02 Sebring Temperature Control HVAC
#1
03-11-2007, 11:39 AM
02 Sebring Temperature Control HVAC
In my 02 Sebring, when the temparture control is all the way hot, the air temperature sometimes go all cold. If I turn the control or tap on it, it will become warm again. My first thought is the electronic control is bad, but wanted to see if anyone also had this problem and determined the cause.
Thanks
Thanks
#2
03-11-2007, 11:51 AM
RE: 02 Sebring Temperature Control HVAC
u either have a control head issue or a blend door stall feed back code in it .
DIAGNOSIS AND TESTING - SELF DIAGNOSTICS DIAGNOSTIC TROUBLE CODES (DTC's) Both the Automatic Temperature Control (ATC) and the Manual Temperature Control (MTC) systems are controlled by the Body Control Module (BCM). Both systems can be diagnosed by the DRBIII® scan tool or the vehicles own control head display. Refer to the DRBIII® menu for checking Diagnostic Trouble Codes (DTC's). Note that there are three DTC tables. The ATC and MTC DTC table contain faults that are common to both the ATC and the MTC system. The same diagnosis can be used for both systems. The DTC's cover operation of the climate control unit actuators, doors, evaporator temperature sensor, ambient temperature sensor and the A/C refrigerant system. The MTC DTC table covers Fault Codes that are for the MTC Control Head and wiring and are not used on an ATC system. The ATC DTC table has DTC's for ATC Head Communications, In-Car Temperature Sensor and Sun Sensor which are not in a MTC system. Some conditions of low battery voltage or extremely cold weather can generate a DTC for the climate control system actuators, evaporator probe, in-car temperature sensor (ATC), or ambient temperature sensor, even in a properly operating system. It is recommended that all the DTC's be checked as follows to assure a part is faulty. Climate Control Sensor DTC Check [ol][*]Clear the DTC.[*]Operate the HVAC system with the engine running for a minimum of 30 seconds.[*]Check for DTC's.[*]Perform diagnostics if the DTC appears again. (Refer to Appropriate Diagnostic Information)[/ol] Climate Control Actuator Check. [ol][*]Clear the DTC.[*]Perform HVAC system calibration. (Refer to 24 - HEATING & AIR CONDITIONING - STANDARD PROCEDURE - HVAC SYSTEM CALIBRATION)[*]Perform diagnostics if the DTC appears again. (Refer to Appropriate Diagnostic Information)[/ol] If a DTC does not appear when using the procedures above, check the history of the vehicle for a low battery condition, or ambient temperatures below 40°F. Removing connections without disconnecting the battery may also generate a DTC on a good part. The battery should always be disconnected when servicing electrical parts. ATC AND MTC DTC's CODE DESCRIPTION 23 BLEND DOOR ACTUATOR FEEDBACK FAILURE 24 MODE DOOR ACTUATOR FEEDBACK FAILURE 25 AMBIENT SENSOR 31 RECIRCULATION DOOR ACTUATOR STALL FAILURE 32 BLEND DOOR ACTUATOR STALL FAILURE 33 MODE DOOR ACTUATOR STALL FAILURE 35 EVAPORATOR SENSOR FAILURE 37 BLEND DOOR ACTUATOR OUTPUT SHORTED TO BATTERY 38 BLEND DOOR ACTUATOR OUTPUT SHORTED TO GROUND 39 MODE DOOR ACTUATOR OUTPUT SHORTED TO BATTERY 40 MODE DOOR ACTUATOR OUTPUT SHORTED TO GROUND 41 RECIRCULATION DOOR ACTUATOR OUPUT SHORTED TO BATTERY 42 RECIRCULATION DOOR ACTUATOR OUTPUT SHORTED TO GROUND 43 COMMON DOOR OUTPUT SHORTED TO BATTERY 44 COMMON DOOR OUTPUT SHORTED TO GROUND 51 SYSTEM VOLTAGE TOO LOW FOR DOOR CALIBRATION
MTC DTC's CODE DESCRIPTION 45 A/C CONTROL BLEND DOOR INPUT OPEN OR SHORTED TO GROUND 46 A/C CONTROL BLEND DOOR SHORTED TO BATTERY 47 A/C CONTROL - A/C SWITCH FAILURE 48 A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND 49 A/C CONTROL MODE DOOR INPUT SHORTED TO BATTERY 50 A/C CONTROL ELECTRIC BACKLITE (EBL) SWITCH FAILURE
ATC DTC's CODE DESCRIPTION 26 ATC IN-CAR TEMPERATURE THERMISTER FAILURE 27 ATC IN-CAR SENSOR FAILURE 34 ENGINE TEMPERATURE MESSAGE NOT RECEIVED 36 ATC CONTROL COMMUNICATION FAILURE
