Ignition Coil And Ignition Power Transistor - Mitsubishi 1989-1993 GALANT Service Manual

FUEL SYSTEM <SOHC-8 VALVE>

IGNITION COIL AND IGNITION POWER TRANSISTOR

OPERATION
When the ignition power transistor unit is
l
switched ON by the signals from the engine
control module, the primary current of the igni-
will flow. When the ignition power tran-
tion coil
sistor unit is switched OFF, the primary current
flow is interrupted, and high voltage is produced
at the secondary coil.
When the engine control module switches OFF
l
INSPECTION
Using Scan tool
Data reading 44
Distributor
. .
conditions
. Engine: warm up
Ignition
. Timing light: set
advance
(Use the timing light to
check the
timing.)
Component side
Tachc Imeter
the power transistor within the unit, the battery
voltage within the unit is applied to the ignition
power transistor unit, and the ignition power
transistor unit is switched ON. In addition, the
power transistor unit is switched OFF when the
engine control module switches ON the power
transistor within the unit.
750 rpm (idling)
actual
2,000 rpm
Harness side
connector
Harness side
timing
adjustment