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Home >> Ford >> 1990 >> Thunderbird Base >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel - Electronic >> Description & Operation >> Voltmeter

Description & Operation: Voltmeter

Voltmeter gauge displays battery voltage from 9-17 volts. If alternator is not charging battery sufficiently or if system voltage goes too high or too low, ISO symbol warning indicator flashes, and cluster warning tones are sounded by a remote warning chime module.

Fig 1: Identifying Electronic Instrument Cluster (EIC) & Cluster Control Button Switches
G90F01101Courtesy of FORD MOTOR CO.
Fig 2: Instrument Display Diagnostic Chart
G91B08394Courtesy of FORD MOTOR CO.