TROUBLE CODES FROM THE ATC HEAD The trouble codes can be checked with the ATC control if a DRBIII® scan tool is not available. The control head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. Set the control to a 75º F setting (so there is no confusion with the 23-51 Diagnostic Trouble Codes (DTC's)(ENTERING SELF-DIAGNOSTIC MODE). To place the system into it's diagnostic mode, press and hold the Floor, Mix and Defrost buttons (at the same time). The ATC head display will begin to blink. Release the Floor, Mix and Defrost buttons. Once the control head enters the diagnostic mode, the display on the control head will continue to blink. This occurs until it completes its tests and climate control unit door/actuator calibrations. Then it will display any diagnostic trouble codes that are present in the BCM. If there are no diagnostic trouble codes, the system will return to its normal operation as indicated by the temperature symbol (C or F). Diagnostic trouble codes related to the ATC and climate control unit will appear on the display in numerical form. The diagnostic trouble codes are stored in the BCM and can range between 23 and 51. The ATC control can only show one diagnostic trouble code at a time. Under certain circumstances, more than one diagnostic trouble code could be in the memory. To scroll through any additional diagnostic trouble codes, press the Panel Mode button on the ATC control. It is important that no other **** or button is pushed until all codes are read. Pushing any button except Panel Mode or turning a **** will end the diagnostic test without showing the rest of the trouble codes. There also may be other trouble codes stored in the BCM not related to the Climate Control System. These codes can only be found using the DRBIII® scan tool. TROUBLE CODES FROM THE MTC HEAD The trouble codes can be checked with the MTC head and the Odometer Display of the Mechanical Instrument Cluster if a DRBIII® scan tool is not available. The MTC Head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. To place the system into it's diagnostic mode, adjust the MTC to the following settings
MTC CONTROL HEAD) [ol][*]The engine must be running with vehicle not moving.[*]The Fan Speed set to any speed except OFF.[*]The Temperature **** in full cold (full counterclockwise position).[*]The mode **** must be placed in defrost position (full clockwise position).[*]The A/C button can be ON or OFF.[*]Press and hold the EBL button until the Mechanical Instrument Cluster Odometer display indicates an “AC00”. The body control module (BCM) will chime once and the MTC A/C button LED will begin blinking.[*]Release the EBL button and wait until the MTC A/C button LED stops blinking. This means that the error check and climate control unit door calibration is complete. Diagnostic trouble codes related to the MTC head and the climate control unit will appear on the odometer display in numerical form after the letters “AC”. The diagnostic trouble codes are stored in the BCM and can range between 23 and 51. The odometer display will return to normal operation if no trouble codes are found. If a problem is found, then the odometer will display the letters “A/C” followed by the trouble code number. The odometer display can only show one diagnostic trouble code at a time. Under certain circumstances, more than one diagnostic trouble code could be in the memory. To scroll through any additional diagnostic trouble codes, press the A/C button on the MTC head. The BCM will beep each time the A/C button is pushed. Continue pushing the A/C button and recording the trouble code numbers until the odometer returns to normal operation (note the letters AC will disappear). It is important that no other **** or button is pushed until all codes are read. Pushing any button except the A/C button or turning a **** will end the diagnostic test without showing the rest of the trouble codes. There also may be other trouble codes stored in the BCM not related to the Climate Control System. These codes can only be found using the DRBIII® scan tool.[/ol] ERASING DIAGNOSTIC TROUBLE CODES (DTC's) Diagnostic trouble codes can be cleared from the memory two ways: [ul][*]The DRBIII® scan tool[*]Power to the BCM can be disconnected for ten minutes by disconnecting the battery negative remote cable. [/ul] If the scan tool is to be used, refer to the Appropriate Diagnostic Information. CAUTION: Fault code 26 can be created if the in-car sensor thermistor is disconnected while the BCM is operating. This can happen by disconnecting connectors from the BCM or the ATC Control Head when the battery is connected (even if the ignition switch is OFF). To correct, clear the fault code 26 from the BCM.
