04 82	Crankcase ventilation hose (only required for vehicles which already have a suction jet pump (venturi) to increase vacuum level)	1
A 203 420 01 86	Bracket for brake booster vacuum pump	1
A 203 430 00 32	Vacuum pump brake booster	1
A 203 430 58 29	Vacuum line for left-hand drive vehicles	1
A 203 430 59 29	Vacuum line for right-hand drive vehicles	1
A 203 540 57 08	Cable set	1
A 013 545 15 26	Contact spring (only when required)	1
A 000 987 11 45	Rubber cap (only when required for sealing the additional vacuum connection on the vacuum line)	1