Hyundai Santa Fe (2006 year). Manual — part 666

HA -42

HEATING, VENTILATION AND AIR CONDITIONING

HUMIDITY SENSOR

COMPONENT LOCATION

ED4862C0

Humidity sensor

SCMHA6138L

A/C COMPRESSOR CONTROLS (FULL AUTO)

HA -43

DESCRIPTION

E4A63763

1.

Humidity sensor is located at the lower crush pad and
detected in-car humidity for in-car humidity control.

2.

If ambient air temperature or in-car humidity is outside
certain range, it will turn on A/C to control in-car hu-
midity preventing in car fogging.
Air conditioner operation depends on ambient tem-
perature and humidity.

1

2

3

4

5

6

1. Motor (-)
2. Sensor (-)
3. Humidity sensor signal

4. In-car sensor temp.signal
5. Sensor (+)
6. Motor (+)

SCMHA6400L

INSPECTION

ED2CFA50

1.

Ignition "ON"

2.

Using the scan tool.

3.

Check the frequency of humidity sensor between ter-
minals 2 and 3.

Humidity (%)

Frequency between

terminals 2and 3 (Hz)

30

6976 ± 5%

50

6728 ± 5%

60

6600 ± 5%

70

6468 ± 5%

80

6330 ± 5%

90

6186 ± 5%

4.

If the measured resistance is not specification, sub-
stitute with a known-good humidity sensor and check
for proper operation.

5.

If the problem is corrected, replace the Humidity sen-
sor.

HA -44

HEATING, VENTILATION AND AIR CONDITIONING

REPLACEMENT

EF181EBC

1.

Disconnect the negative (-) battery terminal.

2.

Remove the crash pad. (Refer to BD- Crash pad)

3.

Disconnect the humidity sensor connector.

4.

Loosen 2 screws and then remove the humidity sen-
sor (C).

C

SCMHA6140D

5.

Installation is the reverse order of removal.

HEATER

HA -45

HEATER

HEATER UNIT

COMPONENT LOCATION

EDABBA22

Heater unit

SCMHA6141L