Inspection Of Igniter; Check Power Source Line Voltage; Check Power Transistor In Igniter - Toyota 7M-GE Repair Manual

IGNITION SYSTEM
- On-Vehicle Inspection (7M-GTE)
lG4::7:
Voltmeter
4-x
: .
's...
Ohmmeter
IFal
Ohmmeter
Ohmmeter
IGOW
A B C-
INSPECTION -bF IGNITER
i
1.
CHECK POWER SOURCE LINE VOLTAGE
(a) Disconnect the connector 6-P.
(b) Turn the ignition switch ON.
(c) Using a voltmeter, connect the positive (+I probe to
the terminal 3 of harness side and negative (-1 probe
to the body ground.
Voltage: Approx. 12 V
(d) Connect the connector 6-P.
2. CHECK POWER TRANSISTOR IN IGNITER
(a)
(b)
(c)
(d)
(e)
(f)
(d
(h)
(i)
(j)
(k)
Disconnect the connector 4-P.
Disconnect each ignition coil from its connector.
Turn the ignition switch ON.
Using an ohmmeter, connect terminal 2 of the igni-
tion coil C and body ground.
Using a 3 V dry cell battery, apply voltage to terminal
2 of the connector 4-P.
As voltage is applied, check that there is momentary
continuity.
Using an ohmmeter, connect terminal 2 of the igni-
tion coil A and body ground.
Using a 3 V dry cell battery, apply voltage to terminal
4 of the connector 4-P.
With terminal 4 connected apply voltage to terminal
2 of connector 4-P.
As you apply voltage, check that there is momentary
continuity.
Using an ohmmeter, connect terminal 2 of the igni-
tion coil B and body ground.
Using a 3 V dry cell battery, apply voltage to terminal
3 of the connector 4-P.
With terminal 3 connected apply voltage to terminal
2 of connector 4-P.
As you apply voltage, check that there is momentary
continuity.