1 Disconnect the battery negative terminal.
2 Working in the passenger's footwell of Fiat Punto, prise out the protective caps, undo the three bolts and lift off the ECU cover (see illustration).

Prise out the protective caps, then unbolt and remove the ECU cover

3 Undo the mounting bolts securing the ECU mounting bracket to the floor, noting the location of the earth lead (see illustration).

Undo the mounting bolts and remove the ECU mounting bracket (arrowed)

4 Lift up the mounting bracket, disconnect the ECU wiring connectors and remove the assembly from the car Fiat Punto.
5 Undo the four nuts securing the ECU to the mounting bracket and remove the ECU.


6 Refitting is a reversal of removal.