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+--- Thread: Need help! (/thread-need-help)
Need help! - NikDm - 04-11-2020
RE: Need help! - fixkick - 04-11-2020
(04-11-2020, 03:27 AM)NikDm Wrote: I'm sorry-I use an auto-translator.Car - Suzuki Vitara 1993(1.6 l, 8 valves).The signal from 0 to +5 volts on the ESM pin A13 comes. Output pulse with ECM pin A12-absent.Tell me what can break in the ESM? There is a suspicion of a transistor in the center of the Board, marked in yellow.You can reply to my email address [email protected]93 G16, 8v. TBI
you are welcome !
the CMP works you see, but no SPARK? at the SPARK COIL? output, spark is dead? is that it?
at key on, only , no start, the CEL lamp , the check engine lamp must GLOW , or the ECU (ESM) has no power.
THE FI and the IGcoil fuses must not be blown out. fuses are FIRST checks.
Pin B1 and B7 must be 12vdc KEY ON or main relay is failing, does this car have the IMMOBILIZER option, that does in fact kill main RELAY if the IMMO is unhappy?
you need to know that A12 signal is fast. and you need and oscilloscope to see that. no a simple DMM.
a12 is fast, the A12 output charges the Ignition coil primary is ~10MS and release it fast, causing INDUCTION and HV at the COIL..
![[Image: igniter1a.jpg]](https://fixkick.com/IGN_timing/igniter1a.jpg)
SEE HOW FAST DWELL IS? no DMM can see that ever. only scopes see it. (DWELL means Ignition coil charge up time)
below I am using a fake CMP (CAS) generator, (STIM) and the 56B30 ECU on a bench test shows. Dwell at 7MS , 0.007 second fast. this is at coil primary minus pin
![[Image: cas-1000rpm-2w.jpg]](https://fixkick.com/IGN_timing/cas-1000rpm-2w.jpg)
RE: Need help! - NikDm - 04-11-2020
There is no spark.The fuses are all good.Pins B1,B7,B9 have a power supply of +12 V.Pin A23 has a power supply of +5 V.There is no immobilizer. What can affect the absence of a spark? The CHECK lamp does not work on its 9 volt pin.
What is the size of the pulse should be on pin A13? I have a pulse of 0.4 to 4.95 volts.
RE: Need help! - fixkick - 04-11-2020
a13 seen on my spark page
is this, and is a HALL sensor, and pure clean square wave. 0v to 5v repeats at 4 times 1 turn of distributor rotor.
![[Image: CAS-91.jpg]](https://fixkick.com/IGN_timing/CAS-91.jpg)
RE: Need help! - fixkick - 04-11-2020
the ECU will show code 41 or 42 , DTC errors, if CMP or igniter fails
but engine cranked for 5 full seconds (20 crank turns)
DLC, jumper for diagnosics
code 12 DTC normal CEL lamp flashes,or other codes of other errors lots possible. even 5 DTC codes roll out 1 by 1, can happen.
crank engine, over,5sec and release key only, see 41, for 42, BINGO, what failed, is known.
it only takes CMP good, ECU good , power to ECU good.
for ignitor to fire coil, and for sure a good ignitor.
RE: Need help! - NikDm - 04-11-2020
The coil is new, ignitor is new.CMP (Distributor)-outputs four pulses from 0 to 5 volts.The voltage of 12 volts is present on pins B1,B7, B9 and A23=+5 volts.Cel lamp-does not work.I don't understand why there isn't a spark on the spool! What else can I check?