Ford Fusion: Tire Pressure Monitoring System (TPMS) / Tire Pressure Monitoring System (TPMS) - Overview. Description and Operation
Overview
The BCM uses tire pressure sensors to monitor tire pressure. The sensors use radio signals to transmit the tire pressure to the RTM. The RTM sends the information to the BCM over a LIN. The tire pressure sensors are battery operated and mounted to the valve stems. The IPC illuminates the TPMS
warning indicator and the message center displays a message when a
fault is present or when the tire pressure falls below the low pressure
limit.
System Operation
System Diagram
Item
Description
1
IPC
2
BCM
3
IPC message center display
4
TPMS warning indicator
5
LH front TPMS sensor
6
RH front TPMS sensor
7
LH rear TPMS sensor
8
RH rear TPMS sensor
9
RTM
10
GWM
Network Message Chart
RTM
TPMS Network Input M..
Other information:
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 HSWM installed. If the current HSWM does not respond to the diagnostic scan tool, the tool may prompt for As-Built Data as part of the repair.
Using a diagnostic scan tool, begin ..
The AWD system consists of the following:
Power transfer unit (PTU)
Front and rear halfshafts
Rear axle and driveshaft
AWD relay module
Rear axle with coupling device
Torque
from the engine is transferred through the transmission to the Power
Transfer Unit (PTU). This torque is transferred from the driveshaft to
the rear axle, which drives the rear halfshafts. Th..