Operation Section
-74-
G643 Electronic Controlled LP Engines (If Equipped)
General Description
Engine speed is monitored by the SECM through a
variable reluctance (VR) sensor. Intake manifold air
temperature and absolute pressure is monitored
with a (TMAP) sensor. The EMS is a drive by wire
(DBW) system connecting the accelerator pedal to
the electronic throttle through the electrical harness,
mechanical cables are not used. A throttle position
sensor (TPS) monitors throttle position in relation to
the accelerator pedal position sensor (APP)
feedback. Even engine coolant temperature and
adequate oil pressure is monitored by the SECM.
The SECM controller has full adaptive learning
capabilities, allowing it to adapt control function as
operating conditions change. Factors such as
ambient temperature, fuel variations, ignition
component wear, clogged air filter, and other
operating variables are compensated.
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