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Auxiliary Fuel Supply Port
DescriptionItem
Ford Motor Company Part1
Cut off top of Port on tank cap2
Insert tube into port and fix connector to tank cap3
Drive Direction4
FordTransit 2006.5 (April 2006–)
Date of Publication: 12/2006
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4.1 Communications Network
4.1.1 CAN-Bus System Description
and Interface
WARNING: Do not tamper with, cut
into or connect to any of the
CAN-Bus interface wiring or
connectors. The addition of
unapproved CAN-Based modules
could impact the safe operation of
the vehicle.
CAN uses propriety message sets to
communicate between the devices shown, via
Medium Speed (MS), High Speed (HS), Private
and Public Buses. In addition there is localised
application of LIN and ISO 9141 K-line serial links.
CAN-Bus System
DescriptionItem
High Speed CAN1
Medium Speed CAN2
Medium Speed CAN(Multimedia)3
ISO9141 K-line4
LIN BUS5
Private High Speed CAN6
FordTransit 2006.5 (April 2006–)
Date of Publication: 12/2006
4 Electrical
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Page 91 of 234

CAN-Bus System (Architecture)
Antilock Brake SystemKCentral Junction Box (Passenger Junction
Box)
A
Powertrain Control ModuleLVoice Recognition Module/Wireless
connection (blue tooth)
B
Steering Angle SensorMAudio Control Unit (Radio/CD)C*
Yaw Rate SensorNNavigation (Radio/CD)D*
Diagnostic ConnectorPRemote Keyless EntryE
Park Aid ModeQPassive Anti-Theft SystemF
Restraints Control ModuleRRain SensorG
Hybrid Electronic ClusterSBattery Backed Sounder (BBS)H
Interior Motion Sensing (IMS)J
* Either Audio Control Unit or Navigation
4.1.2 Central Junction Box (CJB)
WARNING: Unapproved and/or
incorrect connection to any of the
mating wiring can cause either the
associated systems to shut down
(overload protection), or permanent
damage to the Central Junction Box
itself.
Basic vehicle functions (for example: headlights,
front wipers) are available on all Central Junction
Boxes (CJBs). Increased vehicle features are
available on the mid- and high-level CJBs, as per
the following list:
Incremental FunctionalityCentral Junction Box (CJB)
6C1T-14A073-A_ (low)
(in addition to low level CJB)6C1T-14A073-B_ (mid)
Reverse CyclingRemote Keyless Entry
Slam LockingVIN Identification
Front Fog LightsPerimeter Alarm
Theatre Dimming (Interior Lights)Central and double Locking
Heated WindscreenZonal unlocking
Heated MirrorsAuto Locking on drive away
Rear WipersAuto Relocking on time out
Heated Rear Window(s)Crash Activated unlocking
Mis-locking feedback (audible
and visual)
(in addition to mid-level CJB)6C1T-14A073-C_ (high)
Ambient air temperature meas-
urement
Battery Backed Sounder (BBS)
Rain SensorInterior Motion Sensor (IMS)
Daytime Running LightsZonal opposite door relocking
AutolampsConfigurable unlocking
Fuel Pump Control (petrol only)CAT 1 Alarm (BBS, IMS & Rear
Glass Breakage)
Cruise control
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Date of Publication: 12/2006
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The Central Junction Box (CJB) is the prime
control module in the vehicle’s electrical
architecture. It is responsible for management of
most of the vehicle’s lighting, locking and security
systems. The following chart details the
consequences of overloading of the Central
Junction Box.
Maximum Loads on Central Junction Box
Overload ConditionMaximum
Load
Load TypeComponentFunction
Output driver damage5A/100msecRelayLow Side DriverBattery Discon-
nect Switch
Overheat - output shutdown75W@13VBulbLow Side DriverEntry Illumina-
tion
Overheat - output shutdown8A normal, 16A/
10msec in-rush
Electro-mechan-
ical horn
High Side DriverAlarm Siren
Output shutdown if more
than 35mA drawn
25mALogic supplyVoltage trackerAccelerator
Pedal
Blown fuse - if bigger fuse
fitted, relay and/or printed
circuit board damaged
100W@13VBulbRelayBattery Saver
Supply
Blown fuse - if bigger fuse
fitted, relay and/or printed
circuit board damaged
60W@13VBulbRelayLicence Plate
Overheat-output shutdown11W@13VBulbHigh Side DriverCluster Dimming
Blown fuse - if bigger fuse
fitted, relay and/or printed
circuit board damaged
63W@13VBulbRelayPosition Lamp
Left Hand
Blown fuse - if bigger fuse
fitted, relay and/or printed
circuit board damaged
43W@13VBulbRelayPosition Lamp
Right Hand
Overheat-output shutdown3x21W@13VBulbTurn Indicator
Left Hand
Overheat-output shutdown3x21W@13VBulbTurn Indicator
Right Hand
Blown fuse - if bigger fuse
fitted, relay and/or printed
circuit board damaged
15A (fuse
limited)
LatchRelayLock/double
lock
Relay and/or printed circuit
board damaged
5,42A@13V,
2,5mh
LatchUnlock Relay
FordTransit 2006.5 (April 2006–)
Date of Publication: 12/2006
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Central Junction Box - as viewed in-car position
DescriptionItem
Part labelA
4.1.3 Circuit Diagram
When designing electrical circuits, or making
alterations, the following must be considered:
•Current rating of wiring, see following
specification chart (Current Rating of Wire
Sizes)
•Any voltage drop in the circuit should not
lower the terminal voltage at consumption
point to below 95% of battery voltage.
