Theory Of Operation
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is less than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is greater than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is less than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is greater than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The switch input changes when the switch is pushed down. A stored DTC 33 indicates that the A/C mode switch was stuck in a pushed position for more than 5 seconds, but has since returned to its normal state. An active DTC 33 indicates that the A/C mode switch is stuck in a pushed position. An active DTC 33 will prevent the control from entering diagnostic mode and performing certain diagnostic functions. It will also prevent proper A/C mode switch and status indicator function. For additional information about the A/C Heater Control's on-board diagnostics, refer to DIAGNOSIS AND TESTING .
The switch input changes when the switch is pushed down. A stored DTC 34 indicates that the EBL mode switch was stuck in a pushed position for more than 5 seconds, but has since returned to its normal state. An active DTC 34 indicates that the EBL mode switch is stuck in a pushed position. An active DTC 34 will prevent the control from performing certain diagnostic functions and it will prevent proper EBL mode switch and status indicator function. For additional information about the A/C Heater Control's on-board diagnostics, refer to DIAGNOSIS AND TESTING .
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is less than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is greater than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is less than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is greater than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The switch input changes when the switch is pushed down. A stored DTC B100A indicates that the Recirculation mode switch was stuck in a pushed position for more than 5 seconds, but has since returned to its normal state. An active DTC B100A indicates that the Recirculation mode switch is stuck in a pushed position. An active DTC B100A will prevent proper Recirculation mode switch and status indicator function.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is less than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is greater than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The switch input changes when the switch is pushed down. A stored DTC B1001 indicates that the A/C mode switch was stuck in a pushed position for more than 5 seconds, but has since returned to its normal state. An active DTC B1001 indicates that the A/C mode switch is stuck in a pushed position. An active DTC B1001 will prevent proper A/C mode switch and status indicator function.
The switch input changes when the switch is pushed down. A stored DTC B1016 indicates that the EBL mode switch was stuck in a pushed position for more than 5 seconds, but has since returned to its normal state. An active DTC B1016 indicates that the EBL mode switch is stuck in a pushed position. An active DTC B1016 will prevent proper EBL mode switch and status indicator function.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is less than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The purpose of actuator calibration is to determine the total span of door travel between physical stops. To calibrate the actuator, the A/C Heater Control first moves the door to its soft stop, and then counts the number of pulses it takes to move the door to its other stop. An expected range of span is stored in the control's memory. If the measured calibration value is greater than the expected range for this actuator, this DTC will set. Refer to DIAGNOSIS AND TESTING for additional information.
The EBL and AC status indicators will flash when this DTC is active. The status indicators will continue to flash across ignition cycles and battery disconnects. The vehicle line and country code data transmitted on the CAN B Bus must correspond with data stored in the A/C Heater Control to stop the status indicators from flashing.
The HVAC System Test consists of three tests. Test 2 tests A/C system performance, Test 3 tests for mode switch, mode and temp pot, and door actuator circuit faults, Test 4 tests for door actuator calibration faults. Either perform all three tests for a complete system test or perform an individual test if diagnosing a specific symptom.
An active DTC 33 will prevent the control from entering diagnostic mode and performing certain diagnostic functions, it will also prevent proper A/C mode switch and status indicator function. An active DTC 34 will prevent the control from performing certain diagnostic functions and it will prevent proper EBL mode switch and status indicator function. In addition, a short or an open (C850) Blower Switch Position Signal circuit will also prevent the control from entering diagnostic mode. For additional information about the A/C Heater Control's on-board diagnostics, refer to DIAGNOSIS AND TESTING .