Parts
PartThermostatic Switch
ManufacturerCHY
OEM part #5143149AA
Price$13.45
PartThermostatic Switch
ManufacturerCHY
OEM part #5143149AA
Price$13.45
Procedures
Evaporator Temperature Sensor - Installation
ℹ NOTE
Illustration shown with instrument panel removed for clarity.ℹ NOTE
LHD model shown. RHD model similar.
- Install the evaporator temperature sensor (1) into rear of the HVAC housing (2) and connect the instrument panel wire harness connector.
- Install the instrument panel Instrument Panel - Installation.
- Reconnect the negative battery cable.
Evaporator Temperature Sensor - Removal
⚠ WARNING
Disable the airbag system before attempting any steering wheel, steering column or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable and wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.ℹ NOTE
Illustration shown with instrument panel removed for clarity.ℹ NOTE
LHD model shown. RHD model similar.- Disconnect and isolate the negative battery cable.
- Partially remove the instrument panel to gain access to the evaporator temperature sensor (1) located in the rear of the HVAC housing (2), near the bottom of the instrument panel on the passenger side Instrument Panel - Removal.
- Disconnect the instrument panel wire harness connector from the evaporator temperature sensor and remove the sensor from the HVAC housing.
Evaporator Temperature Sensor - Description
ℹ NOTE
Typical evaporator temperature sensor shown.
DESCRIPTION The evaporator temperature sensor (1) measures the temperature of the conditioned air downstream of the A/C evaporator (2). The evaporator temperature sensor is an electrical thermistor within a molded plastic case that is inserted into rear the HVAC housing (3) near the coldest point of the A/C evaporator. Two terminals within the connector receptacle (4) connect the sensor to the vehicle electrical system through a wire lead and connector of the instrument panel wire harness. The external location of the evaporator temperature sensor allows the sensor to be removed or installed without disturbing the refrigerant in the A/C system.
Evaporator Temperature Sensor - Installation
ℹ NOTE
Illustration shown with instrument panel removed for clarity.ℹ NOTE
LHD model shown. RHD model similar.- Install the evaporator temperature sensor (1) into rear of the HVAC housing (2) and connect the instrument panel wire harness connector.
- Install the instrument panel Instrument Panel - Installation.
- Reconnect the negative battery cable.
Evaporator Temperature Sensor - Removal
⚠ WARNING
Disable the airbag system before attempting any steering wheel, steering column or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable and wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to follow these instructions may result in accidental airbag deployment and possible serious or fatal injury.ℹ NOTE
Illustration shown with instrument panel removed for clarity.ℹ NOTE
LHD model shown. RHD model similar.- Disconnect and isolate the negative battery cable.
- Partially remove the instrument panel to gain access to the evaporator temperature sensor (1) located in the rear of the HVAC housing (2), near the bottom of the instrument panel on the passenger side Instrument Panel - Removal.
- Disconnect the instrument panel wire harness connector from the evaporator temperature sensor and remove the sensor from the HVAC housing.
Evaporator Temperature Sensor - Description
ℹ NOTE
Typical evaporator temperature sensor shown.DESCRIPTION The evaporator temperature sensor (1) measures the temperature of the conditioned air downstream of the A/C evaporator (2). The evaporator temperature sensor is an electrical thermistor within a molded plastic case that is inserted into rear the HVAC housing (3) near the coldest point of the A/C evaporator. Two terminals within the connector receptacle (4) connect the sensor to the vehicle electrical system through a wire lead and connector of the instrument panel wire harness. The external location of the evaporator temperature sensor allows the sensor to be removed or installed without disturbing the refrigerant in the A/C system.
Factory service manual
From the 2008 KK factory manual — descriptions, specs, torque & procedures for this part.
SENSOR-EVAPORATOR TEMPERATURE
NOTE: Typical evaporator temperature sensor shown in graphic.
The evaporator temperature sensor (1) measures the temperature of the conditioned air downstream of the A/C evaporator (2). The evaporator temperature sensor is an electrical thermistor within a molded plastic case that is inserted into rear the HVAC housing (3) near the coldest point of the A/C evaporator. Two terminals within the connector receptacle (4) connect the sensor to the vehicle electrical system through a wire lead and connector of the instrument panel wire harness.
The external location of the evaporator temperature sensor allows the sensor to be removed or installed without disturbing the refrigerant in the A/C system.
SENSOR-EVAPORATOR TEMPERATURE
The evaporator temperature sensor monitors the temperature of the conditioned air downstream of the A/C evaporator and supplies an input signal to the A/C-heater control. The A/C-heater control uses the evaporator temperature sensor input signal to optimize A/C system performance and to protect the A/C system from evaporator freezing. The evaporator temperature sensor will change its internal resistance in response to the temperatures it monitors and is connected to the A/C-heater control through sensor ground circuit and a 5-volt reference signal circuit. As the temperature of the A/C evaporator decreases, the internal resistance of the evaporator temperature sensor decreases.
