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.
System Description: Overview: Notes
The active control engine mount (ACM) system reduces the amount of engine vibration which is transmitted to the passenger's compartment.
The ACM system consists of the engine mount actuators, the engine mount control unit, and the PCM.
The PCM receives the engine vibration signal from the CKP sensor and the CMP sensor, then sends the signal which is in phase with the predicted engine vibration to the engine mount control unit.
The engine mount control unit sends current for driving the ACM actuator to the actuator and it operates the plunger to reduce the amount of engine vibration.
The ACM changes the engine mount firmness with the actuator and the plunger.
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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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