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• Engine Coolant Temperature Sensor • Fuel Level Sensor (Bus message) • Ignition Switch • Intake Air Temperature Sensor • Knock Sensor • Evaporative System Integrity Monitor • Manifold Absolute Pressure (MAP) Sensor • Oil Pressure Switch • Oxygen Sensors • Power Steering Pressure Switch • Speed Control Switches • Vehicle Speed Sensor (MTX-equipped models) NOTE: PCM Outputs: • Air Conditioning Clutch Relay • Charging Indicator Lamp (Bus Message) • Proportional Purge Solenoid • Fuel Injectors • Generator Field • Ignition Coils • Malfunction Indicator (Check Engine) Lamp (Bus Message) • Manifold Flow Valve • Oxygen Sensors Heater Controls • Variable Valve Timing • Vehicle Speed (Manual Transmission) Based on inputs it receives, the PCM adjusts fuel injector pulse width, idle speed, ignition spark advance, ignition The PCM adjusts injector pulse width (air-fuel ratio) based on the following inputs. • Battery voltage • Coolant temperature • Exhaust gas content (oxygen sensor) • Engine speed (crankshaft position sensor) • Intake air temperature • Manifold absolute pressure • Throttle position The PCM adjusts ignition timing based on the following inputs. • Coolant temperature • Engine speed (crankshaft position sensor) • Knock sensor • Manifold absolute pressure • Throttle position • Transmission gear selection (park/neutral switch) • Intake air temperature The PCM also adjusts engine idle speed through the idle air control motor based on the following inputs. • Air conditioning sense • Battery voltage • Brake switch PM ELECTRONIC CONTROL MODULES - SERVICE INFORMATION 8E - 187 |