NACE Automechanika

This class will use a variety of different case studies to focus on learning techniques to diagnose and repair ignition-related faults that lead to common misfire-related diagnostic trouble codes (DTCs) responsible for illuminating the Check Engine light. Emphasis will be placed on using diagnostic test equipment to pinpoint and validate the root cause of the problem. We will also discuss misfire concerns that do not set off the Check Engine light. Many intermittent misfire concerns are not regular enough to fail the OBD misfire monitor, so we will expand on tests that can be used to isolate these trying misfires.

This class will cover:

• Use of scan tool information to aid in diagnostics of misfire codes – P0300s
• Lab scope setup and analysis of ignition waveforms of all types
• Mode 6 (OBD-II) diagnostic overview
• How to interpret and analyze critical ignition input signals
• How to avoid replacing parts that are not the problem
• Recognize different manufacturers’ operational strategies during misfire conditions

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