that dont tell me anything, that vid, besides, no idle control? a scan tool would show most the sensors dead. that be the real, fact...
in fact that video show how wonderful the ECU really is, for running a dead EFI system , a true marvel of design, "limphom" does really work, as seen in the video.
virtual sig. 1993 Suzuki Sidekick JX 16 valve 5speed, Federal car 4 doors, 4wd(I PRESUME)
im so happy for you,,, GOOD MOTOR, now good spark an fueling.....1,2,3
the ECU is running in limphome mode.
so changing from limp 1 to limp 2, nets the same results, rich as pig, retarded timing. (freeze jumper dead)
1/2 power, RPM limited and poor to no idle controls. The ECU does in fact mimic dead sensors... sure does.
unplugging sensors, does not kill the motor. BY DESIGN. see my page on topic.
http://www.fixkick.com/ECU/LimpHome/failsafe.html
we need to attack the ECU next, and its little friends.(wires)
you clear the codes, (pulled dome fuse for 2min? , let the ECU internal caps discharge.
and the put back the fuse. , then key on, still get 14,,21. (this test proves, its bad, the eCU doesn't lie here)
if yes, then trust the ECU. assume the wires are broken.
33920-58b30 ( this is M/T E3(federal) 1992/93 , 16v ECU) is your car M/T
does the hood sticker not show the word "California"
Calif uses a B10 ro B50, in your case a Calif would be B50 suffix ECU. 58B50 ( the hood tag dictates ECU P/N)
open hood look up. see vacuum map, "
California there?"
my guess is PO played some games... or who knows, ? luck fate or harness damage.
lets fix the ECT first. (most easy)
see pin B9 that is ECT ( keep in mind GEO and Suzuki books swap letters A and B, never numbers and never colors. (rule 1)
B9 is ECT input to ecu.
http://www.fixkick.com/ECU/92-95MPI-...-size-huge.png
the ECT has 2 wires if ground was bad the IAT would fail. and so would the TPS/EGR go
to 5v and fail.. and do... (cept IAT)
oops, ive been here before, the 92/93 , both those 2 years, the ECU have no IAT (looking that up now...found it...)
is your IAT missing? on the rear edges of the air cleaner box? sure is.
some are....
so that would mean the ground wire is cut. that kills the EGR probe too. which of course kills it too.
53? can be that..... probe open , as my ECU index states. and my new egr sensor secrets page.
I don't have a 93 FSM so cant just look the back pages, detailed pages, on the
IAT harness and ECU PIN (shows actually routing in the harness it does) Get and FSM for best experience.....
SO B15 wire on the ECU is OPEN gray-yellow wire is cut.
if you test the wire for continuity, it will show open (infinity)
The gray-yellow wire is open
only where it opened (cut), is the question, it's a daisy chain, feed. Jump order is unknown, sans FSM.
that is it. this failure is one of the most rare of all. but there you got it.
you could test the ground continuity to all sensors, and if good, jumper that to the ECU. pin, B15 ECU sensor ground.
or jumper the dead sensors to battery minus. (the ground side of the sensors) as test, or for ever.
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The EPC database, on IAT rules are..... 16v 92-95 USA
only found on :
1993 Cal. cars
94/95 Cal and FED.
by missing lines 92 (cute suzuki) that means 92 never have iAT. nice of of them to not show that. (starts to make sense that)
so if the hood sticker dont show CAL , your car dont have an IAT.
revised this.
http://www.fixkick.com/ECU/EPC-ECU96...95/89-95NA.pdf
if 53 persist , i have a page for that too, its here. off my egr-choice page.
http://www.fixkick.com/sensors/thermoprobe.txt
my guess is your car is a FED 16v 93 , and is devoid of the words California , here.
Linear Mode
