Dead Guzzi - Back like Lazarus

[guzzijack]

After our 'Oirish adventure with the Cali EV ECU problem I am glad to report that the problem has now been sorted.

 

This is the early '97- '00 WM P8 box but I believe the same principle applies to the WM 16M and possibly the WM 15M. To recap: the ECU power relay's live side switching path is through the keyed ignition with the grounding side though the ECU box, (via terminal 10 on the P8 ), with diode protection to prevent current surges, reversed polarity etc. Once energised the relay will then allow the ECU to receive power and liven up via terminal 20 and also supply a live feed to the fuel pump relay and directly to the the injectors - both those items awaiting control switching from the ECU itself.

 

The bad news was that, possibly due to my jiggling the relays around, (I still had a couple of the crappy Siemens O/E in situ, Doh!), a power surge hit terminal 10 and blew the diode and track on the ECU PCB - although it would function perfectly if I jumpered across the power feed terminals of the relay (30 & 87). The good news is that I found a place that specialises in automotive ECU diagnosis and repair who were able to sort it.

 

Although they were unaware that the WM series ECUs were fitted to bikes - they had only seen the P8 on Ford Sierra & Escort Cosworths and the 16M on Fiats - they had full diagnostics to test the unit and did the repair and test while I waited and all for £55 plus vat.

 

Although mainly of interest to the UK readers of this list, the details of this very helpful outfit are:

 

Auto Matec

Unit 7, Stowford

Filham Moor

Ivybridge

Devon PL21 0BE

 

01752 894842

www.automatec.yows.co.uk

 

Ask for Mike.

 

Cheers

 

Graham

[Guzzirider]

Some useful info Graham- thanks for sharing!

 

Guy

[mark.gilmore]

 

Good stuff GILLY