1999 BMW 328is AutomaticFACTORY OEM SERVICE PROCEDURE

Powertrain Control Module (Pcm): V8

A/C Compressor Control, Acceleration Enrichment, Cold Start Control, Deceleration Fuel Cut, Fuel Injection Control, Fuel Tank Vent (Evaporation) Control, Idle Speed Control, Ignition Timing Control and Anti-Knock Function, Ignition Timing/Fuel Injection Intervention Via Anti-Theft System (DWA) and On-Board Computer, Oxygen (Sensor) Control, Rear Window Defogger, Relay Controls and Self-Diagnostics.

NOTE: Components are grouped into 2 categories. The first category covers INPUT DEVICESΒ , which control or produce voltage signals monitored by PCM. The second category covers OUTPUT SIGNALSΒ , which are components controlled by PCM.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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