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Home >> Toyota >> 2002 >> 4Runner Base >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Rear Heater Unit >> Inspection

Rear Heater Unit: Inspection

  1. Inspect Fins For Blockage 

    If the fins are clogged, clean them with compressed air.

  2. Inspect Blower Motor Operation 

    Connect the positive (+) lead from the battery to terminal 1 and the negative (-) lead to terminal 2, then check that the motor operates smoothly.

    Fig 1: Inspecting Blower Motor Operation
    G01025245Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    If operation is not as specified, replace the motor.

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