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D=._ 35
Test Number 23--Ignition Coil
Refer to Test Number 9--OhmsTest
(sections I-7) for Ohmmeter use.
IGNITION COIL PRIMARY RESISTANCE TEST
I.
Set the Range Slide Switch to the OHMS X I position.
2.
Remove the primary wires from both coil terminals.
3.
Connect the RED and BLACK test leads to primary coil terminals, as
illustrated in Figure 42.
4.
Observe reading on the Low Ohms scale, then re-connect primary wires.
BLACK
Ao
B4
FIGURE 42
PRIMARY RESISTANCE
TEST CONNECTIONS
The reading should meet the vehicle manufacturer's specifications
Generally, the coil primary winding resistance should be between I and
2 ohms. Check your vehicle service manual for the exact value.
if the reading is substantially above or below the manufacturer's
specifications, the ignition coil is defective and should be replaced.
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