Samurai TBI | No Injector Pulse

[fixkick]

Great, thx for welcoming a fellow Suzuki fan OK, found some new info. The ECU has a gry/white (A8) and gry/black (A20) wires. I followed them and found they go to a 2 pin connector near the fuse panel under steering wheel that has nothing plugged into it. I looked around to see if maybe something fell out of it but it does not appear so. I am guessing it is not used on mine. I could not find any other electrical part that had any grey wires going into it.

Tested resistance on the big white resistor and it was reading at .4 Ohms. A bit higher than .27 but it appears to not be fried.

I am still quite suspicious of these transistors on the ECU. You mentioned that you don't think Samurai uses them both? I have both of them on my ECU, with the same Q101 and Q102 markings and locations as the tracker ECU. I did end up ordering the new parts from where you suggested on another page (Match a Knob)

great progress,.  you can post any EFI gas car here, I can try to help on any car, EFI..

the EPC does not show at all any such external resistor at all.  nut sure what it does?

yes test the transistors.  both.
this car ran before right?, not found dead, or bought dead.? 

usually the transistors do not go bad unless injector fails(shorts) or more common the wires to it short.
or on some cars, the injector dies, and owner (gone wild) short wires at the injector to battery plus+, to make it go.   lots died like this.

good luck to you,, the best test is bipolar transistor tester for gain (BETA)
use heat sink grease on the  back side of transistors fresh, same as used on computer CPU/'s between heat sink and CPU. (or IGP)
if you see mica gasket behind he transistor do no lose that , put it back as found.



that is about. it.  a shorted transistor or open , can be found easy with DMM set TO Resistance and DIODE mode.
what that does is raise test voltage over 0.7vdc, most do 1.2v so the junctions can be forward BIOS> then the LCD shows the drop voltage.
0.7 is normal  0v shorted, and cracked inside junction will fail and show open circuit,.

here are they all are,  and very very rare, (90-95 ) series, SY413 is the name of car inside suzuki,  
here are all Samurai ecu codes USA<  my guess is you have 80C30

1.3Liter 8valve .   e3-usa fed.  e33 is calif.    only 3 kinds in USA,  outside usa 3 or more engines and vast ECU used.




what this does IDK.  my wild guess now,  a factory mode jumper test?   (on very old cars, (JDM) they had no, Oxygen sensor so tuned for low "CO" with resistors then, I think it is for that , if car is ordered new for NO smog zones. (no O2 sensors) aka. JDM cars (slicks I call them)





i think the manual for this car best is.

99501-83350-33E.pdf


samurai  supplement.

hard to find ECU, (sold used or refurb )