QuestionI was told by another mechanic that because air on my 2006 Chrysler 300 is consistently coming in through the vents whether the ac/heater is on recirculate or off that the recirculation door actuator is probably not calibrated or stuck in the open position.
What is involved in repairing this and would you have a ballpark figure on the cost of fixing this part? Any help.
AnswerENTERING DISPLAY DTC MODE - MTC SYSTEM
To enter the MTC system's Display DTC Mode, perform the following:
NOTE: 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. If this occurs, refer to *A/C HEATER CONTROL WILL NOT ENTER DIAGNOSTIC MODE (MTC) (Refer to 28 - DTC-Based Diagnostics/HVAC - Diagnosis and Testing) .
1. Turn the ignition to the On position.
2. Turn the blower motor control (1) to the On position.
3. Press the A/C mode switch (2) down, turn the blower motor control to the Off position, wait until both LEDs illuminate (approximately 5 seconds) and then release the A/C switch. If there are active or stored DTCs to display, the A/C status indicator (3) will begin to flash. If there are no active or stored DTCs to display, the LEDs on the A/C-heater control (4) will turn off and the system will automatically exit the mode of operation.
4. To manually exit Display DTC Mode, either turn the ignition off or disconnect the negative battery cable from the battery.
DISPLAY SEQUENCING - MTC SYSTEM
MTC system DTCs will display in ascending numerical order but not in chronological order. Active DTCs will display before stored DTCs. If there are active and stored DTCs for the same parameter, the A/C-heater control will NOT display the stored DTC for that parameter. The EBL status indicator will illuminate and remain illuminated while the A/C-heater control is displaying stored DTCs. After displaying all active and stored DTCs, the A/C-heater control restarts at the beginning, displaying all DTCs again. To restart the sequence from the beginning while the A/C-heater control is displaying DTCs, press the EBL mode switch down, and then release it. This will cause the A/C-heater control to quit displaying the present code, turn off all LEDs for 2.0 seconds, and then it will begin flashing all DTCs again from the beginning.
READING DIAGNOSTIC TROUBLE CODES - MTC SYSTEM
All active and stored DTCs for the MTC system have an assigned code number. The A/C status indicator flashes in a series of pulses to display the code numbers. Each pulse has an indicator on time of 0.5 seconds. The tens unit value (1) is flashed first followed by the ones unit value (2). A 2.0 second indicator off-time (3) separates the unit values. When displaying multiple DTCs, the A/C status indicator will go off for five seconds (4) before displaying the next DTC (5). After displaying all DTCs (6), the sequence will repeat until exiting Display DTC Mode.
ACTIVE DTCs - ATC AND MTC SYSTEMS
To diagnose HVAC system DTCs (Refer to 28 - DTC-Based Diagnostics/HVAC - Diagnosis and Testing) .
STORED DTCs - ATC AND MTC SYSTEMS
The HVAC System Test provides a means for diagnosing stored DTCs (Refer to 28 - DTC-Based Diagnostics/HVAC - Standard Procedure) . The HVAC System Test consists of multiple diagnostic procedures which cover:
A/C System Performance
System Controls
Air-door Functionality
Either perform the entire diagnostic procedure for a complete system test or perform an individual procedure if diagnosing a specific symptom, condition, or DTC
