Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Ignition Coil: Testing and Inspection
Tester J-24624 is required to test the module. If this tester is not available, and malfunction still exists after performing the following checks, replace
module.
Fig. 3 Ignition coil test connections
IGNITION COIL TEST
1.
Connect ohmmeter as shown in step 1, Fig. 3, and set meter on high scale. Meter should indicate very high or infinite resistance. If not, coil is
defective.
2.
Connect ohmmeter as shown in step 2, Fig. 3, and set meter on low scale. Meter should indicate low or no resistance. If not, coil is defective.
3.
Connect ohmmeter as shown in step 3, Fig. 3, and set meter on high scale. If meter indicates infinite resistance, coil is defective.
