Comprehensive Component Monitoring

Requirements
Comprehensive component monitoring diagnostics are required to monitor the operation of those inputs and outputs to powertrain components whose failure or malfunction would increase emissions to more than 1.5 times FTP standards.

Input Components
Input components are to be monitored for a minimum circuit continuity and out of range values. Input components for a TRIONIC vehicle include:

^ Manifold absolute pressure sensor
^ Intake air temperature sensor
^ Engine Coolant Temperature sensor
^ Throttle position sensor
^ Knock sensor (TRIONIC calculates knock, there is no actual sensor)
^ amshaft position sensor (TRIONIC calculates this information)
^ Crankshaft position sensor
^ EVAP pressure sensor (900)
^ Vehicle speed
^ Battery voltage
^ Brake light switch
^ CHECK ENGINE request from the 900 automatic transmission control module
^ 900 Automatic transmission sensors





Output Components
Output components are monitored for proper response to ECM commands. Components for which functional monitoring is not feasible will be monitored for circuit continuity and out of range values, if applicable. Output components for a TRIONIC vehicle include:

^ EVAP canister close valve (900)
^ EVAP canister purge valve
^ Idle air control valve
^ Boost pressure control valve
^ 900 Automatic transmission solenoids

As examples of comprehensive component monitoring, the idle air control (IAC) system monitoring, EVAP system monitoring and engine coolant monitoring (ECT) diagnostics are described. For diagnostic theory, enabling and malfunction criteria for all the other components on this list refer to the shop manual.