Ford Electric Ranger 2001 Manual page 657

414-03B-54
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST N: CHARGER MODE FEEDBACK FAULT
• With key OFF, disconnect traction battery support tray in-line C1939 and Yes =
connect 104-Pin Breakout Box (BOB) to in-line C1939M using Traction
Battery Low-Voltage Service Cord; do not connect Traction Battery
Low-Voltage Service Cord to in-line C1939F.
• With key OFF, measure the resistance of the W wire between pin 1 on
traction battery charger C1993 and BOB pin 38.
• Is the resistance less than 5 ohms?
N4 CHECK CIRCUIT 3826 (W) (OUTSIDE OF TRACTION BATTERY
SUPPORT TRAY) FOR SHORT TO GROUND
• With key OFF, measure the resistance between BOB pin 38 and ground
(BOB pin 65).
• Is the resistance greater than 10,000 ohms?
N5 CHECK CIRCUIT 3826 (W) (INSIDE OF TRACTION BATTERY
SUPPORT TRAY) FOR OPEN
• Disconnect the BOB from in-line C1939M, remove the traction battery,
and connect Traction Battery High-Voltage Lockout and Diagnostic Tool
to the traction battery high-voltage two-pin C3994M.
WARNING: The traction battery contains high-voltage
components and wiring. High-voltage insulated safety gloves and face
shield must be worn when carrying out the following steps. Failure to
follow this warning may result in severe personal injury or death.
• Connect 104-Pin Breakout Box (BOB) to traction battery support tray
in-line C1939F using Traction Battery Low-Voltage Service Cord; do not
connect Traction Battery Low-Voltage Service Cord to in-line C1939M.
• With key OFF, disconnect BCM C1986 and measure the resistance of the
W wire between pin 5 on BCM C1986 and BOB pin 38.
• Is the resistance less than 5 ohms?
N6 CHECK CIRCUIT 3826 (W) (INSIDE OF TRACTION BATTERY
SUPPORT TRAY) FOR SHORT TO GROUND
• With key OFF, measure the resistance between BOB pin 38 and ground
(BOB pin 65).
• Is the resistance greater than 10,000 ohms?
N7 CHECK CIRCUIT 3992 (BR/Y) (OUTSIDE OF TRACTION
BATTERY SUPPORT TRAY) FOR OPEN
• With key OFF, disconnect traction battery support tray in-line C1939 and Yes =
connect 104-Pin Breakout Box (BOB) to in-line C1939M using Traction
Battery Low-Voltage Service Cord; do not connect Traction Battery
Low-Voltage Service Cord to in-line C1939F.
• With key OFF, measure the resistance of the BR/Y wire between pin 8
on traction battery charger C1993 and BOB pin 49.
• Is the resistance less than 5 ohms?
N8 CHECK CIRCUIT 3992 (BR/Y) (OUTSIDE OF TRACTION
BATTERY SUPPORT TRAY) FOR SHORT TO GROUND
• With key OFF, measure the resistance between BOB pin 49 and ground
(BOB pin 65).
• Is the resistance greater than 10,000 ohms?
N9 CHECK CIRCUIT 3992 (BR/Y) (INSIDE OF TRACTION
BATTERY SUPPORT TRAY) FOR OPEN
• Disconnect the BOB from in-line C1939M, remove the traction battery,
and connect Traction Battery High-Voltage Lockout and Diagnostic Tool
to the traction battery high-voltage two-pin C3994M.
(Continued)
High Voltage/Traction Battery — Nickel Metal Hydride
TEST STEP
414-03B-54
ACTION TO TAKE
GO to N4.
No = REPAIR the W wire.
GO to N5.
Yes =
No = REPAIR the W wire.
GO to N6.
Yes =
No = REPAIR the W wire.
Yes = REPLACE the BCM.
No = REPAIR the W wire.
GO to N8.
No = REPAIR the BR/Y wire.
GO to N9.
Yes =
No = REPAIR the BR/Y wire.
GO to N10.
Yes =
2001 Ranger EV, 01/2001