If I am not mistaken, the wastegate selonoid is driven by pin-36 of the SBEC
. On the 1993 4517652 REV E of the SBEC
-II, pin 36 is driven by pin 1 of Z141. Z141 is Chrysler P/N 4517702. It is in a SIP-15 package, which is consistant with medium power/current driver ICs. This IC
also drives SBEC
pins 33 (Cruise Vaccum), 34 (A/C Clutch - via diode) ,35 (EGR
Solenoid) ,36 (UNK) ,37 (UNK - via diode) ,51 (Auto shutdown - via diode), 52 (Evap purge selonoid), 53 (cruise vent).
I have the 2.5l TBI
, 3.0l V-6, 3.3l V-6, and 5.2l V-8, and 5.9l V-8 versions of this SBEC
The 3.3l V-6 version appears to be the most populated. I have socketed a 3.3l V-6 version of this board and have loaded a 1993 2.5l TBI
calibration into it. I am successfully running this set-up.
This spring, I will be burning the Mexican 2.5 MPFI
calibration and loading it to the board. I will be adding the MPFI
(Turbo) intake and turbo distributor, with the hall effect sensors (both cam and crank posisition) to the engine. I will be modifing the engine wiring harness to accomodate the extra three injectors, cam posisition sensor, as well as the 4-cyl coil pack (for future modification). I see no reason why this set-up will not work. If I can successfully locate and merge the coil pack driver code with the MPFI
code, I will attempt to run the engine with the coil pack, and using the distributer only for the cam and crank data.
Here are the scans (non-digitized) versions of the board: