Ford Electric Ranger 1998 Student Manual page 179

12. View the PID activity in the table mode. Press REW. How many seconds before you pressed the trigger is
data available? __________________________________________________________________________
______________________________________________________________________________________
13. Press PLAY. How many seconds after you pressed the trigger is data available? ______________________
______________________________________________________________________________________
14. Press CANCEL to exit the table mode. Enter the graph mode. How many PIDs can you view at the same
time? _________________________________________________________________________________
______________________________________________________________________________________
15. On the right and left sides there are numbers. What do these numbers indicate? _______________________
______________________________________________________________________________________
16. What NGS button do you press to move the graph forward? ______________________________________
______________________________________________________________________________________
What button do you press to move the graph backward? _________________________________________
______________________________________________________________________________________
17. Looking at these PIDs, do these sensors appear to be functioning normally? _________________________
______________________________________________________________________________________
18. In the workshop manual, refer to Negative Contactor Relay Control Pinpoint Test step A2 in Section 414-
03. Perform the test procedure described. What occurs to the voltage displayed? ______________________
______________________________________________________________________________________
19. What would it indicate if this PID indicated greater than 200 volts? ________________________________
______________________________________________________________________________________
IRQ
: Explain that if voltage is not falling, main and negative contactors are stuck closed. Stuck contactors can
cause the vehicle not to recharge. This could cause a safety concern if you are disconnecting the traction battery
HV 2-pin connector C3994, because high voltage would be present at the connector. Whenever this connector is
open use the traction battery high voltage lockout and diagnostic tool.
20. While in the TIM active command mode select the following PIDs: BAT_PV, TPCCO, and TPMCO. Press
START. Highlight PRECHG IN and command it to close. What occurs to the BAT_PV and TPCCO PID?
______________________________________________________________________________________
______________________________________________________________________________________
1998 Ranger EV New Model Training
ACTIVITY 5 – DIAGNOSIS – WORKSHEET K
NGS OPERATION AND IMPROPERLY CLOSED
CONTACTOR RELAY DIAGNOSIS
STUDENT ANSWER SHEET (Continued)
LESSON 5: DIAGNOSIS
5-15