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no injection ...ECU? 92 tracker 8v TBI
#12
Quote:TTL chip 74hc152 pin 16 is power VCC, (datasheets are google easy today to pull up)
didn't find it don't know what it is?

Did some more tests here

[Image: 56B30-5VDC.jpg]

bench test with B1 B2 hooked up. same results before and after CAP replacement;
B1 12.38v
Ic7 2= 11.76v 3=12.36v 13=5v
Ic10 14=5 v
Ic1 43=5 v
Ic2 42= 5 v
C105 5 v
A23 5 v
Q100 b=11.76 v c=5 v e=12.34 v
B6 0 v
Q103 b=0 v c=0 v e=0 v
Q5 ?? small with 3 pins 2= 0v 1= 3.75 v
Q9pin 2 ?? 3 pins 0, .64v, .17v
Zeiner ?? D105? 11.76 & 0 v

Connectors
Green
B1 12.36v
B7 12.36v
B12 12.13 v

Yellow
A2 12.12 V
A4 11.97 V
A6 12.26 V
A7 111.79 V
A13 5 V
A14 5V
A15 4.77 V
A16 4.46 V
A17 4.71 V
A18 4.76 V
A18 4.76 V
A20 5 V
A22 4.81 V
A23 5 V

THE REST ARE 0 V

The CAP's had ruby disease for sure. goo from c111 lots and c103 less

Once removed I tested the copper circles at the solder points on both sides of the board. I assume these are the VIA's. All CAP locations had continuity from one side of board to the other. You could see the darkened circle from the CAP goo. I scratched it up with a pin to reveal copper.

Post CAP change I hooked up CEL from B13 to B2 and disgnostic ground A3 to B2. No flash nothing.total crap!


Quote:shorted outputs blow ECUs

I have not tried it in vehicle. Not expecting much.I think I need another ECU. I will test outputs before trying this brick o CRAP!

Thanks again
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Messages In This Thread
RE: no injection ...ECU? 92 tracker 8v TBI - by armchairlonghair - 03-24-2014, 03:07 AM

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