Fiesta ECU test...
 

Hi ya, i know that you can plug two jacks together on the Scooby to check the ECU and see any fault codes and was hoping that you can do the same on a circa 1996 Fiesta, would anyone know jow or where to look??

Cheers All!

Yes, but it's not that easy....

If I recall correctly that year should be an EECIV engine management

...There should be a triangular connector (sometimes with a red cap in it) on the passenger side inner wing under the bonnet. This is the serial data connector (where a fault code reader plugs into).

Without a FCR, you'll need a test LED light (or probe - but it MUST be LED - a bulb based test light/probe draws too much current and can damage the ECU) or an analogue voltmeter (digital ones don't usually react quick enough)

Looking straight at the connector: The pin on the bottom left is Earth, Top middle is Output, and Bottom right is Input.

To get fault codes, connect the voltmeter or test LED to the output pin on the connector and the other end to the +ve on the battery. Then bridge the Input pin on the connector to the earth pin.

Switch on the ignition, after about 40 odd seconds it will output the fault codes as LED flashes. Quick flashes are the numbers, a 2 second pause is for the next digit. A four second pause is for the next fault code.

A 6seconds+ pause and a single flash is for the end of current codes. After another 6odd+ seconds, fault codes logged in the memory are given.

This is off the top of my head from quite some years back, so it maybe slightly different. I think the 1996 fiesta uses 3digit fault codes, Earlier ones used 2 digit fault codes.

Don't ask what the codes are though...I can't remember them! ;)

thanks for that guysm the link however goes to a dead page!? Any suggestions?