Ford Electric Ranger 2001 Manual page 421

414-03A-18
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1862 CONTACTOR CIRCUIT FAILURE
• Connect Traction Battery High-Voltage Service Cord to traction battery
support tray in-line C1935F and in-line C1935M.
• Connect Traction Battery Low-Voltage Service Cord to traction battery
support tray in-line C1939F and in-line C1939M.
• Connect 104-Pin Breakout Box (BOB) to battery control module (BCM)
and BCM C1986, C1987 using BCM/TIM BOB Adapter Cable and
Overlay.
• Enter BCM active command mode CONTACTOR OUTPUT CONTROL,
set the active command NEG MAIN to OPEN, and measure the voltage
between BOB pin B7 and ground (BOB pin A33).
• Is the voltage greater than 10 volts?
A5 CHECK CIRCUIT 3136 (W) FOR SHORT TO GROUND
• With key OFF, disconnect BOB from BCM; leave BOB connected to
BCM C1986 and C1987.
• With key OFF, disconnect contactor box C1982 and measure the
resistance between BOB pin B7 and ground (BOB pin A33).
• Is the resistance greater than 10,000 ohms?
A6 CHECK CIRCUIT 3136 (W) FOR OPEN
• With key OFF, disconnect contactor box C1982 and measure the
resistance of the W wire between pin 3 on contactor box C1982 and
BOB pin B7.
• Is the resistance less than 5 ohms?
Emergency Power Off (EPO)/Interlock
System
Diagnostic Trouble Code (DTC) Definition
The following DTC relates to the Emergency Power
Off (EPO)/Interlock System:
• DTC B2517 Emergency Power Off System
Faulted
— An emergency power off (EPO) occurs when
the contactor box outputs an EPO signal
through the EPO circuit to the battery control
module (BCM), interface adapter assembly
(IAA) module and positive temperature
coefficient (PTC) switching module. If an
EPO condition occurs, the contactor box
disables the high-voltage system and the IAA
module sets DTC B2517. An open
high-voltage connector interlock, an EPO
request from the BCM and an activated inertia
switch will cause an EPO condition. The IAA
module will not set DTC B2517 if the inertia
switch is activated. If the inertia switch is
activated, the power reset indicator will
illuminate.
High Voltage/Traction Battery
TEST STEP ACTION TO TAKE
No =
Yes =
No =
Yes =
No =
Electrical Schematic
Refer to Electrical and Vacuum Troubleshooting
Manual, Cell 20, Emergency Power Off
(EPO)/Interlock System for schematic and connector
information.
Inspection and Verification
Refer to Section 100-07.
414-03A-18
GO to A5.
REPLACE the BCM.
REPAIR the W wire.
REPLACE the contactor
box.
REPAIR the W wire.
2001 Ranger EV, 01/2001