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.
2012 Scion iQFACTORY OEM SERVICE PROCEDURE
Service Data
FOR 80A TYPE
| Battery | Standard voltage | 12.5 to 12.9 V at 20°C (68°F) |
| Charging circuit without load | Standard current | 10 A or less |
| Standard voltage | 12.1 to 15.4 V | |
| Charging circuit with load | Standard current | 30 A or more |
| Generator brush holder assembly brush exposed length | Standard exposed length | 9.5 to 11.5 mm (0.374 to 0.453 in.) |
| Minimum exposed length | 4.5mm (0.177 in.) | |
| Generator rotor assembly resistance | Slip ring - Slip ring | 1.7 to 2.1 Ω at 20°C (68°F) |
| Slip ring - Rotor | 10 MΩ or higher | |
| Generator rotor assembly slip ring diameter | Standard diameter | 14.2 to 14.4 mm (0.559 to 0.567 in.) |
| Minimum diameter | 14.0 mm (0.551 in.) | |
| Generator drive end frame resistance | Coil lead - Coil lead | Below 1Ω |
| Coil lead - Drive end frame | 10 kΩ or higher | |
| Generator holder with rectifier resistance | P1, P2, P3 - B | Resistance of below 1 Ω in one direction but 10 kΩ or higher in the other direction. |
| P1, P2, P3 - E | Resistance of below 1 Ω in one direction but 10 kΩ or higher in the other direction. | |
| Generator regulator assembly resistance | Terminals F - Terminals B | When the positive and negative poles between terminals F and B are exchanged, there is a resistance of below 1 Ω in one direction but 10 kΩ or higher in the other direction. |
| Terminals E - Terminals F | When the positive and negative poles between terminals E and F are exchanged, there is a resistance of below 1 Ω in one direction but 10 kΩ or higher in the other direction. |
FOR 100A TYPE
| Battery | Standard voltage | 12.5 to 12.9 V at 20°C (68°F) |
| Charging circuit without load | Standard current | 10 A or less |
| Standard voltage | 12.1 to 15.4 V | |
| Charging circuit with load | Standard current | 30 A or more |
| Generator brush holder assembly brush exposed length | Standard exposed length | 9.5 to 11.5 mm (0.374 to 0.453 in.) |
| Minimum exposed length | 4.5 mm (0.177 in.) | |
| Generator rotor assembly resistance | Slip ring - Slip ring | 2.3 to 2.7 Ω at 20°C (68°F) |
| Slip ring and rotor | 10 MΩ or higher | |
| Generator rotor assembly slip ring diameter | Standard diameter | 14.2 to 14.4 mm (0.559 to 0.567 in.) |
| Minimum diameter | 14.0 mm (0.551 in.) |
Factory Service Tools
Use the Manual With the Right Hardware
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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.