A good bit of progress today on the bike using the Z1000H Troubleshooting Document as a guide.
Yay! ...she fired up - although at full rev's which obviously isn't right so i switched her off rather promptly. The root cause of the issue with the ECU turning into a hotplate certainly seems to be the transistor being short circuit. The ECU now doesn't get hot and the battery is holding charge and not being drained. On the cards for tomorrow is ..
UPDATE: The 2DS412 is available from Littlediode.com £4.99 each. Reading through this document I found a reference to the transistor that is getting hot (NEC 2SD412). Its used to drive the Injectors (130). Tim reports that when the Injectors are disconnected then the transistor doesn't get hot - i guess no surprise but this could mean that assuming the Injectors are ok (new one's fitted) i could have an issue with R110 and/or R113.
If I remember my transistor theory T123 is in a Common Emitter mode which means the load is between Common (top right) and Emitter (bottom right) legs. The load (i think) is a combination of the Injector (130) + Resistor 110 + Resistor 113 (bottom left). R113 being variable to i guess offer some kind of tuning on the input to the comparator I24. Spoke to Tim earlier and he has hit a wall with resolving the ECU electrical problems as even with the new Injectors the ECU is still turning into a hot plate. He hasn't been able to get an auto electrician interested to take it on so I am going to have the bike back and see if i can figure it our myself.
I managed to source some injectors through the Z1 Owners forum which is obviously welcome news. They arrived today so I payed Tim a quick visit to drop them off. They will be tested tomorrow... So fingers crossed we may be making some noise real soon. |
AuthorShaun Chivers. Archives
August 2016
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