Accumulating Powertrain Control Module (PCM) Data: Notes
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Accumulating PCM data can be done in a number of ways. Gather as much data as possible when the malfunction is occurring to prevent misdiagnosis. Data should be accumulated in different operating conditions and based on the customer description of the intermittent fault. Acquisition of PCM parameter identification (PID) data using a diagnostic tool is one of the easiest ways to gather information.
For information on the functions of your diagnostic tool, refer to the manufacturer's manual for diagnostic tool instructions.
Below is a list of the functions available:
- Selecting and viewing PIDs
- Storing PIDs
- Recording measurements along with PIDs
- Playback of stored PIDs
- Peripheral inputs