•Do not cut into the original loom.
•Additional earth returns should be included to
support new equipment.
•A supplementary circuit diagram and
accompanying instructions should be added
to the Owner’s Information or a separate
Manual supplied with the vehicle for each
unique component.
NOTE: For further information please contact
your local National Sales Company
representative, or Local Ford Dealer.
FordTransit 2006.5 (April 2006–)
Date of Publication: 12/2006
4 Electrical
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4.2 Module Communications Network—Specifications
4.2.1 Circit Diagram
Current Rating of Wire Sizes
Maximum Continuous current (A)
50°c30°cmW/m@20°CCross Sectional Area
--84.80.22
4.9754.40.35
7.71137.10.5
9.81424.70.75
13.51918.51
17.02412.71.5
22.7327.62.5
29.8424.714
38.3543.146
51.8731.8210
69.6981.1616
91.61290.74325
1121580.52735
1401980.36850
1742450.25970
2072920.19695
2443440.153120
FordTransit 2006.5 (April 2006–)
Date of Publication: 12/2006
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4.3 Charging System
4.3.1 General Information and
Specific Warnings
The Transit electrical system is a 12-Volt supply
with a negative earth return. The alternator and
battery equipment used as standard are
designed for normal operations with the type of
engine fitted. Higher capacity batteries are
available as standard production options and
special vehicle options. Before installing additional
electrical equipment check that the battery
capacity, harness load capability, and alternator
output are suitable for the extra load.
The battery capacity and charge available from
the alternator must be adequate to ensure
engine cranking in unfavorable climatic conditions
but excessive battery capacity could damage
the starter motor.
The Transit utilizes multiplexed vehicle electronics
- it is recommended that the appropriate Ford
proprietary accessory systems are used.
Inappropriate or incorrect connection of
additional equipment could cause mis-operation,
or damage to the vehicle, and so invalidate any
warranty.
Additional connection points are provided
specifically for customer use (except M1 and M2
Bus), and are located on the outside of the
driver's seat base.
Do not jump-start the vehicle directly from the
battery. Use designated jump-start points. Refer
to the owners literature.
4.3.2 Power Management
Settings
There are four Power Management Settings
available:
•Factory
•Transport
•Normal
•Crash
Factory and Transport modes are only active
with ignition off; with ignition on, the vehicle
operates with full functionality. When in Transport
mode, the interior lights, clocks, and power
locking and alarms (where fitted) do not work.
It is possible to switch from Transport Mode to
Normal Mode without the use of any ancillary
equipment, but not vice versa. To change mode,
the brake pedal must be depressed five times,
and the hazard warning switch operated twice
(in any combination) within 10 seconds.
WARNING: It is not possible to return
the transport setting without using
the vehicle's diagnostics.
At the end of production, the vehicle is
configured to the transport setting to minimize
power consumption. As part of the Pre Delivery
Inspection process at the Ford dealership, the
vehicle is reconfigured to normal operation.
4.3.3 Electrical Conversions
Operator requirements for additional and
specialised electrical equipment varies. The
vehicle converter/modifier must, therefore,
consider the following points when designing the
installation:
•Legality and regulatory conformity of the base
vehicle.
•Drive-ability and serviceability of the base
vehicle.
•The effect of regulations governing the
proposed conversion including National
Legislation in the country of sale.
•The method of integrating the circuit into the
base vehicle.
•No additional circuits are to be run alongside
the electrical circuits (shown in blue in the
figure below) associated with the
Management System (shown in green in the
figure below), due to the possible Electro
Motive Force (EMF) effect on the circuits.
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Electrical circuits associated with Management System
•The base vehicle will be equipped with a single
or dual battery system (with battery disconnect
switch). Additional batteries can be fitted in
conjunction with a battery disconnect switch
(cut-off relay), described in the section Battery
and Cables.
•When auxiliary electrical systems are added
to the vehicle, it is recommended that the
additional circuits are designed to be used with
the Special Vehicle Option Auxiliary Fuse Box
and / or the Link Harnesses, to maintain the
integrity of the electrical system.
Refer to: 4.13 Fuses and Relays (page 119).
•The materials and installation must meet the
quality standards described in this section.
•Any additional equipment or components must
be designed such that they have no Electro
Motive Force effect on the vehicle.
•The alternator and Engine Management
System [EMS, also referred to as Powertrain
Control Module (PCM)] are interdependent.
•The alternator should not be used as a source
for a conventional D+ signal.
Refer to: 4.14 Special Conversions (page 131).
•Take special care with the routing of existing
electrical looms within the vehicle to avoid
damage when fitting additional equipment.
WARNING: The fitting of voltage
boosters or other devices to
enhance alternator output are not
allowed. The fitting of such devices
will not only invalidate vehicle
warranties, but could damage either,
or both, the alternator and Engine
Management System or Powertrain
Control Module (PCM), and possibly
affect vehicle legal compliance.
Check local legislation.
Please see below the note concerning installation
of equipment containing an electric motor.
Where vehicles are equipped with twin battery
system, no additional connections should be
made to the terminal posts of the start relevant
battery. Further connections should only be made
via the customer connection point.
When an additional battery is fitted, this must be
connected to the appropriate battery.
Refer to: 4.4 Battery and Cables (page 98).
Disconnect all batteries, including earth, and the
alternator multi-plug prior to using welding or
cutting equipment and before working on any
electrical installations.
FordTransit 2006.5 (April 2006–)
Date of Publication: 12/2006
4 Electrical
96E84706