Ford Fiesta: Module Communications Network / Communications Network - Overview. Description and Operation
Overview
Multiplexing
is a method of sending 2 or more signals simultaneously over a single
circuit. Multiplexing allows 2 or more electronic modules (nodes) to
communicate over a twisted wire pair [data (+) and data (-)] network.
The information or messages that can be communicated on these wires
consists of commands, status or data. The advantage of using
multiplexing is to reduce the weight of the vehicle by reducing the
number of redundant components and electrical wiring.
The vehicle has 2 module communication networks connected to the DLC
, located under the instrument panel. The communication networks are:
-
High Speed Controller Area Network (HS-CAN)
-
Medium Speed Controller Area Network (MS-CAN)
System Operation
System Diagram
Item
Description
1
DLC
2
PSCM
3
FCDIM (without touchscreen display)
4
HVAC module
5
ACM
6
GPSM (if equipped)
7
TCM (automatic transmission)
8
OCSM
9
PCM
10
ABS module
11
I..
Other information:
Special Tool(s) /
General Equipment
Pick Hook
Interior Trim Remover
Removal
Release the clip and remove the rear door sail panel.
Use the General Equipment: Interior Trim Remover
Remove the interior door handle screw cover.
Use the General Equipment: Pick Hook
..
Special Tool(s) /
General Equipment
Grinder
Hot Air Gun
Knife
MIG/MAG Welding Equipment
Materials
Name
Specification
Metal Bonding AdhesiveTA-1, TA-1-B, 3M™ 08115, LORD Fusor® 108B, Henkel Teroson EP 5055
-
Seam SealerTA-2-B, 3M™ 08308, LORD Fusor® 803DTM
-
Flexible Foam Repair3M™ 08463, LORD Fuso..
Categories
Preliminary Inspection
Verify the customer concern by carrying out a road test on a
smooth road. If any vibrations are apparent, Refer to the Symptom
Chart: NVH.
To maximize tire performance, inspect for signs of incorrect
inflation and uneven wear, which may indicate a need for balancing,
rotation or front suspension alignment.
Correct tire pressure and driving techniques have an
important influence on tire life. Heavy cornering, excessively rapid
acceleration and unnecessary sharp braking increase tire wear.
Correct
tire pressure and driving techniques have an important influence on
tire life. Heavy cornering, exce
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