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 MANUALSACURA2001INTEGRA GS, 2D COUPE, STANDARDREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSHEATER SYSTEMTROUBLE SHOOTINGMODE CONTROL MOTOR DOES NOT RUN OR ONE OR MORE MODES ARE INOPERATIVE
2001 Acura Integra GS, 2D Coupe, Standard
Mode Control Motor Does Not Run Or One Or More Modes Are Inoperative
2001 Acura Integra GS, 2D Coupe, StandardSECTION Mode Control Motor Does Not Run Or One Or More Modes Are Inoperative
- Remove driver's side lower instrument panel cover. Unplug mode control motor 8-pin connector. Turn ignition on. Measure voltage between mode control motor harness connector Black/Yellow wire terminal and chassis ground. If battery voltage does not exist, repair open Black/Yellow wire between motor and underdash fuse/relay block. If battery voltage exists, go to next step.
- Turn ignition off. Check for continuity between mode control motor harness connector Black wire terminal and chassis ground. If continuity exists, go to next step. If continuity does not exist, check for open Black wire between chassis ground and mode control motor. If Black wire is okay, check for poor ground connections.
- Test mode control motor. See MODE CONTROL MOTOR under TESTING. If mode control motor does not test okay, go to next step. If mode control motor is okay, go to step 5 .
- Remove mode control motor. See MODE CONTROL MOTOR under REMOVAL & INSTALLATION. Check mode control linkage and doors for free movement. If doors and linkage bind, repair linkage or doors as necessary. If doors and linkage move freely, replace mode control motor.
- Remove heater control panel. See HEATER CONTROL PANEL under REMOVAL & INSTALLATION. Disconnect heater control panel 14-pin connector. Check for continuity between chassis ground and Yellow/Blue wire, Yellow wire, Blue/White wire, Green/Yellow wire, and Yellow/Red wire at mode control motor harness connector terminals.
- If continuity exists, repair short to ground in wire(s) between mode control motor and heater control panel. If continuity does not exist, check the same wires for voltage. If voltage does not exist, go to step 8 .
- If voltage exists, repair short to power (battery voltage) in Black/Yellow wire between mode control motor and heater control panel. Voltage at this point damages heater control panel which must be replaced.
- Check for continuity of Yellow/Blue wire, Yellow wire, Blue/White wire, Green/Yellow wire, and Yellow/Red wire between mode control motor and heater control panel.
- If continuity does not exist, repair open wire(s) between mode control motor and heater control panel. If continuity exists, replace heater control panel.
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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.