Ford Electric Ranger 2001 Manual page 452

414-03A-49
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1836 BATTERY TEMPERATURE OUT OF RANGE
• Connect Traction Battery Low-Voltage Service Cord to traction battery
support tray in-line C1939F and in-line C1939M.
• Connect Traction Battery High-Voltage Service Cord to traction battery
support tray in-line C1935F and in-line C1935M.
• Clear the BCM DTCs.
• With key ON, monitor BCM PID BATTMP for the battery temperature
sensor in question.
• Exercise (wiggle) the wiring harness to the battery temperature sensor.
• Does the BATTMP PID indicate YES?
PINPOINT TEST B: DTC C1837 BATTERY HEATER CIRCUIT FAILURE
B1 CHECK FOR CHARGING SYSTEM FAULT
NOTE: Clear the diagnostic trouble codes (DTCs) from the battery control
module (BCM) continuous memory before connecting the vehicle to a
power control station (PCS). The vehicle may need to be left on charge for
up to five minutes to set a charging system fault (DTC C1838).
• Connect the vehicle to the PCS and press the START button to begin
charging.
• Wait approximately five minutes and retrieve continuous DTCs from the
BCM.
• Does DTC C1838 Charging System Fault occur?
B2 CHECK STATUS OF AUXILIARY CURRENT
NOTE: The amperage for the AUX CNT PID should increase by more
than 0.8 amps when each battery heater is enabled.
• Enter BCM active command mode BCM PACKETED COMMAND,
monitor BCM PID AUX CNT, and set the active commands below in
the indicated order:
1. Set CHARGER C to CLOSE.
2. Set CURRENT S to ENABLE.
3. Set BAT HTR 1 to ENABLE.
4. Set BAT HTR 2 to ENABLE.
• Does the amperage for the AUX CNT PID stay the same when
BAT HTR 1 and BAT HTR 2 are enabled?
B3 CHECK CIRCUIT 57 (BK) TO BATTERY HEATERS FOR OPEN
• Remove the traction battery and connect Traction Battery High-Voltage
Lockout and Diagnostic Tool to the traction battery high-voltage two-pin
C3994M.
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.
• Disconnect contactor box C1864 and measure the resistance between pin
B (BK wire) and pin C (R wire) on contactor box C1864.
• Is the resistance between 330 and 390 ohms?
(Continued)
High Voltage/Traction Battery
TEST STEP
TEST STEP
414-03A-49
ACTION TO TAKE
No = System OK. If DTC C1836
keeps occurring, REPLACE
the BCM.
ACTION TO TAKE
Yes = REFER to Symptom Chart.
No = DISCONNECT PCS from
vehicle. GO to B2.
GO to B3.
Yes =
No = If the amperage increases
for BAT HTR 2, but not for
BAT HTR 1, GO to B5.
If the amperage increases
for BAT HTR 1, but not for
BAT HTR 2, GO to B10.
Yes = GO to B4.
No = REPLACE high-voltage
harness (10B700).
2001 Ranger EV, 01/2001