2007 KIA CARNIVAL Workshop Manual

A/C Pressure Transducer

2007 > 2.7L V6 GASOLINE >
COMPONENT LOCATION

2007 > 2.7L V6 GASOLINE >
DESCRIPTION
A/C pressure transducer convert the pressure value of high pressure line into voltage value after measure it. By
converted voltage value, engine ECM controls cooling fan by operating it high speed or low speed. Engine ECM stop
the operation of compressor when the temperature of refrigerant line is so high or so low irregularly to optimize air
conditioning system.

2007 > 2.7L V6 GASOLINE >
INSPECTION
1.Measure the pressure of high pressure line by measuring voltage output between NO.1 and NO.2 terminals.
2.Inspect the voltage value whether it is sufficient to be regular value or not.
Vout = Vdd(0.025 * P + 0.1) [kgf/cm²G]
Vout = Vdd(0.001758 * P + 0.074162) [PSIA]
3. If the measured voltage value is not specification, replace the A/C pressure transducer.
REPLACEMENT
1.Disconnect the negative ( - ) battery terminal.
2. Recover the refrigerant with a recovery/charging station.
3. Disconnect A/C pressure transducer connector (3P) (A).

Evaporator Temperature Sensor

2007 > 2.7L V6 GASOLINE >
COMPONENT LOCATION

2007 > 2.7L V6 GASOLINE >
DESCRIPTION
The evaporator temperature sensor will detect the evaporator core temperature and interrupt compressor relay power
in order to prevent evaporator freezing by excessive cooling.

2007 > 2.7L V6 GASOLINE >
INSPECTION
1.Ignition "OFF"
2. Disconnect evaporator temperature sensor.
3. Using the multi- tester, Measure resistance between terminal "1" and "2" of evaporator temperature sensor.
Specification
Evaporator core temperature [°C(°F)] Resistance [kΩ]
- 10(14) 13.6
0(32) 8
10(50) 4.9
15(59) 3.9
30(86) 2
40(104) 1.3
50(122) 0.9
4. If the measured resistance is not specification, substitute with a known- good evaporator temperature sensor and
check for proper operation.
5. If the problem is corrected, replace the evaporator temperature sensor.
REPLACEMENT
1.Disconnect the negative ( - ) battery terminal.
2. Remove the center lower side cover(B).