Ford Electric Ranger 2001 Manual page 644

414-03B-41
DIAGNOSIS AND TESTING (Continued)
• DTC C1838 Charging System Fault
— The battery control module (BCM) sets DTC
C1838 when a failure occurs in the traction
battery charging system. The BCM uses PIDs
to indicate the charging system failure that
occurred. The possible failures are:
— A charger charging after being disabled fault
occurs if the charger charging signal or the
auxiliary current sensor indicates that the
charger is still outputting significant current
several seconds after the BCM has
commanded the charger off.
— A charger overtemperature fault occurs if the
charger fault signal is asserted and the charger
ready signal is deasserted during a charge
cycle.
— A charger latchup fault occurs if the charger
fault signal and charger ready signal are
asserted during a charge cycle.
— A charger cycling fault occurs if the charger is
cycled on and off several times within a short
period of time due to a reoccurring fault
condition. If this occurs, the BCM disables the
charger.
— A charger undercurrent fault occurs if the
BCM commands maximum power output from
the charger and little or no current is detected
at the auxiliary current sensor for an extended
period of time. There are several potential
causes for this fault.
— A charger overcurrent fault occurs if the BCM
commands zero power output from the charger
and significant current is detected at the
auxiliary current sensor for an extended period
of time.
— A charger overvoltage fault occurs if the BCM
detects the traction battery voltage to be
greater than 385 volts during a charge cycle.
If this occurs, the BCM disables the charger.
— A charger over amp-hours fault occurs the
BCM detects that more than 105 amp-hours of
current have been put into the traction battery
during the charge cycle. If this occurs, the
BCM disables the charger.
— A charger line capacity fault occurs if the
BCM commands maximum power output from
the charger and little or no current is detected
at the auxiliary current sensor for an extended
period of time and the charger line capacity
High Voltage/Traction Battery — Nickel Metal Hydride
signal indicates zero.
— A charger mode fault occurs if the BCM
detects the charger mode signal is not being
pulled up to auxiliary battery voltage by the
charger. If this occurs, the BCM does not
enable the charger.
— An independent observer module (IOM) to
BCM diagnostic signal stuck low fault occurs
when the IOM to BCM diagnostic input is
shorted to ground or if the BCM to IOM
diagnostic output is open.
— An independent observer module (IOM) to
BCM diagnostic signal stuck high fault occurs
if any of the following occur: IOM is
disconnected, the IOM to BCM diagnostic
input is open, the BCM to IOM diagnostic
output is shorted to ground, or there is an
IOM diagnostic fault due to an IOM battery
temperature sensor is out of range or the IOM
has detected a high/rapid change in battery
temperature.
• DTC C1859 PRNDL Input #2 Circuit Failure
— The battery control module (BCM) sets DTC
C1859 during the BCM on-demand self test if
it detects the PRNDE TR2 signal is not
grounded. An open or short in the TR2 signal
wire or the gear selector not in the PARK
position during the on-demand self-test will
cause DTC C1859.
• DTC C1861 PRNDL Input #4 Circuit Failure
— The battery control module (BCM) sets DTC
C1861 during the BCM on-demand self test if
it detects the PRNDE TR4 signal is not
grounded. An open or short in the TR4 signal
wire or the gear selector not in the PARK
position during the on-demand self-test will
cause DTC C1861.
• DTC C1863 External Charging Fault
— The battery control module (BCM) sets DTC
C1863 if the on-plug circuit indicates the
vehicle is plugged into a power control station
(PCS) and the traction inverter module (TIM)
indicates the vehicle is traveling faster than 15
km/h (9.4 mph).
Electrical Schematic
Refer to Electrical and Vacuum Troubleshooting
Manual, Cell 18, Traction Battery Charging/Heating
System for schematic and connector information.
414-03B-41
2001 Ranger EV, 01/2001