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HOMESERVICE MANUALSACURA20043.5RLREPAIR AND DIAGNOSISHEATING, 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
G96J31137Courtesy of AMERICAN HONDA MOTOR CO., INC.
RENDER: 1.0x

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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.