GENERATOR CONTROL
MULTIPORT FUEL SYSTEM (MFI)13A-51
GENERATOR CONTROLM2132025000172
During engine idle operation, ECM controls duty of
conduction between generator G terminal and
ground. (G terminal duty is controlled to be the same
as ON duty of the power transistor inside the voltage
regulator). If headlights etc. are turned on while
engine is idling, the consumed current increases
suddenly, but by gradually increasing the generator G terminal OFF duty, ECM restricts sudden increase
in generator's output current and output current is
increased only gradually. (Battery current is supplied
to the headlamp etc. till generator produces sufficient
current.) Thus, ECM prevents change in idle speed
due to sudden increase of engine load.
AK602242 AD
Engine coolant temperature sensor
Generator G terminal
Generator FR terminal
Generator Crankshaft position sensor
A/C switch (CAN)
Ignition switch-STECM
EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT PURGE FLOW MONITOR
MULTIPORT FUEL SYSTEM (MFI)13A-52
EVAPORATIVE EMISSION CONTROL SYSTEM INCORRECT
PURGE FLOW MONITOR
M2132027200019
The ECM detects whether the fuel vapor leakage
exists or not from the evaporative emission control
system. By the specified pattern within the certain
operation range, the ECM drives the evaporative
emission purge solenoid and the evaporative emis
-
sion ventilation solenoid. This allows slight vacuum
to be produced in the fuel tank.
The ECM measures the vacuum condition through
the fuel tank differential pressure sensor signal. By
comparing the normal (expected) value and the
actual value, the ECM detects whether the fuel vapor
leakage exists or not from the evaporative emission
control system.
AK604139
Evaporative emission
purge solenoid
Evaporative emission
ventilation solenoid
Fuel tank differential pressure sensor
Fuel tank temperature sensor
AB
BatteryMFI relay
ECM Mass airflow sensor
Barometric pressure sensor
Intake air temperature sensor
Engine coolant
temperature sensor
Fuel level sensor (CAN)Fuel
tank
Fuel level
sensor To injector