DIAGNOSIS AND TESTING - SELF DIAGNOSTICS DIAGNOSTIC TROUBLE CODES (DTC's) Both the Automatic Temperature Control (ATC) and the Manual Temperature Control (MTC) systems are controlled by the Body Control Module (BCM). Both systems can be diagnosed by the DRBIII® scan tool or the vehicles own control head display. Refer to the DRBIII® menu for checking Diagnostic Trouble Codes (DTC's). Note that there are three DTC tables. The ATC and MTC DTC table contain faults that are common to both the ATC and the MTC system. The same diagnosis can be used for both systems. The DTC's cover operation of the climate control unit actuators, doors, evaporator temperature sensor, ambient temperature sensor and the A/C refrigerant system. The MTC DTC table covers Fault Codes that are for the MTC Control Head and wiring and are not used on an ATC system. The ATC DTC table has DTC's for ATC Head Communications, In-Car Temperature Sensor and Sun Sensor which are not in a MTC system. Some conditions of low battery voltage or extremely cold weather can generate a DTC for the climate control system actuators, evaporator probe, in-car temperature sensor (ATC), or ambient temperature sensor, even in a properly operating system. It is recommended that all the DTC's be checked as follows to assure a part is faulty. Climate Control Sensor DTC Check [ol][*]Clear the DTC.[*]Operate the HVAC system with the engine running for a minimum of 30 seconds.[*]Check for DTC's.[*]Perform diagnostics if the DTC appears again. (Refer to Appropriate Diagnostic Information)[/ol] Climate Control Actuator Check. [ol][*]Clear the DTC.[*]Perform HVAC system calibration. (Refer to 24 - HEATING & AIR CONDITIONING - STANDARD PROCEDURE - HVAC SYSTEM CALIBRATION)[*]Perform diagnostics if the DTC appears again. (Refer to Appropriate Diagnostic Information)[/ol] If a DTC does not appear when using the procedures above, check the history of the vehicle for a low battery condition, or ambient temperatures below 40°F. Removing connections without disconnecting the battery may also generate a DTC on a good part. The battery should always be disconnected when servicing electrical parts. ATC AND MTC DTC's CODE DESCRIPTION 23 BLEND DOOR ACTUATOR FEEDBACK FAILURE 24 MODE DOOR ACTUATOR FEEDBACK FAILURE 25 AMBIENT SENSOR 31 RECIRCULATION DOOR ACTUATOR STALL FAILURE 32 BLEND DOOR ACTUATOR STALL FAILURE 33 MODE DOOR ACTUATOR STALL FAILURE 35 EVAPORATOR SENSOR FAILURE 37 BLEND DOOR ACTUATOR OUTPUT SHORTED TO BATTERY 38 BLEND DOOR ACTUATOR OUTPUT SHORTED TO GROUND 39 MODE DOOR ACTUATOR OUTPUT SHORTED TO BATTERY 40 MODE DOOR ACTUATOR OUTPUT SHORTED TO GROUND 41 RECIRCULATION DOOR ACTUATOR OUPUT SHORTED TO BATTERY 42 RECIRCULATION DOOR ACTUATOR OUTPUT SHORTED TO GROUND 43 COMMON DOOR OUTPUT SHORTED TO BATTERY 44 COMMON DOOR OUTPUT SHORTED TO GROUND 51 SYSTEM VOLTAGE TOO LOW FOR DOOR CALIBRATION
MTC DTC's CODE DESCRIPTION 45 A/C CONTROL BLEND DOOR INPUT OPEN OR SHORTED TO GROUND 46 A/C CONTROL BLEND DOOR SHORTED TO BATTERY 47 A/C CONTROL - A/C SWITCH FAILURE 48 A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND 49 A/C CONTROL MODE DOOR INPUT SHORTED TO BATTERY 50 A/C CONTROL ELECTRIC BACKLITE (EBL) SWITCH FAILURE
ATC DTC's CODE DESCRIPTION 26 ATC IN-CAR TEMPERATURE THERMISTER FAILURE 27 ATC IN-CAR SENSOR FAILURE 34 ENGINE TEMPERATURE MESSAGE NOT RECEIVED 36 ATC CONTROL COMMUNICATION FAILURE
TROUBLE CODES FROM THE ATC HEAD The trouble codes can be checked with the ATC control if a DRBIII® scan tool is not available. The control head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. Set the control to a 75º F setting (so there is no confusion with the 23-51 Diagnostic Trouble Codes (DTC's)(ENTERING SELF-DIAGNOSTIC MODE). To place the system into it's diagnostic mode, press and hold the Floor, Mix and Defrost buttons (at the same time). The ATC head display will begin to blink. Release the Floor, Mix and Defrost buttons. Once the control head enters the diagnostic mode, the display on the control head will continue to blink. This occurs until it completes its tests and climate control unit door/actuator calibrations. Then it will display any diagnostic