Control Diagram - 1 Of 2 - Fuel Fired Booster Heater
A = HARDWIRED: O = LOCAL INTERCONNECT NETWORK (LIN) BUS: AL = PULSE WIDTH MODULATION (PWM): AV = HIGH SPEED (HS) CONTROLLER AREA NETWORK (CAN) COMFORT SYSTEMS BUS: AX = FLEXRAY.
| ITEM | DESCRIPTION |
|---|---|
| 1 | Automatic Temperature Control Module (ATCM) |
| 2 | Powertrain Control Module (PCM) |
| 3 | Body Control Module/Gateway Module (BCM/GWM) assembly |
| 4 | Touch Screen (TS) |
| 5 | Fuel Fired Booster Heater Control Module (FFBHCM) |
| 6 | Fuel Fired Booster Heater (FFBH) coolant pump |
| 7 | FFBH fuel pump |
| 8 | FFBH coolant changeover valve (on vehicles with timed climate control only) |
| 9 | Ground |
| 10 | Power supply |
| 11 | Engine Coolant Temperature (ECT) sensor |
| 12 | Ambient Air Temperature (AAT) sensor |