If the wiring on the tan/blk and the white wire to ignition module is ok (continuity), then suspect either the ignition module or the ECM. Especially the ecm if it stalls a lot. Only a waveform test on a scope during a stall event can prove if the ECM is faulty. The rest is ecm resistance expectations from the ignition module not being met. Lower quality ignition modules can cause false code 42 when they become thermally fatigued also.
This is where the "test with known good part" kicks in.