Lincoln Aviator: Supplemental Climate Control / Description and Operation - Supplemental Climate Control - System Operation and Component Description
System Diagram
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| Item | Description |
|---|---|
| 1 | SOBDMC |
| 2 | BCMC |
| 3 | PCM |
| 4 | Cabin Coolant Heater |
| 5 | Cabin heater coolant temperature sensor |
| 6 | Cabin heater coolant pump |
| 7 | Ambient Air Temperature (AAT) sensor |
| 8 | Engine Coolant Temperature (ECT) sensor |
Network Message Chart - Module Network Input Messages - SOBDMC Cabin Coolant Heater
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Engine Coolant Temperature Data | PCM | This message contains raw value from the engine coolant temperature sensor. |
| Ambient air temperature filtered | PCM | This message contains filtered value from the ambient air temperature sensor. |
System Operation
Cabin Coolant Heater System
The cabin coolant heater system provides warm coolant to the heater core to warm the passenger compartment whenever the front DATC module requests heat and the vehicle is in a driving mode, remote started, or doing Cabin Drive-Conditioning.
A SOBDMC controlled cabin coolant heater warms the coolant.
The cabin heater coolant diverter valve allows two modes: Either an isolated coolant loop with cabin coolant heater, heater core, and cabin heater coolant pump or a combined loop of those components along with the engine and other coolant components.
A cabin heater coolant temperature sensor in the cabin heater system provides the PCM with coolant temperature information.
Component Description
Cabin Heater Coolant Pump
The cabin heater coolant pump is controlled by the PCM and provides coolant to the cabin coolant heater system while the vehicle is in a driving mode, remote started, or doing Cabin Drive-Conditioning.
Cabin Coolant Heater ( PTC Heater) ( PHEV only)
The cabin coolant heater has both low voltage and high voltage electrical connections. The low voltage circuits are used for controlling the unit, while the high voltage circuits are used for heating the coolant. The cabin coolant heater uses electricity, or more accurately, the heat for resistance in electrical circuits to quickly raise the temperature of the coolant to normal operating temperature. The SOBDMC sends power to the cabin coolant heater and controls the PWM circuit to the heater.
Cabin Heater Coolant Temperature Sensor (PTC Heater) ( PHEV only)
The cabin heater coolant temperature sensor is connected to the PCM. The sensor provides the coolant temperature information to the PCM.
Heater Core
The heater core consists of fins and tubes arranged to extract heat from the engine coolant and transfer the heat to air passing through the plenum.
Cabin Heater Coolant Diverter Valve
The default state of the cabin heater coolant diverter valve is de-energized, placing the system in combined loop mode. Coolant flows out of the engine, then back, in the following order:
- cabin heater coolant pump
- cabin coolant heater
- cabin heater coolant temperature sensor
- heater core
- cabin heater coolant diverter valve
- thermostat housing
- main electric water pump
When energized by the PCM the cabin heater coolant diverter valve places the system into the isolated loop mode. Coolant flows out of the valve, then back, in the following order:
- cabin heater coolant pump
- cabin coolant heater
- cabin heater coolant temperature sensor
- heater core
Description and Operation - Supplemental Climate Control - Overview
Overview
The cabin coolant heater system provides warm coolant to the heater core to warm the passenger compartment whenever the front DATC module requests heat and the HEV is in a driving mode, remote started, or doing Cabin Drive Conditioning...
Removal and Installation - Cabin Coolant Heater
Removal
NOTE:
Removal steps in this procedure may contain installation details.
With the vehicle in NEUTRAL, position it on a hoist.
Refer to: Jacking and Lifting (100-02 Jacking and Lifting, Description and Operation)...
Other information:
Lincoln Aviator 2020-2025 Service Manual: Diagnosis and Testing - Torque Converter Clutch (TCC)
Symptom Chart Torque Converter Clutch (TCC) For torque converter operation, REFER to: Torque Converter (307-01A Automatic Transmission - 10-Speed Automatic Transmission – 10R60, Description and Operation). Torque Converter Clutch (TCC) Condition Possible Sources Action TCC does not apply TCC solenoid mechanically stuck OFF INSTALL a new TCC solenoid...
