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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSACURA19983.5RL SPECIAL EDITIONREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSA/C-HEATER SYSTEMTESTINGMODE CONTROL MOTOR TESTING
1998 Acura 3.5RL Special Edition
Mode Control Motor Testing
1998 Acura 3.5RL Special EditionSECTION Mode Control Motor Testing
- Disconnect mode control motor 5-pin connector. Connect battery voltage to mode control motor terminal No. 1 and ground terminal No. 5. See Figure
. If mode control motor does not run and stop at maximum vent position, reverse battery connections.NOTE: If mode control motor does not run, remove mode control motor. Check doors and linkage for smooth operation. If doors and linkage are okay, mode control motor must be replaced.
- Measure resistance between terminals No. 2 and No. 3. Resistance should be 4800-7200 ohms. Measure resistance between terminals No. 3 and No. 4. Resistance should be 960-1440 ohms at VENT position, and 3840-5760 ohms at defrost position. If resistance checks are not as specified, replace mode control motor.
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.