Datasheet and description components ECU Magneti Marelli G7.11 – Fiat

•  in this topic we will talk about ECU type Magneti Marelli G7.11 for car Fiat
• description components of ecu
• datasheet for its component

Discription components ECU :

Processor :  MC68HCP11A1 TYPE Motorola with 52 pins.

Memory RAM  : MHS MM3 65162S0129.

Decoder : PAL-ST B22AF627.

Ignition Coils : driver BU 941 and driver BU 931.

5 VOLT Voltage regulator : L4947R. 

Quadruple multidrive : CA3262 AE.

Datasheet and description Ignition Coils driver BU 931 and BU 941

The picture below show the location of the tow ignition coil drivers in ECU.

Datasheet drivers BU 931 and BU 941

table description for pinout Coil A driver  - Cylinder N1 and N4

Pin component	Function
Base -B	Firing- comes from the low power transistor
Collector -C	Connected to pin n1 of ECU
Emitter -E	Wire grounding – connected to ground

 

the PNP transistor of low power as shown the picture below is responsible for drive or activate the A driver ignition coil, and with this transistor there is transistor resistor current limiter  of 100 Ohms.

table description for pinout Coil A - Cylinder N2 and N3

Pin component	Function
Base -B	Firing- comes from the low power transistor
Collector -C	Connected to pin n19 of ECU
Emitter -E	Wire grounding – connected to ground

 

the PNP transistor of low power as shown the picture below is responsible for drive or activate the B driver ignition coil, and with this transistor there is transistor resistor current limiter  of 100 Ohms.

Datasheet and description injector drive BDX-53

table description for pinout BDX-53

Pin component	Function
Base -B	Firing- comes from the low power transistor
Collector -C	Connected to pin n18 of ECU
Emitter -E	Wire grounding – connected to ground

 

The low-voltage PNP transistor power as shown in the picture below in red circle  .responsible for activate The injector driver

Datasheet and description Voltage regulator 5 volts : L4947R

The picture below show the pinout

table description pinout

Pin component	Function
Pin number 1	In +12V
Pin number 3	Ground
Pin number 5	Out +5V

 

Datasheet  and description multI drive Quadruple / CA 3262 AE

This components as shown below works like or similarly to NPN transistors, so the input signal is 5 volt and the output signal is ground

Table of Drive A - Diagnosis for Solenoid Relay valve 1 and 2

Pin component	Function
Pin number 1/3	Output A for electrovalve N1 connected to pin 22 of ECU
Pin number 6	Output C for diagnose line connected to pin 4 of ECU
Pin number 8	Output D for electrovalve relay N2 connected to pin 23 of ECU

 

Table Drive B  for Fuel pump relay and  Injection light

Pin component	Function
Pin number 1	Output A for relay of feul pump connected to pin 7 of ECU
Pin number 3	Output B for injection light  connected to pin 7 of ECU
Pin number 6	Output C  connected to pin 23 of ECU

 

Note: as shown in the following picture below. The check engine light and the fuel pump relay have a diode in series,

Datasheet  and description Processor - Motorola TYPE MC68HCP11A1

in this processor you can see the pinout description in the picture below.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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