8-20
Electrical System
4st 25/30 2022
4. Start the engine and check the spark. Check the ignition
system if the sparks are weak.
Spark Tester:
P/N. 3F3-72540-0
•
When testing, install the electrode cap
properly so as to prevent leaks and
contact with the wiring of the spark
tester, and perform the test carefully.
•
Keep flammable gas, fuel, and oils away,
because testing generates sparks.
2) Inspection of the Plug Cap
Plug Cap Resistance:
WRNї
Spark Performance:
10 mm (0.4 in) or greater
Remove the part to test it as a separate unit.
1. Disconnect the plug cap from the spark plug.
2. Remove the plug cap from the high tension cable.
3. Measure the plug cap resistance. Replace it if the value is
not as specified.
•
This test can be conducted without removing
the part.
•
The ignition coil operation test can be
conducted using the "Running (Drop) Test" of
the diagnosis system.
4. The Ignition System and the
Ignition Control System
1) Inspection of the Ignition Spark
1. Disconnect the plug cap from the spark plug.
2. Connect the plug cap to a spark tester.
3. Connect the spark tester clip to the spark plug tip
electrode.
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