General Description
The air mix actuator (Temperature Actuator) is located at heater unit. It contains a motor that changes temp door position and a potentiometer that monitors the position of the temp door. The Air Conditioning Control Unit controls the temperature by commanding the temp door motor to move.
DTC Description
The Air Conditioner Control Module sets DTC B1204 if the Feed Back signal of Passenger Air mix actuator (Temperature actuator) has been detected open or below 0.1V for 0.3 seconds.
The air mix actuator (Temperature Actuator) is located at heater unit. It contains a motor that changes temp door position and a potentiometer that monitors the position of the temp door. The Air Conditioning Control Unit controls the temperature by commanding the temp door motor to move.
The Air Conditioner Control Module sets DTC B1205 if the Feed Back signal of Passenger Air mix actuator (Temperature actuator) has been detected over 4.9V for 0.3 seconds.
The Intake door is located at the heater unit and controls the source of air entering the HVAC system (Fresh or Recirculation). The door is controlled via a motor that changes the intake door position. The actuator includes a potentiometer that monitors position of intake door. When driver operates the intake switch, the HVAC ECU receives a signal and then commands the door motor to turn intake door to the intended position.
The Air Conditioner Control Module sets DTC B1208 if the Feed Back signal of Intake Actuator has been detected open or below 0.1V for 0.3 seconds.
The Intake door is located at the heater unit and controls the source of air entering the HVAC system (Fresh or Recirculation). The door is controlled via a motor that changes the intake door position. The actuator includes a potentiometer that monitors position of intake door. When driver operates the intake switch, the HVAC ECU receives a signal and then commands the door motor to turn intake door to the intended position.
The Air Conditioner Control Module sets DTC B1209 if the Feed Back signal of Intake Actuator has been detected over 4.9V for 0.3 seconds.
The In-Car Sensor contains a thermistor which measures the temperature of the vehicle's interior. The signal is used by the HVAC control unit when controlling AC functions.
DTC B1233 sets if the In-Car Temperature Sensor signal is at or below 0.1V for 0.3 seconds.
The In-Car Sensor contains a thermistor which measures the temperature of the vehicle's interior. The signal is used by the HVAC control unit when controlling AC functions.
DTC B1234 sets if In-Car temperature sensor signal is at or over 4.9V for 0.3 seconds.
The ambient temperature sensor is located at the center stay of the condenser and detects ambient air temperature. It is a negative type thermistor whose resistance is inversely proportional to the temperature. Its output is used for sensor fail-safe, temperature regulation door lock, blower motor level control, mix mode control and in-car humidity control.
DTC B1237 sets if the Ambient Sensor signal is at or below 0.1V for 0.3 seconds.
The ambient temperature sensor is located at the center stay of the condenser and detects ambient air temperature. It is a negative type thermistor whose resistance is inversely proportional to the temperature. Its output is used for sensor fail-safe, temperature regulation door lock, blower motor level control, mix mode control and in-car humidity control.
DTC B1238 sets if Ambient Temperature sensor signal is at or over 4.9V for 0.3 seconds.
The Evaporator sensor located on the HVAC unit and detects the evaporator core temperature. It is a negative type thermistor whose resistance is inversely proportional to temperature. The Evaporator sensor converts the measured temperature into a voltage value and delivers it to A/C ECU. When core temperature is blow threshold value, A/C ECU interrupts compressor relay power, in order to prevent evaporator freezing by excessive cooling.
DTC B1242 sets if Evaporator sensor signal is at or over 4.9V for 0.3 seconds.
The air mix actuator (Temperature Actuator) is located at heater unit. It contains temp motor that changes temp door position and potentiometer that monitors position of temp door. The air mix actuator regulates the temperature by the procedure as follows. Signal from control unit adjusts position of temp door by operating temp motor and then temperature will be regulated by the hot/cold air ratio decided by position of temp door. In operation, potentiometer delivers temp door position transformed into voltage value to A/C ECU.
DTC B1245 sets if the Driver Air mix actuator (Temperature actuator) Sensor signal is at or below 0.1V for 0.3 seconds.
The Air Mix actuator contains a motor that changes temp door position and a potentiometer that monitors position of temp door. The Air mix actuator (Temperature actuator) regulates the temperature by operating temp door motor. The potentiometer delivers temp door position to the A/C ECU.
DTC B1246 sets if Driver Air mix actuator (Temperature actuator) sensor signal is at or over 4.9V for 0.3 seconds.
The mode control actuator mounted on heater unit adjusts position of mode door by operating Direction Motor based on signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order of vent--> B/L --> floor --> mix.
DTC B1249 sets if the Mode Actuator Sensor signal is at or below 0.1V for 0.3 seconds.
The Evaporator sensor located on the HVAC unit and detects the evaporator core temperature. It is a negative type thermistor whose resistance is inversely proportional to temperature. The Evaporator sensor converts the measured temperature into a voltage value and delivers it to A/C ECU. When core temperature is blow threshold value, A/C ECU interrupts compressor relay power, in order to prevent evaporator freezing by excessive cooling.
DTC B1241 sets if the Evaporator Sensor signal is at or below 0.1V for 0.3 seconds.
The mode control actuator mounted on heater unit adjusts position of mode door by operating Direction Motor based on signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order of vent--> B/L --> floor --> mix.
DTC B1250 sets if Mode Actuator sensor signal is at or over 4.9V for 0.3 seconds.
