Ford Electric Ranger 2001 Manual page 647

414-03B-44
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1836 BATTERY TEMPERATURE OUT OF RANGE
A1 CHECK FOR BATTERY TEMPERATURE SENSOR OUT OF
RANGE FAULT
• With key ON, monitor battery control module (BCM) PIDs BATTMP1,
BATTMP2, BATTMP3, and BATTMP4.
• Do any of the BATTMP PIDs indicate YES?
A2 CHECK WIRES TO BATTERY TEMPERATURE SENSOR FOR
OPEN(S)
• 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 carrying out the following steps. Failure to
follow this warning may result in severe personal injury or death.
• Connect 104-Pin Breakout Box (BOB) to BCM C1986, C1987 using the
BCM/TIM BOB Adapter Cable and Overlay; leave the BCM
disconnected.
• Measure the resistance of the wires indicated below for the battery
temperature sensor in question.
Battery Temperature Sensor #1:
• With key OFF, disconnect battery temperature sensor #1 C1813 and
measure the resistance of the BR wire between BOB pin A40 and
temperature sensor #1 C1813.
• With key OFF, measure the resistance of the BR/W wire between BOB
pin A9 and temperature sensor #1 C1813.
Battery Temperature Sensor #2:
• With key OFF, disconnect battery temperature sensor #2 C1814 and
measure the resistance of the GY/BK wire between BOB pin A21 and
temperature sensor #2 C1814.
• With key OFF, measure the resistance of the DG wire between BOB pin
A22 and temperature sensor #2 C1814.
Battery Temperature Sensor #3:
• With key OFF, disconnect battery temperature sensor #3 C1815 and
measure the resistance of the LG/BK wire between BOB pin A24 and
temperature sensor #3 C1815.
• With key OFF, measure the resistance of the R/W wire between BOB
pin A25 and temperature sensor #3 C1815.
Battery Temperature Sensor #4:
• With key OFF, disconnect battery temperature sensor #4 C1816 and
measure the resistance of the BK/LB wire between BOB pin A26 and
temperature sensor #4 C1816.
• With key OFF, measure the resistance of the O/R wire between BOB pin
A27 and temperature sensor #4 C1816.
• Are the resistances less than 5 ohms?
A3 CHECK SIGNAL WIRE TO BATTERY TEMPERATURE SENSOR
FOR SHORT TO GROUND
• With key OFF, measure the resistance between the BOB pins indicated
below for the battery temperature sensor in question.
(Continued)
High Voltage/Traction Battery — Nickel Metal Hydride
TEST STEP
414-03B-44
ACTION TO TAKE
GO to A2.
Yes =
No = System OK. If DTC C1836
reoccurs intermittently, GO
to A6.
GO to A3.
Yes =
No = REPAIR the wire(s) in
question.
Yes = GO to A4.
2001 Ranger EV, 01/2001