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Home >> Chrysler >> 1992 >> Imperial V6-231 3.8L VIN L FI >> Repair and Diagnosis >> Powertrain Management >> Relays and Modules - Powertrain Management >> Relays and Modules - Computers and Control Systems >> Engine Control Module >> Description and Operation >> Monitored Circuits
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Monitored Circuits

- Input Signal Voltage - The PCM can determine if the circuit is open or shorted by comparing the input signal to the established range.

- Output Device Current Flow - The PCM senses whether the output device circuit is open, shorted to ground, or shorted to voltage.


- 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.


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