DR-18B Checking Power Module Circuit

1. Place ignition switch in Off position, then connect power module 10-way electrical connector.
2. Disconnect power module 12-way electrical connector.
3. Connect a voltmeter between alternator F2 terminal and ground.
4. Place ignition switch in Run position.
NOTE: The alternator field terminals of the engine wiring harness (F1 and F2) on the Shelby Charger are interchangeable. Therefore, it will be necessary to identify which one is F1 (Ignition switchfeed) and which one is F2 (Field control to power module) before performing the tests.
5. If voltmeter reading is within 1 volt of battery voltage, proceed to Test 18 step C.
6. If voltmeter reading is 0 to 1 volt, replace power module.