Battery Monitoring Sensor (Bms) - Ford TRANSIT 2016.75 Mounting Manual

4.4.9 Battery Monitoring Sensor (BMS)

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Item
1 Battery Monitoring Sensor (BMS) GK2T-10C652-A*
2 Plug-in connection
3 Connection to Negative Terminal of Main Battery Post
4 Jumper Cable (GK2T-14301-A*) only with twin batteries
5 1x M8 nuts. Do not loosen or remove
6 1x M6 nut. Do not loosen or remove
7 Front of vehicle direction
CAUTION: Do not permanently remove
jumper cable (GK2T-14301-A*) from
BMS.
The BMS continuously monitors the condition of
the main battery (or twin batteries). To do this, it
is bolted directly to the negative terminal of the
battery. It is recommended that this is not
removed. However, if removal is required, please
refer to the ETIS workshop manual, local Ford
dealer or customer services.
The BMS re-calibrates itself at regular intervals.
This occurs during a rest period at key off, when
the battery closed-circuit current is less than
100mA. The rest period must last for at least three
hours. If the system cannot carry out a
re-calibration then it is unable to establish the
correct state of charge of the battery. In this case,
the Start-Stop system may be deactivated.
EU FORD TRANSIT 2016.75
7
Local Interconnect Network (LIN) and Battery Positive +12V (B+) Feed
3
6
Description
See 'Battery Cable Fixing Torque'
It is recommended that the total Ampere
consumption, in sleep mode, does not exceed
100mA. This is because BMS will not be able to
accurately correlate the battery state of charge.
Note there is approximately 20mA of key off load
from existing Ford fit systems so the additional
maximum is 80mA of converter fit system. Any
third party installations should ideally be activated
via Ignition or engine RUN. However, a sleep mode
of 100mA is still high and will lead to deep
discharge. Regardless of battery system, long
periods of discharge may necessitate long periods
of recharge. See 'Power and Connectivity Usage
Recommendation' table at the end of this section.
After Converter system is installed, it is
recommended to measure total key off load to
battery with a clamp on ammeter calibrated and
sensitive to mili ampere's (mA). Perform this test
after 10 minutes of key off with all doors shut so
that the vehicle remains in sleep mode.
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Date of Publication: 03/2018
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