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 MANUALSHONDA1991ACCORD DX, 2D COUPE, AUTOMATICREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHEATER SYSTEMTESTINGFUNCTION CONTROL BUTTONS
1991 Honda Accord DX, 2D Coupe, Automatic
Function Control Buttons
1991 Honda Accord DX, 2D Coupe, AutomaticSECTION Function Control Buttons
Check for continuity between terminals of function control buttons. See FUNCTION CONTROL BUTTONS CONTINUITY table. See Fig 1 . If continuity is not as indicated, replace switch.
FUNCTION CONTROL BUTTONS CONTINUITY
| Switch Position | Continuity Between Terminals |
|---|---|
| Vent (Face) | 1 & 6 |
| Bi-Level (Face-Foot) | 2 & 6 |
| Heat (Foot) | 3 & 6 |
| Heat/Defrost | 4 & 6 |
| Defrost | 5 & 6 |
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.