Turn off the ignition and disconnect the battery negative terminal
Locate the ignition coil
Disconnect the coil electrical connectors
Set the multimeter to ohms
Measure primary resistance across the coil primary terminals
Compare the reading to the manufacturer specification
Measure secondary resistance between the high-voltage terminal and the primary terminal
Compare the reading to the manufacturer specification
Check for continuity between coil terminals and ground
Set the multimeter to voltage
Reconnect the battery
Turn the ignition key to ON
Check for power at the coil positive terminal
Check for ground signal at the coil control terminal while cranking
Inspect for open circuit, short circuit, or out-of-spec readings
Replace the ignition coil if readings are outside specification