15A No Code 88 System Power Circuit

1. Turn ignition switch to Off position.
2. Connect a digital voltmeter between red logic module connector terminal No. 1 and ground, then turn ignition switch to Run position.
3. If voltmeter reads at least 4.5 volts, proceed to Test 15 step B.
4. If voltmeter indicates no voltage, proceed to Test 15 step F.