ECM/PCM Control of Ignition

PCM Inputs And Outputs:

Ignition Schematic:

The Powertrain Control Module (PCM) controls spark advance and fuel injection for all driving conditions. The PCM monitors input signals from the following components as part of its Ignition Control function to determine the required ignition timing:

^ Ignition Control Module (ICM).

^ Engine Coolant Temperature (ECT) sensor.

^ Manifold Absolute Pressure (MAP) sensor.

^ Transaxle Range (TR) switch.

^ Throttle Position (TP) sensor.

^ Vehicle Speed Sensor (VSS).

^ Knock sensor