The A/C-heater control uses the monitored voltage reading as an indication of evaporator temperature. The A/C-heater control is programmed to respond to this input by requesting the powertrain control module (PCM) or the engine control module (ECM) (depending on engine application) to cycle the A/C compressor clutch as necessary to optimize A/C system performance and to protect the A/C system from evaporator freezing.
The evaporator temperature sensor is diagnosed using a scan tool. See DIAGNOSIS AND TESTING.
The evaporator temperature sensor cannot be adjusted or repaired and must be replaced if found inoperative or damaged.
SENSOR-EVAPORATOR TEMPERATURE
WARNING: Disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury or death.
NOTE: Illustration shown with instrument panel removed for clarity.
NOTE: LHD model shown in illustration. RHD model similar.
1. Disconnect and isolate the negative battery cable. 2. Partially remove the instrument panel to gain access to the evaporator temperature sensor (1) located in the rear of the HVAC housing (2), near the bottom of the instrument panel on the passenger side. Refer to
Removal
3
Disconnect the instrument panel wire harness connector from the evaporator temperature sensor and
remove the sensor from the HVAC housing.
SENSOR-EVAPORATOR TEMPERATURE
NOTE: Illustration shown with instrument panel removed for clarity.
NOTE: LHD model shown in illustration. RHD model similar.
1. Install the evaporator temperature sensor (1) into rear of the HVAC housing (2) and connect the instrument panel wire harness connector. 2. Install the instrument panel. Refer to INSTALLATION . 3. Reconnect the negative battery cable.
SENSOR-INFRARED
SENSOR-EVAPORATOR TEMPERATURE
NOTE: Typical evaporator temperature sensor shown in graphic.
The evaporator temperature sensor (1) measures the temperature of the conditioned air downstream of the A/C evaporator (2). The evaporator temperature sensor is an electrical thermistor within a molded plastic case that is inserted into rear the HVAC housing (3) near the coldest point of the A/C evaporator. Two terminals within the connector receptacle (4) connect the sensor to the vehicle electrical system through a wire lead and connector of the instrument panel wire harness.
The external location of the evaporator temperature sensor allows the sensor to be removed or installed without disturbing the refrigerant in the A/C system.
SENSOR-EVAPORATOR TEMPERATURE
The evaporator temperature sensor monitors the temperature of the conditioned air downstream of the A/C evaporator and supplies an input signal to the A/C-heater control. The A/C-heater control uses the evaporator temperature sensor input signal to optimize A/C system performance and to protect the A/C system from evaporator freezing. The evaporator temperature sensor will change its internal resistance in response to the temperatures it monitors and is connected to the A/C-heater control through sensor ground circuit and a 5-volt reference signal circuit. As the temperature of the A/C evaporator decreases, the internal resistance of the evaporator temperature sensor decreases.
The A/C-heater control uses the monitored voltage reading as an indication of evaporator temperature. The A/C-heater control is programmed to respond to this input by requesting the powertrain control module (PCM) or the engine control module (ECM) (depending on engine application) to cycle the A/C compressor clutch as necessary to optimize A/C system performance and to protect the A/C system from evaporator freezing.
The evaporator temperature sensor is diagnosed using a scan tool. See DIAGNOSIS AND TESTING.
The evaporator temperature sensor cannot be adjusted or repaired and must be replaced if found inoperative or damaged.
SENSOR-EVAPORATOR TEMPERATURE
WARNING: Disable the airbag system before attempting any steering wheel, steering column, or instrument panel component diagnosis or service. Disconnect and isolate the negative battery (ground) cable, then wait two minutes for the airbag system capacitor to discharge before performing further diagnosis or service. This is the only sure way to disable the airbag system. Failure to take the proper precautions could result in accidental airbag deployment and possible personal injury or death.
NOTE: Illustration shown with instrument panel removed for clarity.
NOTE: LHD model shown in illustration. RHD model similar.
1. Disconnect and isolate the negative battery cable. 2. Partially remove the instrument panel to gain access to the evaporator temperature sensor (1) located in the rear of the HVAC housing (2), near the bottom of the instrument panel on the passenger side. Refer to
Removal
3
Disconnect the instrument panel wire harness connector from the evaporator temperature sensor and
remove the sensor from the HVAC housing.
SENSOR-EVAPORATOR TEMPERATURE
NOTE: Illustration shown with instrument panel removed for clarity.
NOTE: LHD model shown in illustration. RHD model similar.
1. Install the evaporator temperature sensor (1) into rear of the HVAC housing (2) and connect the instrument panel wire harness connector. 2. Install the instrument panel. Refer to INSTALLATION . 3. Reconnect the negative battery cable.
SENSOR-INFRARED
