Ford Electric Ranger 2001 Manual page 423

414-03A-20
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC B2517 EMERGENCY POWER OFF SYSTEM FAULTED
• With key OFF, disconnect traction battery support tray in-line C1939 and No =
connect BOB to traction battery support tray in-line C1939F and in-line
C1939M using Traction Battery Low-Voltage Service Cord.
• With key ON, measure the voltage between BOB pin 19 and ground
(BOB pin 65).
• Is the voltage greater than 10 volts?
A5 CHECK TRACTION INVERTER MODULE (TIM) EMERGENCY
POWER OFF (EPO) STATUS
• With key ON, monitor TIM PID EMG PO.
• Does the EMG PO PID indicate ENABLE?
A6 CHECK POWER TO IN-LINE C1948
• With key OFF, disconnect two-pin in-line C1948 (located behind the
high-voltage power distribution box ) and measure the voltage between
the O wire on in-line C1948F and ground.
• Is the voltage greater than 10 volts?
A7 CHECK POWER TO INERTIA SWITCH
• With key OFF, disconnect inertia switch C249 and measure the voltage
between the LB/W wire on inertia switch C249 and ground.
• Is the voltage greater than 10 volts?
A8 CHECK INERTIA SWITCH
• Measure the resistance between the LB/W wire terminal and O wire
terminal on the inertia switch with the inertia switch in the deactivated
(depressed) position.
• Is the resistance less than 5 ohms?
A9 CHECK POWER TO TRACTION BATTERY SUPPORT TRAY
• With key OFF, disconnect high-voltage auxiliary load in-line C1935 on
the traction battery support tray and measure the voltage between the R
wire on in-line C1935M and ground.
• Is the voltage greater than 10 volts?
A10 CHECK POWER TO POWER STEERING ASSEMBLY
• With key OFF, disconnect power steering assembly high-voltage C1895
and measure the voltage between the DG wire on power steering
assembly C1895 and ground.
• Is the voltage greater than 10 volts?
A11 CHECK POWER STEERING ASSEMBLY INTERLOCK JUMPER
• With key OFF, measure the resistance between the DG wire terminal and Yes =
R wire terminal on the power steering assembly.
• Is the resistance less than 5 ohms?
A12 CHECK POWER TO CONTACTOR BOX
• Remove the traction battery and connect Traction Battery High-Voltage
Lockout and Diagnostic Tool to the traction battery high-voltage two-pin
C3994M.
• Connect Traction Battery High-Voltage Service Cord to high-voltage
auxiliary load in-line C1935F on the traction battery support tray and
in-line C1935M.
(Continued)
High Voltage/Traction Battery
TEST STEP
414-03A-20
ACTION TO TAKE
REMOVE the traction
battery and REPAIR circuit
3006 (P/LG wire) between
the contactor box and
traction battery support tray
in-line C1939F.
Yes = GO to A13.
GO to A6.
No =
Yes = RECONNECT in-line
C1948. GO to A9.
GO to A7.
No =
GO to A8.
Yes =
No = REPAIR the LB/W wire.
Yes = REPAIR the O wire
between the inertia switch
and in-line C1948F.
No = REPLACE the inertia
switch.
GO to A12.
Yes =
GO to A10.
No =
Yes = GO to A11.
No = REPLACE the HVPDB.
REPLACE the HVPDB.
No = REPLACE the power
steering assembly.
Yes = REPLACE the contactor
box.
No = REPAIR the R wire between
the contactor box and in-line
C1935F.
2001 Ranger EV, 01/2001