Ford Electric Ranger 2001 Manual page 438

414-03A-35
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1839 LEAKAGE FAULT
• With key ON, monitor BCM PIDs LKRESB+ and LKRESB-.
• Wait approximately 50 seconds.
• Does the LKRESB+ or LKRESB- PID indicate less than 50,000
ohms?
A38 CHECK FOR CURRENT LEAKAGE IN TIM OR
HIGH-VOLTAGE CABLES LEADING TO TIM
• With key OFF, check the high-voltage cables to the TIM to see if the
positive (+) or negative (-) cables are touching chassis ground.
• Are any of the cables touching chassis ground?
A39 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.
• Connect Auxiliary Interlock Tool to the high-voltage auxiliary load
in-line C1935 on the traction battery support tray and in-line interlock
C1948 (located behind the high voltage power distribution box ).
• With key OFF, disconnect contactor box C1864.
• With key ON, monitor BCM PIDs LKRESB+ and LKRESB-.
• Wait approximately 50 seconds.
• Does the LKRESB+ or LKRESB- PID indicate less than 50,000
ohms?
A40 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 PIDs LKRESB+ and LKRESB-.
• Wait approximately 50 seconds.
• Does the LKRESB+ or LKRESB- PID indicate less than 50,000
ohms?
A41 CHECK FOR CURRENT LEAKAGE IN UPPER BATTERY
HEATER
• With key OFF, disconnect upper battery heater C1859 and C1861.
• With key ON, monitor BCM PIDs LKRESB+ and LKRESB-.
• Wait approximately 50 seconds.
• Does the LKRESB+ or LKRESB- PID indicate less than 50,000
ohms?
A42 CHECK FOR CURRENT LEAKAGE IN POWER STEERING
ASSEMBLY
• With key OFF, reconnect high-voltage auxiliary load in-line C1935 to the Yes =
traction battery support tray.
(Continued)
High Voltage/Traction Battery
TEST STEP
414-03A-35
ACTION TO TAKE
No = REPLACE the
motor/transaxle. REFER to
Section 303-01.
Yes = REPLACE high-voltage
harness (14B322).
No = REPLACE the TIM. REFER
to Section 303-14.
Yes = REPLACE the contactor
box.
No = GO to A40 (leakage is in
battery heater harness).
GO to A41.
Yes =
No = REPLACE the lower battery
heater.
Yes = REPLACE high-voltage
harness (10B700).
No = REPLACE the upper battery
heater.
GO to A43.
2001 Ranger EV, 01/2001