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 MANUALSMITSUBISHI2004LANCER L4-2.4L SOHCREPAIR AND DIAGNOSISWINDOWS AND GLASSHEATED GLASS ELEMENTTESTING AND INSPECTION
2004 Mitsubishi Lancer L4-2.4L SOHC
Heated Glass Element: Testing and Inspection
2004 Mitsubishi Lancer L4-2.4L SOHCSECTION Testing and Inspection
REAR WINDOW DEFOGGER DIAGNOSIS
The rear window defogger is controlled by the A/C-ECU. For troubleshooting, refer to Manual A/C Diagnosis.
PRINTED-HEATER LINES CHECK
1. Run engine at 2,000 r/min. Check heater element with battery at full.
2. Turn "ON" rear window defogger switch. Measure heater element voltage with circuit tester at rear window glass center A. Condition is good if it indicates about 6 V.
3. If 12 V is indicated at A, there is a break in the negative terminals from A. Move test bar slowly to negative terminal to detect where voltage changes suddenly (0V).
4. If 0 V is indicated at A, there is a break in the positive terminals from A. Defect where the voltage changes suddenly (12 V) in the same method described above.
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.