[lisamac]

Rick

Here's what Ive done so Far:

1.I've to power the pump by using direct power from the battery in order for it to operate. I did this in the beginning and it starts right up.don't understand how it starts up without the EFI fuse.I did this twice,then finally it just gave up. Look for spark at coil, Nothing there,also the Injectors for clicking,Nothing..

The Circuit Opening Relay has to operate before gets to the pump. I check the Main EFI Relay and C/O relay checks out Ok. Also the Battery Pin at the Check Connector is w/o power when it suppose to when key is in On position.

Does it have a Fuel Pump Relay? Another site says the pump is the common problem with Previa's, Supra,Celica's. I question this common problem. If its the pump why is it operating when using the battery to energize the pump.

When I put a test lite across the EFI fuse it doesn't come On,meaning its not shorted.But it comes On when I put key in On-also when I remove the Ign fuse the lite turns Off.

It seems that the Ign circuit is creating this problem. The Ign circuit gives power to the Coil,Ignitor,Injectors thru the Black and Red wire. and activates the EFI main relay giving power to Black and Orange wire thatgoes to the C/O relay,Engine oil level relay,Fuel press. up solenoid,IACV,and Heated Oxygen sensor. Before the pump operates it has to come from the C/O relay to get to the pump.However when the EFI fuse blows it will never power the C/O relay.

Well Rick, Thanks A lot if you got any other ideas am willing to listen and learn,Thank You Again I really appreciate it.

Tom