Auto defogger sensor is installed on front window glass. Auto defogger sensor judges and sends signal for the occurrence of moisture in advance of blowing out the wind for defogging. Air conditioner control module receives signal from auto defogger and performs restraining moisture and eliminating in advance with automatically controlling Intake actuator, A/C, Defogger actuator, Blower motor RPM, Mode actuator.
The Air conditioner Control Module sets DTC B1281 if The signal from auto defogger sensor has been detected short to ground in ground circuit for 2 seconds.
Auto defogger sensor is installed on front window glass. Auto defogger sensor judges and sends signal of the occurrence of moisture in advance of blowing out the wind for defogging. Air conditioner control module receives signal from auto defogger and performs restraining moisture and eliminating in advance with automatically controlling Intake actuator, A/C, Defogger actuator, Blower motor RPM, Mode actuator.
The Air conditioner Control Module sets DTC B1282 if The signal from auto defogger sensor has been detected open for 2 seconds.
The Auto Defogger sensor is installed on front window glass. The Auto Defogger sensor senses any moisture on the interior of the windshield. While controlling the temperature and Mode (direction of air) set by driver, if the humidity is higher than certain level, the Air conditioner control Module automatically controls auto defogging mode. Air conditioner control module exits auto defogging when the humidity is decreased.
The Air conditioner Control Module sets DTC B1283 if The signal from auto defogger sensor has been detected 0.1V for 0.3 seconds.
The Auto Defogger sensor is installed on front window glass. The Auto Defogger sensor senses any moisture on the interior of the windshield. While controlling the temperature and Mode (direction of air) set by driver, if the humidity is higher than certain level, the Air conditioner control Module automatically controls auto defogging mode. Air conditioner control module exits auto defogging when the humidity is decreased.
The Air conditioner Control Module sets DTC B1284 if The signal from auto defogger mode actuator has been detected 4.9V for 0.3 seconds.
The Auto Defogger sensor is installed on front window glass. The Auto Defogger sensor senses any moisture on the interior of the windshield. While controlling the temperature and Mode (direction of air) set by driver, if the humidity is higher than certain level, the Air conditioner control Module automatically controls auto defogging mode. Air conditioner control module exits auto defogging when the humidity is decreased.
The Air conditioner Control Module sets DTC B1285 if auto defogger mode actuator has not been moved to the mode, where air condition control module controls, within 40 seconds.
The Air Conditioner Control Module receives air conditioner refrigerants pressure from the ECM via CAN. The Air Conditioning Pressure Transducer (APT) supplies the A/C line pressure to the ECM. The APT value is used by the A/C control unit to control engagement of the compressor.
The Air conditioner Control Module sets DTC B1672 if APT signal has not been received through the CAN signal.
To help control the A/C Compressor, the A/C control unit receives the engine RPM from the ECM via CAN.
The Air conditioner Control Module sets DTC B1685 if Engine RPM signal has not been received through the CAN signal.
The Air conditioner Control Module detects ambient temperature only when vehicle is driving. The A/C Control Unit receives the vehicle speed signal from the ABS/ESP/ESC through the CAN signal.
The Air conditioner Control Module sets DTC B1686 if vehicle speed signal has not been received through the CAN signal.
The Air conditioner Control Module receives the engine coolant temperature sensor signal through the CAN signal.
Air conditioner Control Module sets DTC B1687 if engine temperature sensor signal has not been received through the CAN signal.
The air mix actuator (Temperature Actuator) is located at heater unit. It contains temp motor that changes temp door position and potentiometer that monitors position of temp door. The air mix actuator regulates the temperature by the procedure as follows. Signal from control unit adjusts position of temp door by operating temp motor and then temperature will be regulated by the hot/cold air ratio decided by position of temp door. In operation, potentiometer delivers temp door position transformed into voltage value to A/C ECU.
The Air conditioner Control Module sets DTC B2406 if Driver air mix actuator has not been moved to the mode, where air condition control module controls, within 40 seconds.
The actuator contains a motor that changes intake door position and a potentiometer that monitors position of the door. When the driver changes the air intake switch, the ECU operates intake door motor to turn the intake door to the intended position. (in the FRESH mode, the intake door is closed. In REC mode, the intake door is opened) During operation the potentiometer delivers an intake door position to the A/C ECU.
The Air conditioner Control Module sets DTC B2408 if Intake actuator has not been moved to the mode, where air condition control module controls, within 40 seconds.
The mode control actuator mounted on heater unit adjusts position of mode door by operating Direction Motor in accordance with signal of A/C control unit. Pressing mode select switch makes the mode control actuator shift in order of vent--> B/L --> floor --> mix.
The Air conditioner Control Module sets DTC B2409 if Driver Direction actuator has not been moved to the mode, where air condition control module controls, within 40 seconds.
The air mix actuator (Temperature Actuator) is located at heater unit. It contains temp motor that changes temp door position and potentiometer that monitors position of temp door. The air mix actuator regulates the temperature by the procedure as follows. Signal from control unit adjusts position of temp door by operating temp motor and then temperature will be regulated by the hot/cold air ratio decided by position of temp door. In operation, potentiometer delivers temp door position transformed into voltage value to A/C ECU.
The Air conditioner Control Module sets DTC B2415 if passenger air mix actuator has not been moved to the mode, where air condition control module controls, within 40 seconds.