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Home >> Subaru >> 2025 >> Outback Touring XT >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System (Heater, Ventilator And A/C) >> Ambient Sensor >> Inspection

Ambient Sensor: Inspection

  1. Visually check the ambient sensor for dirt or damage, and clean or replace as necessary.
  2. Measure the resistance between connector terminals.
    CAUTION: During inspection, be careful not to touch the sensor end in order to avoid misjudgment due to body temperature.
    G13951654Courtesy of SUBARU OF AMERICA, INC.
    Terminal No. Inspection conditions Standard
    2 - 1 10°C (50°F) 3.09 - 3.66 KΩ
    15°C (59°F) 2.47 - 2.86 KΩ
    20°C (68°F) 1.99 - 2.25 KΩ
    25°C (77°F) 1.62 - 1.79 KΩ
    30°C (86°F) 1.29 - 1.46 KΩ
    35°C (95°F) 1.04 - 1.20 KΩ
    40°C (104°F) 0.84 - 0.99 KΩ
    45°C (113°F) 0.68 - 0.82 KΩ
    50°C (122°F) 0.56 - 0.68 KΩ
    55°C (131°F) 0.46 - 0.57 KΩ
    60°C (140°F) 0.38 - 0.48 KΩ
  3. Replace the ambient sensor if the inspection result is not within the standard value.