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.
Operating Conditions: Notes
- Engine start:
The IMA system drives the IMA motor and starts the engine during normal starts and when re-starting from an idle stop.
The IMA motor is linked directly to the engine crankshaft.
- Start running:
The IMA motor assists the engine.
- Slow acceleration:
Runs only with the engine.
- Low speed cruise:
At a constant speed of about 25 mph (40 km/h) with light load, all engine cylinders are deactivated, and the vehicle runs only with the IMA motor. When the state-of-charge (SOC) drops, the engine starts and the IMA motor begins to charge the battery module.
- Acceleration:
The IMA motor assists the engine.
- High acceleration:
The IMA motor assists the engine.
- High speed cruise:
Runs only with the engine. When the state-of-charge drops, the IMA motor begins to charge the battery module.
- Deceleration:
All engine cylinders are deactivated, and the IMA motor captures the deceleration energy and charges the battery module.
- Stop:
When conditions are satisfied, the PCM stops the engine automatically (auto stop).
NO RELATED
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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.