Magneti Marelli 1G7 Fiat ECU Components Define

Vehicles: Canopy, Fiorino and Uno, 1.0 and 1.5 mpi.

ECU Modules Repair Helper Components & PINOUT

 

Main components

1. Stepper motor;
2. Coil 2;
3. Coil 1;
4. Canister;
5. Double relay;
6. Capacitor;
7. Nozzle drive (single point); Note: You will not have the drives 8 and 9.

8. Nozzle 2 and 3;
9. Nozzle 1 and 4;
10. 5V regulator;
11. Capacitor;
12. Processor;
13. Eprom memory.

 

 

Technical specifications

Special features

. The immobilizer is on the processor.

. The immobilizer is optional.

 

Common defects

The 96/97 system came out with a processor defect. When successive failures occur, the software of the processor blocks the stepper motor, causing idle oscillation. This failure will only be repaired when the reset procedure is performed. processor, using the tool chip.

Note: Nozzle drive – Commercial – IRF 34.

Drive relay A

Activate side A of the double relay, by pin 4 of the ECU.

Caution: Between pin 4 of the ECU and the relay drive A has a diode. Micro transistor that drives the A relay drive

Drive Coils ignition

Drive CA 3262 AE – Relay A / C – Relay B – Injection light This component works  similarly to NPN transistors, that is, the input (trip) is made by positive 5 volts and the output is negative.