Daytona IROC V6-181 3.0L SOHC VIN 3 FI (1992)
PCM INPUT:
Powertrain Control Module (PCM) recognizes an abrupt increase in throttle opening, (TPS voltage increase), or drop in engine vacuum, (MAP
sensor voltage increase), as a demand for increased engine output to accelerate vehicle.
PCM OUTPUT:
PCM increases injector pulse width to accommodate increased fuel demand.
Deceleration
PCM MONITORS:
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Engine Temperature (ECT Sensor)
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Manifold Vacuum (MAP Sensor)
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Engine rpm (distributor pick-up)
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Throttle Position (TPS)
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Exhaust Gas Oxygen Content (HO2S)
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A/C Switch Status
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Battery Voltage
UNDER NORMAL DECELERATION, PCM:
Continues normal (reduced) injection.
De-energizes EGR system, by grounding Electronic EGR Transducer (EET) solenoid.
UNDER HARD DECELERATION, (CLOSED THROTTLE AND ABRUPT INCREASE IN MANIFOLD VACUUM) THE PCM:
Ignores oxygen sensor input, and initiates fuel cut-off strategy, firing injector only once per engine revolution.
Disables EGR system, by grounding EGR solenoid.
Disables EVAP purge system, by grounding EVAP solenoid.