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.
Except S2000
Remove defogger relay. See COMPONENT LOCATIONS table. Using DVOM, check for continuity between relay terminals No. 1 and 3. See Fig 1 or Fig 2 . Continuity should not exist. Using fused jumper wires, apply battery voltage to defogger relay terminal No. 2 and ground to terminal No. 4. Check for continuity between relay terminals No. 1 and 3. Continuity should exist. If continuity is not as specified, replace defogger relay.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.