Dynasty L4-153 2.5L SOHC VIN K TBI (1992)
Engine Control Module: Description and Operation
Monitored Circuits
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Input Signal Voltage - The PCM can determine if the circuit is open or shorted by comparing the input signal to the established range.
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Output Device Current Flow - The PCM senses whether the output device circuit is open, shorted to ground, or shorted to voltage.
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Oxygen Sensor Switching - The PCM can determine if the oxygen sensor is switching between rich and lean, once the system has entered
closed loop. SEE Computers and Control Systems/Description and Operation for an explanation of Closed Loop Operation.