trouble codes that are present in the BCM. If there are no diagnostic trouble codes, the system will return to its normal operation as indicated by the temperature symbol (C or F). Diagnostic trouble codes related to the ATC and climate control unit will appear on the display in numerical form. The diagnostic trouble codes are stored in the BCM and can range between 23 and 51. The ATC control can only show one diagnostic trouble code at a time. Under certain circumstances, more than one diagnostic trouble code could be in the memory. To scroll through any additional diagnostic trouble codes, press the Panel Mode button on the ATC control. It is important that no other **** or button is pushed until all codes are read. Pushing any button except Panel Mode or turning a **** will end the diagnostic test without showing the rest of the trouble codes. There also may be other trouble codes stored in the BCM not related to the Climate Control System. These codes can only be found using the DRBIII® scan tool. TROUBLE CODES FROM THE MTC HEAD The trouble codes can be checked with the MTC head and the Odometer Display of the Mechanical Instrument Cluster if a DRBIII® scan tool is not available. The MTC Head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. To place the system into it's diagnostic mode, adjust the MTC to the following settings
MTC CONTROL HEAD) [ol][*]The engine must be running with vehicle not moving.[*]The Fan Speed set to any speed except OFF.[*]The Temperature **** in full cold (full counterclockwise position).[*]The mode **** must be placed in defrost position (full clockwise position).[*]The A/C button can be ON or OFF.[*]Press and hold the EBL button until the Mechanical Instrument Cluster Odometer display indicates an “AC00”. The body control module (BCM) will chime once and the MTC A/C button LED will begin blinking.[*]Release the EBL button and wait until the MTC A/C button LED stops blinking. This means that the error check and climate control unit door calibration is complete. Diagnostic trouble codes related to the MTC head and the climate control unit will appear on the odometer display in numerical form after the letters “AC”. The diagnostic trouble codes are stored in the BCM and can range between 23 and 51. The odometer display will return to normal operation if no trouble codes are found. If a problem is found, then the odometer will display the letters “A/C” followed by the trouble code number. The odometer display can only show one diagnostic trouble code at a time. Under certain circumstances, more than one diagnostic trouble code could be in the memory. To scroll through any additional diagnostic trouble codes, press the A/C button on the MTC head. The BCM will beep each time the A/C button is pushed. Continue pushing the A/C button and recording the trouble code numbers until the odometer returns to normal operation (note the letters AC will disappear). It is important that no other **** or button is pushed until all codes are read. Pushing any button except the A/C button or turning a **** will end the diagnostic test without showing the rest of the trouble codes. There also may be other trouble codes stored in the BCM not related to the Climate Control System. These codes can only be found using the DRBIII® scan tool.[/ol] ERASING DIAGNOSTIC TROUBLE CODES (DTC's) Diagnostic trouble codes can be cleared from the memory two ways: [ul][*]The DRBIII® scan tool[*]Power to the BCM can be disconnected for ten minutes by disconnecting the battery negative remote cable. [/ul] If the scan tool is to be used, refer to the Appropriate Diagnostic Information. CAUTION: Fault code 26 can be created if the in-car sensor thermistor is disconnected while the BCM is operating. This can happen by disconnecting connectors from the BCM or the ATC Control Head when the battery is connected (even if the ignition switch is OFF). To correct, clear the fault code 26 from the BCM.
#3
09-04-2013, 04:08 PM
Chrysler Tech, Is the below procedure the same for troubleshooting a 2007 Chrysler Sebring?
u either have a control head issue or a blend door stall feed back code in it .
