Ford 2001 Ranger, Manual

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414-03A-30 414-03A-30 High Voltage/Traction Battery
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1839 LEAKAGE FAULT
TEST STEP ACTION TO TAKE
•
Turn the ignition key to the START position, set the gear selector lever No = If vehicle is equipped with
to the drive (D) position, and monitor BCM PID LEAKRES. A/C, GO to A12 . If not,
•
Wait approximately 50 seconds. CLEAR the BCM DTCs.
•
Does the LEAKRES PID indicate less than 50,000 ohms?
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.
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) Yes = GO to A13.
position.
•
With key ON, set the mode select knob to the A/C position, the No = CLEAR the BCM DTCs.
temperature control knob to the full cool position, and the blower control DRIVE the vehicle. If the
knob to the high speed position, and monitor BCM PID LEAKRES. electrical hazard warning
•
Wait approximately 50 seconds. indicator illuminates and
•
Does the LEAKRES PID indicate less than 50,000 ohms?
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.
A13 CHECK FOR CURRENT LEAKAGE IN A/C COMPRESSOR
•
With key OFF, disconnect A/C inverter motor controller (IMC) Yes = REPLACE A/C IMC.
high-voltage C1902 (to A/C compressor). REFER to Section 412-03.
•
With key ON, monitor BCM PID LEAKRES. No = REPLACE the A/C
•
Wait approximately 50 seconds. compressor. REFER to
•
Does the LEAKRES PID indicate less than 50,000 ohms?
Section 412-03.
A14 CHECK FOR CURRENT LEAKAGE IN TIM OR TRACTION
MOTOR
•
With key OFF, disconnect the traction motor three-phase cables from the Yes = GO to A15 (leakage is in
TIM, and reconnect the traction battery high-voltage two-pin C3994. TIM or high-voltage cables
to TIM).
•
With key ON, monitor BCM PID LEAKRES. No = REPLACE the
•
Wait approximately 50 seconds. motor/transaxle. REFER to
•
Does the LEAKRES PID indicate less than 50,000 ohms?
Section 303-01.
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 Yes = REPLACE high-voltage
positive (+) or negative (-) cables are touching chassis ground. harness (14B322).
•
Are any of the cables touching chassis ground?
No = REPLACE the TIM. REFER
to Section 303-14.
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)
2001 Ranger EV, 01/2001