Hyundai Tucson Quiz
Heating, Ventilation and Air Conditioning

AMBIENT TEMPERATURE SENSOR

In this manual: Heating, Ventilation and Air Conditioning
General Information — 17Engine Mechanical System — 51Engine Electrical System — 26Emission Control System — 23Engine/Fuel Control System — 44Clutch System — 12MANUAL TRANSMISSION SYSTEM — 12AUTOMATIC TRANSMISSION SYSTEM — 42Four-Wheel Drive (4WD) System — 14Drive Shaft and Axle — 22Suspension System — 30Steering System — 16Restraint — 21Braking System — 47Body Work (Interior and Exterior) — 145Body Electrical System — 162Heating, Ventilation and Air Conditioning — 39
7steps
~42min
2/5difficulty
Done 0 of 7

Description and Operation

Description

The ambient temperature sensor is located in front of the condenser and measures the outside air temperature. It is a negative temperature coefficient (NTC) thermistor; its resistance increases at low temperatures and decreases at high temperatures. The sensor output is used for discharge air temperature control, door temperature control, cooling fan speed control, blend mode control and in-vehicle humidity control.

Repair Procedures

Inspection

  1. Check the resistance of the ambient temperature sensor between terminals 1 and 2 to see if it changes in accordance with the change in ambient temperature.
    1. Ambient Temperature Sensor (+)
    		2. Sensor Ground

    Specification
    Ambient Temperature
    [°C (°F)]    		 Resistance between terminals 1 and 2 (kΩ)
    -10 (14) 164,2
    0 (32) 97,5
    10 (50) 59,6
    20 (68) 37,46

Diagnosis with GDS

  1. The heating, ventilation and air conditioning (HVAC) system can be diagnosed quickly (defective parts) using the Global Diagnostic System (GDS). ※ The GDS provides the following information. (1) Self-diagnosis: checks and displays diagnostic trouble codes (DTC). (2) Current data: checks the status of input/output signals. (3) Active test: checks system operating conditions. (4) Additional functions: in addition to control, such as zero point adjustment.
  2. Select the "Vehicle Model" and the system to be checked in order to inspect the vehicle with the scan tool.
  3. Select the "Current Data" menu to check the current status of the input/output data. The input/output data for the sensors corresponding to the ambient temperature sensor can be checked.

REPLACEMENT

  1. Disconnect the negative (-) battery terminal.
  2. Remove the front bumper. (Refer to Body - "Front Bumper Cover")
  3. Disconnect the connector (A) and remove the ambient temperature sensor (B).
  4. To install, perform the removal procedure in reverse order.

Test yourself

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