Mazda RX-8 Manual page 448

Current required for generating power varies with electrical loads applied.
•
Reference value
Current possible for power generation (differs according to load)
o
[Conditions] ambient temperature 20° ° ° ° C {68 ° ° ° ° F}, voltage 13.0    15.0 V, engine warm
o
Engine speed (rpm) Terminal B current (A)
1,000 0*  70
2,000 0*  97
*
The lower limit must be more than 0 A.
Generator Inner Parts
Rotor
1. Measure the resistance between the slip rings using an ohmmeter.
If not as specified, replace the rotor.
•
Resistance [20 ° ° ° ° C {68 ° ° ° ° F}]
1.62.0 ohms
o
2. Verify that there is no continuity between the slip ring and core using an ohmmeter.
(w) Engine Specifications
Page 211