Mustang GT V8-4.6L SOHC VIN X (1998)
Battery: Testing and Inspection
Battery Load Test
1. With the engine running, turn the air conditioner on (if equipped) the blower motor on high speed and the headlamp bulbs on high beam.
2. Increase the engine speed to approximately 2000 rpm. The voltage should increase a minimum of 0.5 volt above the base voltage. If the voltage
does not increase as specified.
If the voltage increased as specified, the charging system is operating normally. Proceed to the following battery tests.
Field Circuit Drain-Alternate Test Method
Use Rotunda Power Sensor Plus Electronic Battery Tester 162-R0002 or equivalent. Follow the manufacturer's defined test procedure.
