Power Transistor Continuity Check <Mpi; Ignition Coil (With Built-In Power Transistor) Check <Gdi - Mitsubishi MOTORS Space Runner 1999 Workshop Manual Supplement

16-38
+
– +
Distributor connector
–
+
ENGINE ELECTRICAL –
POWER TRANSISTOR CONTINUITY CHECK
<MPI>
–
1. An analogue-type circuit tester should be used.
1.5V
2. Connect the negative (–) prove of the circuit tester to
Caution
This test must be performed quickly (in less than 10
seconds) to prevent coil from burning and power transistor
from breakage.
Voltage: 1.5V
When current is
flowing
When current is
not flowing
Replace the power transistor if there is a malfunction.
IGNITION COIL (WITH BUILT-IN POWER
TRANSISTOR) CHECK <GDI>
1.5 V
–
+
PRIMARY COIL AND POWER TRANSISTOR CONTINUITY
CHECK
1. An analogue-type circuit tester should be used.
2. Connect the negative (–) prove of the circuit tester to
Caution
This test must be performed quickly (in less than 10
seconds) to prevent coil from burning and power transistor
from breakage.
Voltage: 1.5V
When current is
flowing
When current is
not flowing
SECONDARY COIL CHECK
Resistance check, etc. can not be used to check the secondary
coil of this ignition coil because a diode is built-in in the
secondary coil circuit. Because of this, check the secondary
coil by the following procedure.
1. Disconnect the ignition coil connector.
2. Remove the ignition coil, and then install a new spark
3. Connect the ignition coil connector.
Ignition System
terminal 2.
g Terminal No.
2
terminal 1.
g Terminal No.
1
plug to the ignition coil.
16300130104
3 4
16300120156
2 3