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.
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HOMESERVICE MANUALSMITSUBISHI2009LANCER L4-2.4L (4B12)REPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSSERVICE PRECAUTIONSACTIVE SKID CONTROL SYSTEM (ASC)
2009 Mitsubishi Lancer L4-2.4L (4B12)
Active Skid Control System (ASC)
2009 Mitsubishi Lancer L4-2.4L (4B12)SECTION Active Skid Control System (ASC)
IN THE EVENT OF A DISCHARGED BATTERY
WARNING
If the ASC is not operating, the vehicle will be unstable during braking, Do not drive the vehicle with the ASC-ECU connector disconnected or with the ASC not operating.
If the engine is started using a booster cable when the battery is completely flat, and the vehicle is then driven without waiting for the battery to be recharged, the engine may misfire and it may not be possible to drive the vehicle. This is because the ASC consumes a large amount of current when carrying out its initial checks. If this happens, recharge the battery fully.
WARNING
If the ASC is not operating, the vehicle will be unstable during braking, Do not drive the vehicle with the ASC-ECU connector disconnected or with the ASC not operating.
If the engine is started using a booster cable when the battery is completely flat, and the vehicle is then driven without waiting for the battery to be recharged, the engine may misfire and it may not be possible to drive the vehicle. This is because the ASC consumes a large amount of current when carrying out its initial checks. If this happens, recharge the battery fully.
RENDER: 1.0x
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.