Section 1154 (HVAC Control System - General Information And Diagnostics - (Except Hybrid))
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Description And Operation
- Diagnostic Tests
- Climate Control System
- Notes
- Principles of Operation
- Compressor Anti-Slugging Strategy
- The Refrigerant Cycle
- Inspection and Verification
- Alternate Diagnostic Methods - Electronic Automatic Temperature Control (EATC) Module Only
- Electronic Manual Temperature Control (EMTC) Module and Electronic Automatic Temperature Control (EATC) Module DTC Chart
- Symptom Chart - Climate Control System
- Symptom Chart - Noise, Vibration and Harshness (NVH)
- Pinpoint Tests
- Notes
- Pinpoint Test A: DTC B1251 or B1253 - Air Temperature Internal Sensor Circuit Open or Short to Ground
- Pinpoint Test B: DTC B1255 or B1257 - Air Temperature External Sensor Circuit Open or Short to Ground
- Pinpoint Test C: DTC B2426, B2427, B2795 or B2796 - Solar Radiation Sensor Circuit Open or Short to Ground
- Pinpoint Test D: DTC B2826 or B2827 - Front Evaporator Temp Sensor Circuit Failure or Short to Ground
- Pinpoint Test E: The Air Inlet Door is Inoperative
- Pinpoint Test F: Incorrect/Erratic Direction of Airflow From Outlets
- Pinpoint Test G: The EATC System is Inoperative, Intermittent or Incorrect Operation
- Pinpoint Test H: Insufficient, Erratic or No Heat
- Pinpoint Test I: The Air Conditioning (A/C) is Inoperative/Does Not Operate Correctly
- Pinpoint Test J: The Air Conditioning (A/C) is Always On
- Pinpoint Test K: Temperature Control is Inoperative/Does Not Operate Correctly
- Pinpoint Test L: The Blower Motor is Inoperative - EMTC
- Pinpoint Test M: The Blower Motor Does Not Operate Correctly - EMTC
- Pinpoint Test N: The Blower Motor is Inoperative - EATC
- Pinpoint Test O: The Blower Motor Does Not Operate Correctly - EATC
- Pinpoint Test P: DTC B1676 - Battery Voltage Out of Range
- Component Tests
- Resistor - Blower Motor
- Temperature Sensor - In-Vehicle
- Temperature Sensor - Ambient
- Defrost/Panel/Floor Door Actuator
- Blend Door Actuators
- Heater Core
- Heater Core - Plugged
- Heater Core - Pressure Test
- Heater Core - Bench Test
- Evaporator/Condenser Core - On-Vehicle Leak Test
- A/C Compressor - External Leak Test
- Climate Control System
- General Procedures
- Air Conditioning (A/C) Odor Treatment
- Air Conditioning (A/C) Clutch Air Gap Adjustment
- Electronic Leak Detection
- Fluorescent Dye Leak Detection
- Air Conditioning (A/C) System Flushing
- Air Conditioning (A/C) System Recovery, Evacuation and Charging
- Refrigerant System Filtering Following Air Conditioning (A/C) Compressor Installation
- Refrigerant Oil Adding
- Refrigerant Identification Testing