Generator Current

WARNING: This page is about a different car, the 2002 Mazda 626. However, it is still accessible from the selected car via links, so may be relevant.

Verify battery is fully charged. Charge as necessary
Verify that the drive belt deflection/tension is within the specification. See BELT DEFLECTION under ADJUSTMENTS. Adjust as necessary.
Disconnect the negative battery cable.
Connect a circuit tester, capable of reading 120 volts or more between generator terminal "B" and the wiring harness.
Connect the negative battery cable.
Turn all electrical loads off.
Start the engine and increase the engine speed to 2000-2500 RPM.
Turn the headlights, blower motor and rear window defroster on, and verify the current reading increases.

NOTE: Current required for generating power varies with electrical loads applied.

Turn headlights (high-beam), blower motor (high), rear window defroster and brake lights on and verify that the current reading increases. If generator terminal "B" current does not increase, repair or replace the generator if necessary. See GENERATOR AMPERAGE table.
Standard current (reference) - Measuring conditions:
- Room temperature: 68°F (20°C).
- Voltage: 13.5 volts.
- Engine hot.

GENERATOR AMPERAGE

Application

Terminal "B" @ 1000 RPM - Amps ⁽¹⁾

Terminal "B" @ 2000 RPM - Amps ⁽¹⁾

2.0L

2.5L

⁽¹⁾	Lower limit of current must be more than zero amps.