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Home >> Dodge and Ram >> 2004 >> Neon SXT, Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Electronic Control Modules >> Powertrain Control Module >> Description >> Operation - Data Bus Communication Receive - Pcm Input

Operation - Data Bus Communication Receive - Pcm Input

The PCM uses the SCI communication bus to preform engine diagnostics and flash operations. The transmission side of the PCM uses the SCI communication bus to flash new software. However, diagnostics is performed via the vehicles J1850 bus for the transmission side of the PCM.

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