Description
This eLearning course reviews how the PCM uses the CKP and CMP inputs to run misfire detection. The misfire monitor is one of the continuously ran Onboard Diagnostics (OBD) monitors whose logic is stored within the PCM. Engine misfires can lead to excessive hydrocarbon emissions and are mandated by the Federal Government to be detected by the vehicle’s engine management system. The reliability of this system is critical. The PCM uses the CKP and CMP sensors as its primary inputs to detect engine misfire.
Objectives
Areas covered:
• Misfire detection logic employed by the PCM
• Relationship between the CKP and CMP
• How a misfire DTC sets
• Differentiate between a Type A and Type B misfire
• Identify when a CKP relearn is necessary to be performed
Certificate
By completing/passing this course, you will attain the certificate Garage Gurus Certificate
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