Ford Electric Ranger 2001 Manual page 89

100-09-35
DIAGNOSIS AND TESTING (Continued)
ROUTINE 9: VEHICLE DOES NOT CHARGE (NIMH VEHICLES)
9-23 CHECK CIRCUITS 3002 (O/LB) AND 3990 (LB/R) (OUTSIDE OF
TRACTION BATTERY SUPPORT TRAY) FOR OPEN(S)
• 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, disconnect traction battery charger C1991 and C1993.
• With key OFF, measure the resistance of the O/LB wire between pin 4
on traction battery charger C1991 and BOB pin 61.
• With key OFF, measure the resistance of the LB/R wire between pin 2
on traction battery charger C1993 and BOB pin 28.
• Are the resistances less than 5 ohms?
9-24 CHECK CIRCUITS 3002 (O/LB) AND 3990 (LB/R) (OUTSIDE OF
TRACTION BATTERY SUPPORT TRAY) FOR SHORT(S) TO
GROUND
• With key OFF, measure the resistance between BOB pins 28, 61 and
ground (BOB pin 65).
• Are the resistances greater than 10,000 ohms?
9-25 CHECK CIRCUITS 3002 (O/LB) AND 3990 (LB/R) (INSIDE OF
TRACTION BATTERY SUPPORT TRAY) FOR OPEN
• Disconnect 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.
• Connect 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.
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.
• With key OFF, disconnect BCM C1986 and C1987.
• Measure the resistance of the O/LB wire between pin 5 on BCM C1987
and BOB pin 61.
• Measure the resistance of the LB/R wire between pin 35 on BCM C1986
and BOB pin 28.
• Are the resistances less than 5 ohms?
9-26 CHECK CIRCUITS 3002 (O/LB) AND 3990 (LB/R) (INSIDE OF
TRACTION BATTERY SUPPORT TRAY) FOR SHORT(S) TO
GROUND
• With key OFF, measure the resistance between BOB pins 28, 61 and
ground (BOB pin 65).
• Are the resistances greater than 10,000 ohms?
9-27 VERIFY POWER CONTROL STATION (PCS) OPERATION
• Carry out the Power Control Station (PCS) Operation Verification Test.
Refer to Traction Battery Charging/Heating System in
• Is the PCS OK?
(Continued)
Powertrain Diagnostic Routines Identification
TEST STEP
No =
Yes =
No =
Yes =
No =
Yes =
No =
Yes =
Section 414-03B.
No =
100-09-35
ACTION TO TAKE
GO to 9-24.
REPAIR the wire(s) in
question.
GO to 9-25.
REPAIR the wire(s) in
question.
GO to 9-26.
REPAIR the wire(s) in
question.
REPLACE the traction
battery charger. REFER to
Section 414-03B.
REPAIR the wire(s) in
question.
GO to 9-28.
CARRY OUT the required
action as indicated in the
Power Control Station (PCS)
Operation Verification Test.
2001 Ranger EV, 01/2001