Ford Electric Ranger 1998 Student Manual page 182

LESSON 5: DIAGNOSIS
5-18
•
The BCM strategy is to prevent charging if:
– There is a failure of the high voltage auxiliary bus current sensor
in the contactor box it will also prevent charging of the battery
pack.
– A battery module fails open.
– A battery module internally shorts, the increased resistance will
significantly reduce recharging capability.
– The inertia switch is tripped, or there is an inertia switch fault.
– Current leakage exists between the traction battery and chassis
ground that reduces resistance to less than 10K ohms.
– The vent fan is inoperative.
– More than three battery pack temperature sensors fail.
– The vehicle is not in Park, or the digital transmission range
(DTR) sensor has a fault that indicates that it is not in Park.
If any of the above strategies are implemented, the BCM should store
a DTC to indicate the cause of the no charge condition.
No DTC Charging Diagnosis
In some cases a fault in the AC power charging system will not result
in a DTC being stored in the BCM memory. In these cases, certain
procedures should be followed.
•
When diagnosing an "Unable to Charge" concern, (as with all
concerns), perform the preliminary diagnostic steps as described in
Section 100-07 of the Ranger EV workshop manual supplement.
•
As with all concerns where no DTC is present, refer to the
symptom-based diagnostic procedures in Section 100-09, or to the
symptom chart in the individual section of the workshop manual
that pertains to the component that has malfunctioned.
1998 Ranger EV New Model Training