Climate Control System: Notes
WARNING: This page is about a different car, the 2007 Mercury Mariner and 2007 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Special Tools
| Illustration | Tool Name | Tool Number |
|---|---|---|
| Vehicle Communication Module (VCM) and Integrated Diagnostic System (IDS) software with appropriate hardware, or equivalent scan tool | ||
| R-134a Manifold Gauge Set | 176-R032A or equivalent | |
| Connector, Refrigerant Pressure Line | 412-093 (T94P-19623-E) | |
| Set, A/C Fittings | 412-DS028 (D93L-19703-B) or equivalent | |
| Refrigerant Leak Detector | 216-00001 or equivalent | |
| 73III Automotive Meter | 105-R0057 or equivalent | |
| Vacuum Pump Kit | 416-D002 (D95L-7559-A) or equivalent |
| Item | Part Number | Description |
|---|---|---|
| 1 | - | Vacuum control motor (footwell airflow door) |
| 2 | - | Floor airflow door |
| 3 | - | Vacuum control motor (panel vent airflow door) |
| 4 | - | Panel vent airflow door |
| 5 | - | Vacuum control motor (defroster airflow door) |
| 6 | - | Defrost airflow door |
| 7 | - | Heater core |
| 8 | - | Air temperature control door |
| 9 | - | Evaporator core |
| 10 | - | Outside air inlet door |
| 11 | - | Vacuum control motor (outside air inlet door) |
| 12 | - | Recirculating air port |
| 13 | - | Blower motor |
| 14 | - | A/C vacuum reservoir |
| 15 | - | To A/C vacuum reservoir |
| 16 | - | A/C vacuum check valve |
| 17 | - | A/C function selector switch |
NOTE:
A leak in the vacuum control circuit may occur during acceleration (slow leak) or may exist at all times (large leak) and may exist only when specific functions are selected (indicating a leak in that portion of the circuit). The vacuum hoses used in the passenger compartment control circuit are constructed from PVC plastic material. The vacuum hoses used in the engine compartment are constructed of Hytrel®. Because of the materials used, never pinch off the vacuum hoses to locate a leak during diagnosis. A golf tee can be used as a plug when it is necessary to plug one end of the vacuum hose for leak test purposes.
FUNCTION SELECTOR SWITCH VACUUM APPLICATION CHART
| Switch Port | Color | Function | Function Selector Switch Position | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| MAX A/C | A/C | Panel | Floor/ Panel | OFF | Floor | Floor/ Defrost | Defrost | |||
| 1 | White | Recirc/fresh | V | NV | NV | NV | V | NV | NV | NV |
| 2 | Yellow | Defrost | V | V | V | V | V | V | NV | NV |
| 3 | Red | Floor | NV | NV | NV | V | V | V | V | NV |
| 4 | Orange | Panel/Floor | V | V | V | V | NV | NV | NV | NV |
| 5 | Black | Vacuum source | V | V | V | V | V | V | V | V |
| 6 | Not Used | Not Used | N/A | N/A | N/A | N/A | N/A | N/A | N/A | N/A |
| V=Vacuum NV=No vacuum |
||||||||||