Lincoln Aviator 2020-2025 Service Manual: Diagnosis and Testing - Body Control Module (BCM)
Diagnostic Trouble Code (DTC) Chart Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods (100-00 General Information, Description and Operation). Diagnostic Trouble Code Chart Module DTC Description Action BCM B11D9:16 Vehicle Battery:Circuit Voltage Below Threshold GO to Pinpoint Test Y BCM B11D9:17 Vehicle Battery:Circuit Voltage Above Threshold GO to Pinpoint Test Z BCM U0100:87 Lost Communication With ECM/PCM "A":Missing Message GO to Pinpoint Test A BCM U0121:87 Lost Communication With Anti-Lock Brake System (ABS) Control Module:Missing Message GO to Pinpoint Test B BCM U0131:87 Lost Communication With Power Steering Control Module:Missing Message GO to Pinpoint Test C BCM U0151:87 Lost Communication With Restraints Control Module:Missing Message GO to Pinpoint Test D BCM U0155:87 Lost Communication With Instrument Panel Cluster (IPC) Control Module:Missing Message GO to Pinpoint Test E BCM U0166:87 Lost Communication With Auxiliary Heater Control Module:Missing Message GO to Pinpoint Test F BCM U0184:87 Lost Communication With Radio:Missing Message GO to Pinpoint Test G BCM U0198:87 Lost Communication With Telematic Control Module: Missing Message GO to Pinpoint Test H BCM U0199:87 Lost Communication With "Door Control Module A":Missing Message GO to Pinpoint Test I BCM U019B:87 Lost Communication With Battery Charger Control Module:Missing Message GO to Pinpoint Test J BCM U0200:87 Lost Communication With "Door Control Module B":Missing Message GO to Pinpoint Test K BCM U0208:87 Lost Communication With "Seat Control Module A":Missing Message GO to Pinpoint Test L BCM U0212:87 Lost Communication With Steering Column Control Module:Missing Message GO to Pinpoint Test M BCM U0230:87 Lost Communication With Rear Gate Module:Missing Message GO to Pinpoint Test N BCM U0232:87 Lost Communication With Side Obstacle Detection Control Module "A":Missing Message GO to Pinpoint Test O BCM U0233:87 Lost Communication With Side Obstacle Detection Control Module "B":Missing Message GO to Pinpoint Test P BCM U023A:87 Lost Communication With Image Processing Control Module A:Missing Message GO to Pinpoint Test Q BCM U0252:87 Lost Communication With Lighting Control Module-Rear "B":Missing Message GO to Pinpoint Test R BCM U0253:87 Lost Communication With Accessory Protocol Interface Module:Missing Message GO to Pinpoint Test S BCM U0256:87 Lost Communication With Front Controls Interface Module "A":Missing Message GO to Pinpoint Test T BCM U0293:87 Lost Communication With Hybrid/EV Powertrain Control Module "A":Missing Message GO to Pinpoint Test U BCM U1000:00 Solid State Driver Protection Active:Driver Disabled: No Sub Type Information GO to Pinpoint Test V BCM U2005:85 Vehicle Speed:Signal Above Allowable Range GO to Pinpoint Test W BCM U2100:00 Initial Configuration Not Complete:No Sub Type Information GO to Pinpoint Test X BCM U2101:00 Control Module Configuration Inomplete:No Sub Type Information GO to Pinpoint Test X BCM U2200:00 Control Module Configuration Memory Corrupt:No Sub Type Information GO to Pinpoint Test X BCM U3000:49 Control Module:Internal Electronic Failure GO to Pinpoint Test AA BCM U3006:16 Control Module Input Power “A”:Circuit Voltage Below Threshold GO to Pinpoint Test Y BCM U3006:17 Control Module Input Power “A”:Circuit Voltage Above Threshold GO to Pinpoint Test Z BCM U3006:1C Control Module Input Power “A”:Circuit Voltage Out of Range GO to Pinpoint Test Y BCM U3006:1C Control Module Input Power “A”:Circuit Voltage Out of Range GO to Pinpoint Test Z BCM U3007:16 Control Module Input Power "B":Circuit Voltage Below Threshold GO to Pinpoint Test Y BCM U3007:17 Control Module Input Power "B":Circuit Voltage Above Threshold GO to Pinpoint Test Z BCM U3013:16 Control Module Input Power "C":Circuit Voltage Below Threshold GO to Pinpoint Test Y BCM U3013:17 Control Module Input Power "C":Circuit Voltage Above Threshold GO to Pinpoint Test Z BCM U3014:16 Control Module Input Power "D":Circuit Voltage Below Threshold GO to Pinpoint Test Y BCM U3014:17 Control Module Input Power "D":Circuit Voltage Above Threshold GO to Pinpoint Test Z Symptom Chart Symptom Chart: Multifunction Electronic Modules Diagnostics in this manual assume a certain skill level and knowledge of Ford-specific diagnostic practices...
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Children and Airbags
WARNING: Airbags can kill or injure a child in a child restraint. Never place a rear-facing child restraint in front of an active airbag. If you must use a forward-facing child restraint in the front seat, move the seat upon which the child restraint is installed all the way back.
