Ford Electric Ranger 2001 Manual page 436

414-03A-33
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1839 LEAKAGE FAULT
NOTE: If there is no continuity between the indicated battery module and
chassis ground, check for continuity between chassis ground and the
positive (+) posts of the two battery modules before and after the indicated
battery module.
• With key OFF, disconnect BCM C1865 and C1866, and check for
continuity between the positive (+) post of the indicated battery module
and chassis ground.
• Is there continuity?
A29 CHECK FOR CURRENT LEAKAGE IN CONTACTOR BOX OR
BATTERY HEATER HARNESS (IF EQUIPPED)
NOTE: If vehicle is not equipped with traction battery heaters, REPLACE
the 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 Low-Voltage Service Cord to traction battery
support tray in-line C1939F and 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 performing the following steps. Failure to
follow this warning may result in severe personal injury or death.
• With key OFF, disconnect contactor box C1864.
• With key ON, monitor BCM PID LEAKRES.
• Wait approximately 50 seconds.
• Does the LEAKRES PID indicate less than 50,000 ohms?
A30 CHECK FOR CURRENT LEAKAGE IN LOWER BATTERY
HEATER
• With key OFF, reconnect contactor box C1864 and disconnect lower
battery heater C1862 and C1863.
• With key ON, monitor BCM PID LEAKRES.
• Wait approximately 50 seconds.
• Does the LEAKRES PID indicate less than 50,000 ohms?
A31 CHECK FOR CURRENT LEAKAGE IN UPPER BATTERY
HEATER
• With key OFF, disconnect upper battery heater C1859 and C1861.
• With key ON, monitor BCM PID LEAKRES.
• Wait approximately 50 seconds.
• Does the LEAKRES PID indicate less than 50,000 ohms?
A32 CHECK FOR CURRENT LEAKAGE IN HIGH-VOLTAGE
NEGATIVE BUS (TB-) (INSIDE TRACTION BATTERY SUPPORT
TRAY)
NOTE: The BCM active command CHARGER must be sent before the
BCM active command NEG MAIN is sent.
• With key ON, enter BCM active command mode CONTACTOR
OUTPUT CONTROL, monitor BCM PID LKRESB-, and set the active
command CHARGER to CLOSE.
• Set the active command NEG MAIN to OPEN.
• Wait approximately 50 seconds.
• Does the LKRESB- PID indicate less than 50,000 ohms?
A33 CHECK FOR CURRENT LEAKAGE IN BATTERY MODULE
VOLTAGE SENSE LINES
(Continued)
High Voltage/Traction Battery
TEST STEP
414-03A-33
ACTION TO TAKE
No = REPLACE the contactor
box.
Yes = REPLACE the contactor
box.
GO to A30 (leakage is in
No =
battery heater harness).
Yes = GO to A31.
No = REPLACE the lower battery
heater.
Yes = REPLACE high-voltage
harness (10B700).
No = REPLACE the upper battery
heater.
GO to A33 (leakage is in
Yes =
contactor box or battery
module voltage sense lines).
GO to A35.
No =
2001 Ranger EV, 01/2001