Comprehensive Component Monitor Diagnostic

Comprehensive component monitoring diagnostics are required to monitor emissions-related input and output Powertrain components. The CARB OBD II Comprehensive Component Monitoring List of Components Intended To Illuminate The MIL is a list of components, features or functions that could fall under this requirement.

INPUT COMPONENTS
The Control Module monitors the input components for circuit continuity and out-of-range values. This includes performance checking. Performance checking refers to indicating a fault when the signal from a sensor does not seem reasonable (i.e. a Throttle Position (TP) sensor that indicates high throttle position at low engine loads or MAP voltage). The input components may include but are not limited to the following sensors:
^ The Vehicle Speed Sensor (VSS)
^ The Crankshaft Position (CKP) sensor
^ The Knock Sensor (KS)
^ The Throttle Position (TP) sensor
^ The Engine Coolant Temperature (ECT) sensor
^ The Camshaft Position (CMP) sensor
^ The Manifold Absolute Pressure (MAP) sensor
^ The Mass Air Flow (MAF) sensor In addition to the circuit continuity and rationality check, the ECT sensor is monitored for its ability to achieve a steady state temperature to enable closed loop fuel control.

OUTPUT COMPONENTS
Diagnose the output components for the proper response to control module commands. Components where functional monitoring is not feasible will be monitored for circuit continuity and out-of-range values if applicable.

Output components to be monitored include, but are not limited to the following circuits:
^ The Idle Air Control (IAC) Motor
^ The Control Module controlled EVAP Canister Purge Valve
^ The Electronic transaxle/transmission controls
^ The A/C relay
^ The Cooling Fan(s) Relay(s)
^ The VSS output
^ The MIL control
^ The Cruise Control inhibit
^ The AIR system pump

COMPONENTS INTENDED TO ILLUMINATE MIL
California Air Resources Board (CARB) OBD II Comprehensive Component Monitoring List of Components Intended to Illuminate MIL.
^ Transaxle/Transmission Range (TR) Mode Pressure Switch
^ Transaxle/Transmission Turbine Speed Sensor (HI/LO)
^ Transaxle/Transmission Vehicle Speed Sensor (HI/LO) Transaxle/Transmission
^ Vehicle Speed Sensor (HI/LO)
^ Ignition Sensor (Cam Sync, Diag)
^ Ignition Sensor Hi Res (7x)
^ Knock Sensor (KS)
^ Engine Coolant Temperature (ECT)
^ Intake Air Temperature (IAT) Sensor
^ Throttle Position (TP) Sensor A, B
^ Manifold Absolute Pressure (MAP) Sensor
^ Mass Air Flow (MAF) Sensor
^ Automatic Transaxle/Transmission Temperature Sensor Transaxle/Transmission Torque Converter Clutch (TCC) Control Solenoid
^ Transaxle/Transmission TCC Enable Solenoid Transaxle/Transmission Shift Solenoid A
^ Transaxle/Transmission Shift Solenoid B Transaxle/Transmission 3/2 Shift Solenoid
^ Ignition Control (IC) System
^ Idle Air Control (IAC) Coil
^ Evaporative Emission Purge Vacuum Switch
^ Evaporative Emission Canister Purge (EVAP Canister Purge)