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 MANUALSACURA20043.5RLREPAIR AND DIAGNOSIS (SINGLE PAGE)HEATING, VENTILATION & A/C (HVAC)HVAC CONTROL SYSTEMSAUTOMATIC A/C-HEATER SYSTEMSCOMPONENT TESTSPOWER TRANSISTOR

2004 Acura 3.5RL

Power Transistor

2004 Acura 3.5RLSECTION Power Transistor

CAUTION: Be careful not to damage locking tab when disconnecting and connecting wire terminal. Insulate Orange wire terminal from body until testing is completed.

Disconnect power transistor 3-pin harness connector. Remove Orange wire terminal from connector. Connect 1.2-3.4 watt bulb as shown. See Fig 1. Reconnect 3-pin harness connector to power transistor. Turn ignition on. If blower motor runs, power transistor is okay. If blower motor does not run, replace power transistor.

Fig 1: Testing Power Transistor

Courtesy of AMERICAN HONDA MOTOR CO., INC.

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.