Ford Electric Ranger 1998 Student Manual page 211

1998 Ranger EV New Model Training
•
Return the vehicle to the repair facility.
•
Actuate heater/defroster mode on high fan and leave on headlamps
to discharge battery pack.
•
When battery pack reaches 10% SOC, view BAT_MV PID for
each of the 39 battery modules.
•
Using the BAT_MV PID, record the battery voltage on the Battery
Voltage Record Sheet. (A copy is provided on the next page. There
is also a copy included as part of Worksheet L, and another copy
that can be found in the Diagnostic Information Appendix.)
•
Select the five lowest voltage battery modules.
•
Return to the BAT_MV PID and record the voltages of the five
lowest voltage battery modules.
•
From these five, compare the voltage readings of the lowest three
battery modules.
•
If the lowest voltage battery is 0.1 less than the second lowest
voltage battery, replace the lowest voltage battery module.
•
If the second lowest voltage battery is more than 0.08 volts less
than the third lowest voltage battery, replace the second lowest
voltage battery.
•
Prior to replacing the module, verify the serviceability of the
battery's sense lead (measure for resistance of 30.9 K ohms), and
verify the module's voltage reading with a DVOM.
LESSON 5: DIAGNOSIS
5-47