Ford Electric Ranger 2001 Manual page 470

414-03A-67
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC B2513 BLOWER (FAN) CIRCUIT FAILURE
• Measure the resistance between pins 30 and 87 on the traction battery
cooling fan relay.
• Is the resistance less than 5 ohms?
A8 CHECK CIRCUITS 3850 (LG/P) AND 3397 (W/R) FOR OPEN(S)
• With key OFF, measure the resistance of the LG/P wire between pin 85
on traction battery cooling fan relay C1983 and BOB pin B23.
• With key OFF, measure the resistance of the W/R wire between pin 30
on traction battery cooling fan relay C1983 and pin E on traction battery
cooling fan C1984.
• Are the resistances less than 5 ohms?
A9 CHECK CIRCUIT 3395 (O/LB) FOR OPEN
• With key OFF, measure the resistance of the O/LB wire between pin A
on traction battery cooling fan C1984 and BOB pin A32.
• Is the resistance less than 5 ohms?
A10 CHECK CIRCUIT 3395 (O/LB) FOR SHORT TO GROUND
• With key OFF, measure the resistance between BOB pin A32 and ground Yes =
(BOB pin A33).
• Is the resistance greater than 10,000 ohms?
A11 CHECK BCM CONTROL SIGNAL TO TRACTION BATTERY
COOLING FAN
• With key OFF, connect BCM to BOB; leave BOB connected to BCM
C1986, C1987.
• Enter BCM active command mode FAN SPEED CONTROL, set active
command FAN SPEED to 50%, and measure the frequency between pin
A (O/LB wire) on traction battery cooling fan C1984 and ground.
• Is the frequency greater than 1,800 Hz?
A12 CHECK FAN FEEDBACK SIGNAL TO BCM
• 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.
• Connect Traction Battery High-Voltage Service Cord to traction battery
support tray in-line C1935F and in-line C1935M.
• Connect Traction Battery Low-Voltage Service Cord to traction battery
support tray in-line C1939F and in-line C1939M.
• Connect 104-Pin Breakout Box (BOB) to the BCM and BCM C1986,
C1987 using the BCM/TIM BOB Adapter Cable and Overlay.
• Enter BCM active command mode FAN SPEED CONTROL, set active
command FAN SPEED to 50%, and measure the frequency between
BOB pin A28 and ground (BOB pin A33).
• Is the frequency greater than 50 Hz?
A13 CHECK CIRCUIT 3396 (Y/LG) FOR OPEN
• With key OFF, measure the resistance of the Y/LG wire between pin D
on traction battery cooling fan C1984 and BOB pin A28.
• Is the resistance less than 5 ohms?
A14 CHECK CIRCUIT 3396 (Y/LG) FOR SHORT TO GROUND
(Continued)
High Voltage/Traction Battery
TEST STEP
414-03A-67
ACTION TO TAKE
No = REPLACE the traction
battery cooling fan relay.
Yes = REPLACE the BCM.
No = REPAIR the wire(s) in
question.
GO to A10.
Yes =
No = REPAIR the O/LB wire.
GO to A11.
No = REPAIR the O/LB wire.
Yes = REPLACE the traction
battery cooling fan.
No = REPLACE the BCM.
Yes = REPLACE the BCM.
GO to A13.
No =
GO to A14.
Yes =
No = REPAIR the Y/LG wire.
2001 Ranger EV, 01/2001