A6 - Under Voltage Test

^ Disconnect EVR.

^ Measure resistance between F terminal of EVR harness connector and ground.

^ Resistance should be more than 3.0 ohms.

Less than 3.0 ohms -- Service grounded field circuit. Check wiring and alternator. Go to A2. A2 - Base Voltage and No-Load Test

More than 3.0 ohms -- Go to A7. A7 - Jumper Terminals A to F