Fuel Fired Booster Heater (NAS Only)
Up to VIN: XXXXXXX
| ITEM | DESCRIPTION |
|---|---|
| 1 | Connection to heater |
| 2 | Electrical connector |
| 3 | Fuel Fired Booster Heater (FFBH) coolant pump |
| 4 | Blank off connection |
| 5 | Connection to engine cooling system |
| 6 | Fuel Fired Booster Heater Control Module (FFBHCM) |
From VIN: XXXXXXX
| ITEM | DESCRIPTION |
|---|---|
| 1 | Electrical connector |
| 2 | Fuel Fired Booster Heater (FFBH) coolant pump |
| 3 | Fuel Fired Booster Heater Control Module (FFBHCM) |
| 4 | Connection to heater |
| 5 | Connection to engine cooling system |
The Fuel Fired Booster Heater (FFBH) only uses the FFBH coolant pump. The FFBH coolant pump is used to pump the coolant through the heater system. The FFBH coolant pump is controlled by the Automatic Temperature Control Module (ATCM) through the Fuel Fired Booster Heater Control Module (FFBHCM).
Fuel Fired Booster Heater Control Module (NAS only)
The Fuel Fired Booster Heater Control Module (FFBHCM) controls and monitors operation of the Fuel Fired Booster Heater (FFBH) coolant pump. Power for the FFBHCM is provided by a permanent feed from the QCCM (Quiescent Current Control Module) integrated in the RJB (Rear Junction Box). A Local Interconnect Network (LIN) bus connection provides the communication link between the FFBHCM and the ATCM (Automatic Temperature Control Module). The FFBHCM also has:
- A ground connection
- Power feed and ground connections with the FFBH coolant pump.