Generator Output
WARNING: This page is about a different car, the 1998 Mazda Protege, 1998 Mazda Millenia, 1998 Mazda MPV, and 1998 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
On Protege, generator output is controlled by PCM. If a generator no charge or overcharge condition exists, check PCM DTCs. See appropriate G - TESTS W/CODE article in ENGINE PERFORMANCE section.
- Except Protege
Connect an ammeter (100-amp minimum) in-line between generator terminal "B" connector and terminal "B" of wiring harness connector. See Fig 1, Fig 2, Fig 3 or Fig 4 . Turn headlights and all accessories on. Depress brake pedal. Operate engine at 2500-3000 RPM. - Measure and record generator output. See GENERATOR MAXIMUM RATED OUTPUT table. If amperage is as specified, go to next step. If amperage is not as specified, repair or replace generator.
- Turn off headlights and all accessories. Release brake pedal. Operate engine at 2500-3000 RPM and measure amperage under no-load condition. No-load amperage should be 5 amps or greater. If amperage is as specified, go to next step. If amperage is not as specified, repair or replace generator.
- Operate engine at 2500-3000 RPM. Measure voltage between ground and terminals "S" and "L". If 14.1-14.7 volts does not exist, repair or replace generator. If 14.1-14.7 volts exists, generator output is okay.
GENERATOR MAXIMUM RATED OUTPUT
| Application | Amps | |
|---|---|---|
| Millenia | ||
| 2.3L | 78 | |
| 2.5L | 81 | |
| MPV | 70 | |
| 626 | ||
| 2.0L | 77 | |
| 2.5L | 90 | |
| Protege | 68 | |