DIAGNOSIS AND TESTING - SELF DIAGNOSTICS DIAGNOSTIC TROUBLE CODES (DTC's) Both the Automatic Temperature Control (ATC) and the Manual Temperature Control (MTC) systems are controlled by the Body Control Module (BCM). Both systems can be diagnosed by the DRBIII® scan tool or the vehicles own control head display. Refer to the DRBIII® menu for checking Diagnostic Trouble Codes (DTC's). Note that there are three DTC tables. The ATC and MTC DTC table contain faults that are common to both the ATC and the MTC system. The same diagnosis can be used for both systems. The DTC's cover operation of the climate control unit actuators, doors, evaporator temperature sensor, ambient temperature sensor and the A/C refrigerant system. The MTC DTC table covers Fault Codes that are for the MTC Control Head and wiring and are not used on an ATC system. The ATC DTC table has DTC's for ATC Head Communications, In-Car Temperature Sensor and Sun Sensor which are not in a MTC system. Some conditions of low battery voltage or extremely cold weather can generate a DTC for the climate control system actuators, evaporator probe, in-car temperature sensor (ATC), or ambient temperature sensor, even in a properly operating system. It is recommended that all the DTC's be checked as follows to assure a part is faulty. Climate Control Sensor DTC Check [ol][*]Clear the DTC.[*]Operate the HVAC system with the engine running for a minimum of 30 seconds.[*]Check for DTC's.[*]Perform diagnostics if the DTC appears again. (Refer to Appropriate Diagnostic Information)[/ol] Climate Control Actuator Check. [ol][*]Clear the DTC.[*]Perform HVAC system calibration. (Refer to 24 - HEATING & AIR CONDITIONING - STANDARD PROCEDURE - HVAC SYSTEM CALIBRATION)[*]Perform diagnostics if the DTC appears again. (Refer to Appropriate Diagnostic Information)[/ol] If a DTC does not appear when using the procedures above, check the history of the vehicle for a low battery condition, or ambient temperatures below 40°F. Removing connections without disconnecting the battery may also generate a DTC on a good part. The battery should always be disconnected when servicing electrical parts. ATC AND MTC DTC's CODE DESCRIPTION 23 BLEND DOOR ACTUATOR FEEDBACK FAILURE 24 MODE DOOR ACTUATOR FEEDBACK FAILURE 25 AMBIENT SENSOR 31 RECIRCULATION DOOR ACTUATOR STALL FAILURE 32 BLEND DOOR ACTUATOR STALL FAILURE 33 MODE DOOR ACTUATOR STALL FAILURE 35 EVAPORATOR SENSOR FAILURE 37 BLEND DOOR ACTUATOR OUTPUT SHORTED TO BATTERY 38 BLEND DOOR ACTUATOR OUTPUT SHORTED TO GROUND 39 MODE DOOR ACTUATOR OUTPUT SHORTED TO BATTERY 40 MODE DOOR ACTUATOR OUTPUT SHORTED TO GROUND 41 RECIRCULATION DOOR ACTUATOR OUPUT SHORTED TO BATTERY 42 RECIRCULATION DOOR ACTUATOR OUTPUT SHORTED TO GROUND 43 COMMON DOOR OUTPUT SHORTED TO BATTERY 44 COMMON DOOR OUTPUT SHORTED TO GROUND 51 SYSTEM VOLTAGE TOO LOW FOR DOOR CALIBRATION
MTC DTC's CODE DESCRIPTION 45 A/C CONTROL BLEND DOOR INPUT OPEN OR SHORTED TO GROUND 46 A/C CONTROL BLEND DOOR SHORTED TO BATTERY 47 A/C CONTROL - A/C SWITCH FAILURE 48 A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND 49 A/C CONTROL MODE DOOR INPUT SHORTED TO BATTERY 50 A/C CONTROL ELECTRIC BACKLITE (EBL) SWITCH FAILURE
ATC DTC's CODE DESCRIPTION 26 ATC IN-CAR TEMPERATURE THERMISTER FAILURE 27 ATC IN-CAR SENSOR FAILURE 34 ENGINE TEMPERATURE MESSAGE NOT RECEIVED 36 ATC CONTROL COMMUNICATION FAILURE
TROUBLE CODES FROM THE ATC HEAD The trouble codes can be checked with the ATC control if a DRBIII® scan tool is not available. The control head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. Set the control to a 75º F setting (so there is no confusion with the 23-51 Diagnostic Trouble Codes (DTC's)(ENTERING SELF-DIAGNOSTIC MODE). To place the system into it's diagnostic mode, press and hold the Floor, Mix and Defrost buttons (at the same time). The ATC head display will begin to blink. Release the Floor, Mix and Defrost buttons. Once the control head enters the diagnostic mode, the display on the control head will continue to blink. This occurs until it completes