Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSDODGE AND RAM1992CARAVAN FWD V6-201 3.3LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTRELAYS AND MODULES - POWERTRAIN MANAGEMENTRELAYS AND MODULES - COMPUTERS AND CONTROL SYSTEMSENGINE CONTROL MODULEDESCRIPTION AND OPERATIONMONITORED CIRCUITS
1992 Dodge and Ram Caravan FWD V6-201 3.3L
Monitored Circuits
1992 Dodge and Ram Caravan FWD V6-201 3.3LSECTION 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.
- 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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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.