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Generator Output

  1. Connect an ammeter (100-amp minimum) in-line between generator terminal "B" connector and terminal "B" of wiring harness connector. See Fig 1. Turn headlights and all accessories on. Depress brake pedal. Operate engine at 2500-3000 RPM.
  2. If amperage is not as specified, see GENERATOR MAXIMUM RATED OUTPUT table, repair or replace generator as necessary. If amperage is as specified, turn off headlights and all accessories. Release brake pedal. Operate engine at 2500-3000 RPM. If amperage is not about 5 amps or more, repair or replace generator as necessary.
  3. If amperage is about 5 amps or more, measure voltage between ground and terminals "S" and "L" while operating engine at 2500-3000 RPM. If 14.1-14.7 volts is not present, repair or replace generator as necessary. If 14.1-14.7 volts is present, generator output is okay.
GENERATOR MAXIMUM RATED OUTPUT

Application Amps
Protege 65
Fig 1: Identifying Generator Terminals (Protege)
G93E00707Courtesy of MAZDA MOTORS CORP.
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