Generator current inspection

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

NOTE:

Since the charging current decreases rapidly after starting the engine, apply the following procedure quickly, and read the maximum current value.

Verify that the battery is fully charged.
Verify that the assembly condition of the drive belt is normal. (See DRIVE BELT INSPECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
Disconnect the negative battery cable.
Connect a tester, which can read 120 A or more, between generator terminal B and generator terminal B cable.
Connect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION [SKYACTIV-G 2.0, SKYACTIV-G 2.5] .)
Turn off all electrical loads.
Start the engine.
NOTE:
- When the electrical load on the vehicle is low, the specified current cannot be verified although the generator is normal. In this case, increase the electrical load (Leave the headlights turned on for a while, then discharge the battery, or use a similar method.) and recheck.
- If the generator itself or the ambient temperature are too high, the specified current also cannot be verified. In this case, cool down the generator and recheck.
With the electric loads such as headlights, blower motor, rear window defroster, brake lights turned on, verify that the current increases.
- If not as specified, replace the generator. (See GENERATOR REMOVAL/INSTALLATION [SKYACTIV-G 2.0, SKYACTIV-G 2.5 (WITH i-ELOOP)] .)

Generator generated current maximum value (with i-ELOOP) (reference value) [Ambient temperature: 20 °C {68 °F}, Engine hot]

ENGINE SPEED, VOLTAGE AND OUTPUT CURRENT

Engine speed (rpm)	Terminal 1A voltage (V)	Generator output current (A)
1, 000	15	130
2, 000	15	150