Ford Electric Ranger 2001 Manual page 632

414-03B-29
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1839 LEAKAGE FAULT
• Turn the ignition key to the START position, set the gear selector lever
to the Drive (D) position, and monitor BCM PID LEAKRES.
• Wait approximately 50 seconds.
• Does the LEAKRES PID indicate less than 50,000 ohms?
A12 CHECK FOR CURRENT LEAKAGE IN A/C INVERTER MOTOR
CONTROLLER (IMC) OR A/C COMPRESSOR
• Depress the brake pedal and set the gear selector lever to the Park (P)
position.
• With key ON, set the mode select knob to the A/C position, the
temperature control knob to the full cool position, and the blower control
knob to the high speed position, and monitor BCM PID LEAKRES.
• Wait approximately 50 seconds.
• Does the LEAKRES PID indicate less than 50,000 ohms?
A13 CHECK FOR CURRENT LEAKAGE IN A/C COMPRESSOR
• With key OFF, disconnect A/C inverter motor controller (IMC)
high-voltage C1902 (to A/C compressor).
• With key ON, monitor BCM PID LEAKRES.
• Wait approximately 50 seconds.
• Does the LEAKRES PID indicate less than 50,000 ohms?
A14 CHECK FOR CURRENT LEAKAGE IN TIM OR TRACTION
MOTOR
• With key OFF, disconnect the traction motor three-phase cables from the
TIM, and reconnect the traction battery high-voltage two-pin C3994.
• With key ON, monitor BCM PID LEAKRES.
• Wait approximately 50 seconds.
• Does the LEAKRES PID indicate less than 50,000 ohms?
A15 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?
A16 CHECK FOR CURRENT LEAKAGE IN TRACTION BATTERY
SUPPORT TRAY, TRACTION INVERTER MODULE (TIM),
MOTOR/TRANSAXLE, OR IN THE AUXILIARY NEGATIVE BUS
FOR THE HIGH-VOLTAGE AUXILIARY LOAD COMPONENTS
(Continued)
High Voltage/Traction Battery — Nickel Metal Hydride
TEST STEP
414-03B-29
ACTION TO TAKE
No = If vehicle is equipped with
A/C, GO to A12 . If not,
CLEAR the BCM DTCs.
DRIVE the vehicle. If the
electrical hazard warning
indicator illuminates and
DTC C1839 still occurs,
REPEAT test steps A1 and
A2. If all PIDs still indicate
NO, CHECK the traction
battery support tray for
excessive moisture or water
build-up. If OK, REPLACE
the BCM.
GO to A13.
Yes =
No = CLEAR the BCM DTCs.
DRIVE the vehicle. If the
electrical hazard warning
indicator illuminates and
DTC C1839 still occurs,
REPEAT test steps A1 and
A2. If all PIDs still indicate
NO, CHECK the traction
battery support tray for
excessive moisture or water
build-up. If OK, REPLACE
the BCM.
Yes = REPLACE A/C IMC.
REFER to Section 412-03.
No = REPLACE the A/C
compressor. REFER to
Section 412-03.
Yes = GO to A15 (leakage is in
TIM or high-voltage cables
to TIM).
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.
2001 Ranger EV, 01/2001