Dennis...
The injectors are quite simple.  They get constant power from the O2 sensor
relay.  The Ecu give is injectors their ground so they "fire" - this is
controlled by pin 25/12... Make sure this circuit is OK before you start
looking for an ECU.  If the ECU is shot, I have some spares if you need one.

David Marshall

Fast Forward Automotive Inc.
4356 Quesnel Hixon Road
Quesnel BC Canada  V2J 6Z3
mailto:info@fastforward.ca <mailto:info@fastforward.ca>
http://www.fastforward.ca <http://www.fastforward.ca>
Phone: (250) 992 7775           FAX: (250) 992 1160

� Vanagon Accessories and Engine Conversions
� Transporter, Unimog and Iltis Sales
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-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf
Of Dennis Atkins
Sent: October 24, 2001 4:35 PM
To: vanagon@GERRY.VANAGON.COM
Subject: I-4 ecu woes?

Hey gang,
  Went to start the engine in my I-4 conversion for the first time this past
weekend , stopped trying when I saw raw gas dripping out the head pipe. It
seems that both the fuel pump and the fuel injectors are on constantly
whenever the key is in the run position. My engine management system is 1989
golf GL Digifant II. I have checked my wiring harness to insure that all
wires go to the correct terminals on the ecu and sensors. checked them all
for continuity and for shorts to each other or to ground. All wires between
the ecu and the various sensors was left intact and uncut. All ground
connections in the original wiring harness were also retained and connected
to the same locations on the van. The wires that interface with the van(91
carrat 4 sp.) are connected as follows.

     wirecolor         ecu ter.     connected to:    fucntion
  BR                 ing. mod. ter.     chassis ground
                        #2
Y                    ing mod ter.    coil +         ing. pwr.
                       #4
BR/G                   #3 digifant   ter #85 fuel  pwr. to injectors +
                                        pump relay        Fuel     pump
W/BK              #12 ecu             fuel injectors  injector neg.

G/W               #14 ecu             ter.87 pwr.       pwr. to ecu
                                       Supply relay

BR              #13 ecu               chassis ground       ecu ground
BR                  #19              engine ground         ecu ground
  BK/R              #1               Starter ter. 50       start signal
                                                            to ecu

I suspect that the ecu is faulty(purchased at the local pick and pay
untested for $25).However I want to be sure I did not overlook something
before I try another ecu,which brings me to my second Question.Does anybody
on the list have a good digifant II ecu they want to sell?
(cheaply?)
Thanks in advance
Dennis Atkins

P.S.
A belated thank you to all who responded to my fuel line post last week.
I was able to return the suspect fuel line and ordered the correct line from
bus depot.....Thanks

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