Immobiliser.fault

[nunny666]

Hi .my 1994 hymer immobiliser does not want to work for some reason .its the keypad type with 4 digit code .I know the code is correct. Recently had a flat battery but this never effected immobiliser before .I think I can see what I think is a faulty connector block on top of fuel pump. Could thus be the culprit ?thanks in advance any help appreciated

 

[Speve]

Good idea to just try cleaning it up and see if that does the trick