Kia Carnival (2009+). Manual — part 545

Heating, Ventilation, Air Condi-

tioning

Air Conditioning System - Water

Temperature Sensor

Heating, Ventilation, Air Conditioning

2009 > G 2.7 DOHC >

COMPONENT LOCATION

2009 > G 2.7 DOHC >

DESCRIPTION

1. Water temperature sensor is located at the heater unit.

2. It detects coolant temperature. Its signal is used for cold engine lockout control. When the driver operates the

heater before the engine is warmed up, the signal from sensor causes the heater control unit to reduce blower
motor speed until coolant temperature reaches the threshold value.

2009 > G 2.7 DOHC >

INSPECTION

1. Ignition "ON"

2. Using the multi-tester, Measure resistance between terminal "1" and "2" of water temperature sensor.

Specification

Coolant temperature [°C(°F)]

Resistance (k!)

Voltage (V)

-10(14)

55.85 ± 3%

4.24 ± 3%

0(32)

32.91 ± 3%

3.83 ± 3%

10(50)

19.99 ± 3%

3.33 ± 3%

20(68)

12.51 ± 3%

2.78 ± 3%

30(86)

8.047 ± 3%

2.23 ± 3%

40(104)

5.311 ± 3%

1.73 ± 3%

50(122)

3.588 ± 3%

1.32 ± 3%

60(140)

2.476 ± 3%

0.99 ± 3%

70(158)

1.742 ±3%

0.74 ± 3%

80(176)

1.246 ± 3%

0.55 ± 3%

3. If the measured resistance is not specification, substitute with a known-good water temperature sensor and check

for proper operation.

4. If the problem is corrected, replace the water temperature sensor.

Negative type thermistor that resistance will rise with lower temperature, and reduce with higher temperature.

REPLACEMENT

1. Disconnect the negative (-) battery terminal.

2. Remove the grove box. (Refer to BD group)

3. Disconnect the connector (B) of water temperature sensor and then remove the water temperature sensor(A) by

pulling out.