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 MANUALSMAZDA20113 MAZDASPEED, 2.3 3REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 148 (LIGHTING SYSTEM)PANEL LIGHT CONTROL SWITCH INSPECTIONTERMINAL C INSPECTION
2011 Mazda 3 Mazdaspeed, 2.3 3
Terminal C Inspection
2011 Mazda 3 Mazdaspeed, 2.3 3SECTION Terminal C Inspection
WARNING: This page is about a different car, the 2004 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
- Measure the wave pattern of the terminal C on the panel light control switch using an oscilloscope.
- Set the headlight switch to either the TNS or headlight position.
- Set the panel light control switch to the brightest position.
- Verify that the pattern on the screen is as shown in the figure.
- Verify that the pattern on the screen matches the pattern shown in the figure as the panel light control switch is gradually turned to the darkest position.
RENDER: 1.0x
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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.