Ford Fiesta: Auxiliary Climate Control / Auxiliary Climate Control - Overview. Description and Operation
Overview
The
electric booster heater is a heater element made up of ceramic
resistors that is mounted in the heater core and evaporator core
housing. It directly heats the airflow into the passenger compartment
rapidly in the case of low ambient temperatures.
The electric booster heater system includes the following components:
-
Electric booster heater
-
Electric booster heater relay 1 and electric booster heater relay 2
-
IPC
-
HVAC control module
System Operation
Electric Booster Heater
Item
Description
1
HS-CAN
2
Ambient Air Temperature (AAT) sensor
3
Electric booster heater
4
HVAC control module
5
Electric booster heater relay 1
6
Electric booster heater relay 2
7
IPC
8
PCM
9
ECT senso..
Other information:
System Operation
Neutral
In NEUTRAL there is no powerflow through the transmission.
The vehicle will stay stationary.
1st Gear
The input shaft drives the output shaft.
The 1st gear on the input shaft drives 1st gear on the output shaft.
The 1st/2nd gear synchronizer is splined to the output shaft.
When the 1-2 synchronizer sleev..
Removal
NOTE:
Removal steps in this procedure may contain installation details.
NOTE:
This step is only necessary when installing a new component.
NOTE:
The PMI process must begin with the current BCM installed. If the
current BCM does not respond to the diagnostic scan tool, the tool may
prompt for As-Built Data as part of the repair.
A minimum of 2 RKE transm..