Ford 2001 Ranger, Manual

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414-03B-5 414-03B-5 High Voltage/Traction Battery — Nickel Metal Hydride
DESCRIPTION AND OPERATION (Continued)
•
If the BCM receives a normal fault detection
•
To unlatch the IOM, the auxiliary battery negative
signal (no faults present) from the IOM, it cable must be removed for 30 seconds. Once this
activates the onboard charger and the traction is done, the vehicle will again charge normally.
battery is charged.
•
After unlatching, the DTC must still be cleared
from the BCM memory using a scan tool.
Operation During Over Temperature Conditions
In the event an IOM temperature sensor detects an
•
If, after unlatching the IOM, the fault resets
over-temperature or a rapid rise in temperature, it
immediately, the source of the concern is likely a
will interrupt the pilot signal and prevent the BCM
failed temperature sensor or its circuit.
from activating the onboard charger.
•
After the IOM has been unlatched, if the fault
In the event an over-temperature condition occurs
resets after the vehicle has been charging for
that does not include a rapid temperature rise,
some time, the source is likely a rapid rise in
charging will be interrupted but no DTC will be set.
temperature.
Charging will resume once the battery pack
NOTE: Using a scan tool to monitor the BCM
temperature returns to normal.
temperatures should allow the concern to be
If an IOM temperature sensor registers 49 degrees
verified.
Celsius (120 degrees Fahrenheit) or greater, an
NOTE: The vehicle will be unable to continue
over-temperature condition will be identified. The
charging if the IOM goes into a latched condition.
over-temperature condition will exist until the
Repair the source of the fault before resuming
lowest temperature sensor reading is at or below 45
traction battery charging.
degrees Celsius (113 degrees Fahrenheit).
NOTE: Most all concerns with the IOM are sensor
The BCM will suspend traction battery charging if
related.
any BCM temperature sensor exceeds 45 degrees
Emergency Power Off (EPO) / Interlock System
Celsius (113 degrees Fahrenheit). The BCM will
The Electric Ranger is equipped with a power off
allow charging to resume once the lowest BCM
system that operates in a manner similar to that of a
temperature sensor reading is at or below 42
gasoline powered vehicle. When the inertia switch is
degrees Celsius (108 degrees Fahrenheit).
triggered, the EPO is activated and the contactor
If the cause of the interruption is a rapid rise in
box will disable all vehicle power. The power reset
temperature or an open or shorted temperature
light will illuminate to indicate that this situation
sensor, a signal will be sent from the IOM to the
exists. The inertia switch must be reset before the
BCM indicating a fault condition. This will cause
contactor box will re-activate the vehicle power.
the BCM to store a DTC. The parameter for a
rapid rise in temperature is two degrees Celsius (3.6
Leakage Detection
degrees Fahrenheit) within six minutes at any IOM
The battery controller module (BCM) monitors
temperature sensor.
current leakage between traction battery positive and
negative terminals and the vehicle chassis. If the
•
An interruption of the pilot signal will be detected
leakage resistance drops below 50 k ohms, the
using the OPSTATE _PID referred to in the
BCM will request the interface adapter assembly
diagnostic procedures in this section.
(IAA) to illuminate the electrical hazard warning
•
If a DTC is sent in the BCM by the IOM because
light. The BCM monitors the leakage rate once
of a rapid rise in temperature or sensor fault, the
every 20 seconds to ensure safety against electrical
IOM will be latched.
hazards and to ensure that it is safe to charge the
vehicle.
•
Once latched, the IOM will prevent charging until
it is unlatched.
2001 Ranger EV, 01/2001