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.
2003 Mitsubishi Lancer EvolutionFACTORY OEM SERVICE PROCEDURE
Component Testing: Rectifier
- Check the condition of the positive heat sink by checking continuity between the positive heat sink and each of the stator coil lead connecting terminals. If continuity is present for both terminals, the diode is shorted. Replace the rectifier assembly. See Fig 1 .
- Check the condition of the negative heat sink by checking continuity between the negative heat sink and each of the stator coil lead connecting terminals. If continuity is present in both directions, the diode is shorted. Replace the rectifier assembly. See Fig 2 .
- Check the condition of the diode trio by testing continuity of each of the 3 diodes using a circuit tester connected to both sides of the diode. If the same reading results for both polarities, the diode is defective. Replace the rectifier assembly if any of the diodes are defective. See Fig 3 .
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.
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.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.