its tests and climate control unit door/actuator calibrations. Then it will display any diagnostic trouble codes that are present in the BCM. If there are no diagnostic trouble codes, the system will return to its normal operation as indicated by the temperature symbol (C or F). Diagnostic trouble codes related to the ATC and climate control unit will appear on the display in numerical form. The diagnostic trouble codes are stored in the BCM and can range between 23 and 51. The ATC control can only show one diagnostic trouble code at a time. Under certain circumstances, more than one diagnostic trouble code could be in the memory. To scroll through any additional diagnostic trouble codes, press the Panel Mode button on the ATC control. It is important that no other **** or button is pushed until all codes are read. Pushing any button except Panel Mode or turning a **** will end the diagnostic test without showing the rest of the trouble codes. There also may be other trouble codes stored in the BCM not related to the Climate Control System. These codes can only be found using the DRBIII® scan tool. TROUBLE CODES FROM THE MTC HEAD The trouble codes can be checked with the MTC head and the Odometer Display of the Mechanical Instrument Cluster if a DRBIII® scan tool is not available. The MTC Head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. To place the system into it's diagnostic mode, adjust the MTC to the following settingsMTC CONTROL HEAD) [ol][*]The engine must be running with vehicle not moving.[*]The Fan Speed set to any speed except OFF.[*]The Temperature **** in full cold (full counterclockwise position).[*]The mode **** must be placed in defrost position (full clockwise position).[*]The A/C button can be ON or OFF.[*]Press and hold the EBL button until the Mechanical Instrument Cluster Odometer display indicates an “AC00”. The body control module (BCM) will chime once and the MTC A/C button LED will begin blinking.[*]Release the EBL button and wait until the MTC A/C button LED stops blinking. This means that the error check and climate control unit door calibration is complete. Diagnostic trouble codes related to the MTC head and the climate control unit will appear on the odometer display in numerical form after the letters “AC”. The diagnostic trouble codes are stored in the BCM and can range between 23 and 51. The odometer display will return to normal operation if no trouble codes are found. If a problem is found, then the odometer will display the letters “A/C” followed by the trouble code number. The odometer display can only show one diagnostic trouble code at a time. Under certain circumstances, more than one diagnostic trouble code could be in the memory. To scroll through any additional diagnostic trouble codes, press the A/C button on the MTC head. The BCM will beep each time the A/C button is pushed. Continue pushing the A/C button and recording the trouble code numbers until the odometer returns to normal operation (note the letters AC will disappear). It is important that no other **** or button is pushed until all codes are read. Pushing any button except the A/C button or turning a **** will end the diagnostic test without showing the rest of the trouble codes. There also may be other trouble codes stored in the BCM not related to the Climate Control System. These codes can only be found using the DRBIII® scan tool.[/ol] ERASING DIAGNOSTIC TROUBLE CODES (DTC's) Diagnostic trouble codes can be cleared from the memory two ways: [ul][*]The DRBIII® scan tool[*]Power to the BCM can be disconnected for ten minutes by disconnecting the battery negative remote cable. [/ul] If the scan tool is to be used, refer to the Appropriate Diagnostic Information. CAUTION: Fault code 26 can be created if the in-car sensor thermistor is disconnected while the BCM is operating. This can happen by disconnecting connectors from the BCM or the ATC Control Head when the battery is connected (even if the ignition switch is OFF). To correct, clear the fault code 26 from the BCM.
