Engine Control Module (ECM)

The engine control module (ECM) controls all ignition system functions and constantly corrects the spark timing. The ECM monitors information from various sensor inputs that may include the following components, if applicable:

• Throttle position sensor
• Engine coolant temperature (ECT) sensor
• Mass air flow (MAF) sensor
• Intake air temperature (IAT) sensor
• Battery
• Transmission gear position or range information sensors
• Engine knock sensor
• Instrument Cluster
• Crankshaft position sensor (POS)
• Camshaft position sensor (PHASE)