S.o.s

The control signal refer to the authorization that is to be given if a particular task is to be accomplished.

key on,left turn signal on, press lower left and upper right speed control buttons

Control unit generates all the control signals like memory read signal,i/o read signal,memory write signal etc

Injector #1 output driver does not respond properly to the control signal.

or

Injector #2 output driver does not respond properly to the control signal.

or

Injector #3 output driver does not respond properly to the control signal.

or

Injector #4 output driver does not respond properly to the control signal.

or

Injector #5 output driver does not respond properly to the control signal.

or

Injector #6 output driver does not respond properly to the control signal.