CONTROL SYSTEM
01–40–39
01–40
GENERATOR CONTROL BLOCK DIAGRAM
CHU014000140S49
• The PCM determines the engine operation and electrical load conditions based on input signals, and controls
energization time of the generator field coil.
End Of Sie
GENERATOR CONTROL OPERATION
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Determination of Field Coil Excitation Time
• The PCM increases or decreases the field coil excitation current by sending a duty signal to the power
transistor built into the generator.
• The PCM changes the duty ratio of the duty signal to change the energization time of the power transistor. As a
result, field coil excitation current is changed. For example, when the battery positive voltage drops, the duty
ratio of the duty signal sent to the power transistor is larger, increasing the field coil excitation current.
PCM
TCM (LOCK UP CONDITION)
ECT SENSOR
IAT SENSOR
BRAKE SWITCH NO.1
(CAN SIGNAL)
VEHICLE SPEED SIGNAL
(CAN SIGNAL)
A/C AMPLIFIER (A/C SWITCH)
ECCENTRIC SHAFT POSITION
SENSOR
BATTERY POSITIVE VOLTAGE
GENERATOR
(TERMINAL P: STATOR COIL)
GENERATOR
(TERMINAL D: FIELD COIL)
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1 CYCLE
EXCITATION TIME
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