DIAGNOSIS AND TESTING - SELF DIAGNOSTICS DIAGNOSTIC TROUBLE CODES (DTC's) Both the Automatic Temperature Control (ATC) and the Manual Temperature Control (MTC) systems are controlled by the Body Control Module (BCM). Both systems can be diagnosed by the DRBIII® scan tool or the vehicles own control head display. Refer to the DRBIII® menu for checking Diagnostic Trouble Codes (DTC's). Note that there are three DTC tables. The ATC and MTC DTC table contain faults that are common to both the ATC and the MTC system. The same diagnosis can be used for both systems. The DTC's cover operation of the climate control unit actuators, doors, evaporator temperature sensor, ambient temperature sensor and the A/C refrigerant system. The MTC DTC table covers Fault Codes that are for the MTC Control Head and wiring and are not used on an ATC system. The ATC DTC table has DTC's for ATC Head Communications, In-Car Temperature Sensor and Sun Sensor which are not in a MTC system. Some conditions of low battery voltage or extremely cold weather can generate a DTC for the climate control system actuators, evaporator probe, in-car temperature sensor (ATC), or ambient temperature sensor, even in a properly operating system. It is recommended that all the DTC's be checked as follows to assure a part is faulty. Climate Control Sensor DTC Check [ol][*]Clear the DTC.[*]Operate the HVAC system with the engine running for a minimum of 30 seconds.[*]Check for DTC's.[*]Perform diagnostics if the DTC appears again. (Refer to Appropriate Diagnostic Information)[/ol] Climate Control Actuator Check. [ol][*]Clear the DTC.[*]Perform HVAC system calibration. (Refer to 24 - HEATING & AIR CONDITIONING - STANDARD PROCEDURE - HVAC SYSTEM CALIBRATION)[*]Perform diagnostics if the DTC appears again. (Refer to Appropriate Diagnostic Information)[/ol] If a DTC does not appear when using the procedures above, check the history of the vehicle for a low battery condition, or ambient temperatures below 40°F. Removing connections without disconnecting the battery may also generate a DTC on a good part. The battery should always be disconnected when servicing electrical parts. ATC AND MTC DTC's CODE DESCRIPTION 23 BLEND DOOR ACTUATOR FEEDBACK FAILURE 24 MODE DOOR ACTUATOR FEEDBACK FAILURE 25 AMBIENT SENSOR 31 RECIRCULATION DOOR ACTUATOR STALL FAILURE 32 BLEND DOOR ACTUATOR STALL FAILURE 33 MODE DOOR ACTUATOR STALL FAILURE 35 EVAPORATOR SENSOR FAILURE 37 BLEND DOOR ACTUATOR OUTPUT SHORTED TO BATTERY 38 BLEND DOOR ACTUATOR OUTPUT SHORTED TO GROUND 39 MODE DOOR ACTUATOR OUTPUT SHORTED TO BATTERY 40 MODE DOOR ACTUATOR OUTPUT SHORTED TO GROUND 41 RECIRCULATION DOOR ACTUATOR OUPUT SHORTED TO BATTERY 42 RECIRCULATION DOOR ACTUATOR OUTPUT SHORTED TO GROUND 43 COMMON DOOR OUTPUT SHORTED TO BATTERY 44 COMMON DOOR OUTPUT SHORTED TO GROUND 51 SYSTEM VOLTAGE TOO LOW FOR DOOR CALIBRATION
MTC DTC's CODE DESCRIPTION 45 A/C CONTROL BLEND DOOR INPUT OPEN OR SHORTED TO GROUND 46 A/C CONTROL BLEND DOOR SHORTED TO BATTERY 47 A/C CONTROL - A/C SWITCH FAILURE 48 A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND 49 A/C CONTROL MODE DOOR INPUT SHORTED TO BATTERY 50 A/C CONTROL ELECTRIC BACKLITE (EBL) SWITCH FAILURE
ATC DTC's CODE DESCRIPTION 26 ATC IN-CAR TEMPERATURE THERMISTER FAILURE 27 ATC IN-CAR SENSOR FAILURE 34 ENGINE TEMPERATURE MESSAGE NOT RECEIVED 36 ATC CONTROL COMMUNICATION FAILURE
TROUBLE CODES FROM THE ATC HEAD The trouble codes can be checked with the ATC control if a DRBIII® scan tool is not available. The control head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. Set the control to a 75º F setting (so there is no confusion with the 23-51 Diagnostic Trouble Codes (DTC's)(ENTERING SELF-DIAGNOSTIC MODE). To place the system into it's diagnostic mode, press and hold the Floor, Mix and Defrost buttons (at the same time). The ATC head display will begin to blink. Release the Floor, Mix and Defrost buttons. Once the control head enters the diagnostic mode, the display on the control head will continue to blink. This occurs until it completes its tests and climate control unit door/actuator calibrations. Then it will display any diagnostic trouble codes that are present in the BCM. If there are no diagnostic trouble codes, the system will return to its normal operation as indicated by the temperature symbol (C or F). Diagnostic trouble codes related to the ATC and climate control unit will appear on the display in numerical form. The diagnostic trouble codes are stored in the BCM and can range between 23 and 51. The ATC control can only show one diagnostic trouble code at a time. Under certain circumstances, more than one diagnostic trouble code could be in the memory. To scroll through any additional diagnostic trouble codes, press the Panel Mode button on the ATC control. It is important that no other **** or button is pushed until all codes are read. Pushing any button except Panel Mode or turning a **** will end the diagnostic test without showing the rest of the trouble codes. There also may be other trouble codes stored in the BCM not related to the Climate Control System. These codes can only be found using the DRBIII® scan tool. TROUBLE CODES FROM THE MTC HEAD The trouble codes can be checked with the MTC head and the Odometer Display of the Mechanical Instrument Cluster if a DRBIII® scan tool is not available. The MTC Head can only be placed into the diagnostic mode while the engine is running and the vehicle is not moving. To place the system into it's diagnostic mode, adjust the MTC to the following settings
