Need help!

[fixkick]

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..

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