Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2003 Infiniti M45FACTORY OEM SERVICE PROCEDURE
Generator Specifications
GENERATOR SPECIFICATIONS
| Application | Specification | |
|---|---|---|
| Generator Model | A3TG0391, MITSUBISHI | |
| Nominal Rating | 12 Volts, 110 Amps | |
| Minimum RPM Under No Load (With 13.5 Volts Applied) | 1000 RPM | |
| Hot Output Current (With 13.5 Volts Applied) | ||
| At 1300 RPM | 31 Amps | |
| At 2500 RPM | 90 Amps | |
| At 5000 RPM | 102 Amps | |
| Regulated Output Voltage | 14.1-14.7 Volts | |
| Minimum Brush Length | .197 in. (5.00 mm) | |
| Brush Spring Pressure | 17.28-21.51 ozs. (4.8-6.1 N) | |
| Slip Ring Minimum Outer Diameter | .870 in. (22.1 mm) | |
| Rotor (Field Coil) Resistance | 1.7-2.1 Ohms | |
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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