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06 Mazda 6 2.3 cranks fine- no start after engine swap
Pulled 198K mile original engine for JDM 54K engine. (due to oil leak, engine running when pulled)
Has coil on plug technology
Used original engine harness -some sensors re-used other were from 54K engine.
I hear the fuel pump energize with key on. -Dash lights etc seems normal
No CEL/codes because battery was disconnected- had not codes before swap.
All fuses checked out OK via continuity.
Cranking sounds normal ( fresh battery)
Checked one plug for spark and no spark
Checked one injector with noid light and no light.
No schrader valve to check/confirm fuel pressure.
I swapped crank sensor with original (working ) one and same results.
Focusing on injection harness* -but no wiring diagram(s)
*Found one weak ground in the injector harness as the 12v test light was dim -compared to other grounds (brighter)
how do I know if the PCM is good?
What else would you check?
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