Rodeo S 2WD L4-2.2L (1999)
Engine Control Module: Description and Operation
PCM Components
The PCM is designed to maintain exhaust emission levels to government mandated standards while providing excellent driveability and fuel efficiency.
The PCM monitors numerous engine and vehicle functions via electronic sensors such as the throttle position (TP) sensor, heated oxygen sensor (HO2S),
and vehicle speed sensor (VSS). The PCM also controls certain engine operations through the following:
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Fuel injector control
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Ignition control module
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Evaporative emission (EVAP) purge
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A/C clutch control