MTC CONTROL HEAD) [ol][*]The engine must be running with vehicle not moving.[*]The Fan Speed set to any speed except OFF.[*]The Temperature **** in full cold (full counterclockwise position).[*]The mode **** must be placed in defrost position (full clockwise position).[*]The A/C button can be ON or OFF.[*]Press and hold the EBL button until the Mechanical Instrument Cluster Odometer display indicates an “AC00”. The body control module (BCM) will chime once and the MTC A/C button LED will begin blinking.[*]Release the EBL button and wait until the MTC A/C button LED stops blinking. This means that the error check and climate control unit door calibration is complete. Diagnostic trouble codes related to the MTC head and the climate control unit will appear on the odometer display in numerical form after the letters “AC”. The diagnostic trouble codes are stored in the BCM and can range between 23 and 51. The odometer display will return to normal operation if no trouble codes are found. If a problem is found, then the odometer will display the letters “A/C” followed by the trouble code number. The odometer display can only show one diagnostic trouble code at a time. Under certain circumstances, more than one diagnostic trouble code could be in the memory. To scroll through any additional diagnostic trouble codes, press the A/C button on the MTC head. The BCM will beep each time the A/C button is pushed. Continue pushing the A/C button and recording the trouble code numbers until the odometer returns to normal operation (note the letters AC will disappear). It is important that no other **** or button is pushed until all codes are read. Pushing any button except the A/C button or turning a **** will end the diagnostic test without showing the rest of the trouble codes. There also may be other trouble codes stored in the BCM not related to the Climate Control System. These codes can only be found using the DRBIII® scan tool.[/ol] ERASING DIAGNOSTIC TROUBLE CODES (DTC's) Diagnostic trouble codes can be cleared from the memory two ways: [ul][*]The DRBIII® scan tool[*]Power to the BCM can be disconnected for ten minutes by disconnecting the battery negative remote cable. [/ul] If the scan tool is to be used, refer to the Appropriate Diagnostic Information. CAUTION: Fault code 26 can be created if the in-car sensor thermistor is disconnected while the BCM is operating. This can happen by disconnecting connectors from the BCM or the ATC Control Head when the battery is connected (even if the ignition switch is OFF). To correct, clear the fault code 26 from the BCM.
#4
10-25-2019, 09:36 AM
I have an 02 sebring 2.7 LX. I recently had a problem with the interior not getting any heat. Any checking everything in the cooling, it turned out to be the blend door motor inside the actuator was dead. I picked up the Doorman replacement but found that black housing does not clip together well and will not stay closed. I was able to swap in the new motor from the doorman part into the original actuator. Everything is fine. The car interior is back together. Life moves on.
The question is that I tried this AC test on the car before I started. It stops at AC 48 and does not continue. How do I check for other codes that might be stored on a MTC? There isn't an AC button. The next test was to install the new doorman actuator. The test still stopped at AC 48. Then I swapped the motor and tested again, still stopping at AC 48.
I thinking I'm reading this correctly... The number then the error code message.
48 A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND
The question is that I tried this AC test on the car before I started. It stops at AC 48 and does not continue. How do I check for other codes that might be stored on a MTC? There isn't an AC button. The next test was to install the new doorman actuator. The test still stopped at AC 48. Then I swapped the motor and tested again, still stopping at AC 48.
I thinking I'm reading this correctly... The number then the error code message.
48 A/C CONTROL MODE DOOR INPUT SHORTED TO GROUND
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