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 Mitsubishi Lancer Evolution MRFACTORY OEM SERVICE PROCEDURE

ASC Off Switch Continuity Check

As shown in the illustration, connect the circuit tester to the ASC OFF switch as a single unit.

Check the continuity of when the ASC OFF switch is pressed and released.

ASC OFF SWITCH ITEM CHART

Item	ASC OFF switch is released (not operated)	ASC OFF switch is pressed
Continuity between terminal No. 1 and No. 2	No continuity	Continuity exists (2Ω or less)
Continuity between terminal No. 3 and No. 4	Continuity exists	Continuity exists

Fig 1: Checking Continuity Between ASC OFF Switch Connector Terminals

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.

Factory Service Tools

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.

Shop Manual-Ready Tools Compare Repair Quote Quote Shield Pro

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.