Mitsubishi ECLIPSE Technical Information Manual

ENGINE <TURBO> - Control System
1-77
GENERATOR CURRENT CONTROL
L
During the period the engine is in operation, the
engine ECM achieves duty control of the continuity
between generator terminal G and the ground. (In
this case, the OFF duty of terminal G is controlled
to equal the ON duty of the power transistor in the
voltage regulator.)
Operation of the headlights causes a sudden in-
crease in current consumption, but the engine ECM
suppresses a sudden increase in the generator out-
put current, thereby preventing the sudden in-
creases in electric load from abruptly reducing the
engine speed while the engine is running at idle.
(During the period before the generator generates
enough power, the battery current is additionally
supplied to the headlights, etc.) During the period
of approximately 0.5 seconds after the power steer-
ing pressure switch has been set to ON and also
during the period of approximately 0.5 seconds after
the selector lever has been changed over from the
N range to the D range, the engine ECM controls
generator terminal G in terms of 30% OFF duty
to suppress generation of power by the generator.
L
ECM
Engine coolant temperature sensor
Crankshaft position sensor
D
Air conditioning switch
D
Power steering pressure switch
D
Ignition switch-ST
D
N71EiK61AA
Under the following conditions, however, this control
is not achieved.
l High engine speed
l Engine coolant ternperature 50°C or lower
l Air conditioner swiitch ON
l More than 0.5 seconds after the power steering
pressure switch has been set to ON
o More than 0.5 seconds after the selector lever
has been changed over from “N” to “D”
l Three seconds or less after the engine has been
started
When a high signal at generator terminal FR lasting
for more than 20 seconds is input to the engine
ECM during operation of the engine, the engine
ECM determines that the generator terminal FR
circuit has been open-ciircuited and stores diagnostic
trouble code (No. P1500) in memory, and places
generator terminal G iin the always OFF state.
Generator G terminal
Generator FR terminal
I
-I
llrEl
FR G
Generator
1 FUO907
id

Mitsubishi ECLIPSE Specifications

General

Brand	Mitsubishi
Model	ECLIPSE
Category	Automobile
Language	English