Ford Electric Ranger 2001 Manual page 668

414-03B-65
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC B2513 BLOWER (FAN) CIRCUIT FAILURE
A6 CHECK CIRCUIT 3851 (Y/R) FOR SHORT TO POWER
• 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 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.
• Connect BOB to BCM C1986, C1987 using the BCM/TIM BOB Adapter
Cable and Overlay; leave the BCM disconnected.
• With key OFF, disconnect flow-thru fan C1802.
• With key ON, measure the voltage between BOB pin B6 and ground
(BOB pin A33).
• Is the voltage greater than 10 volts?
A7 CHECK POWER TO FLOW-THRU FAN
• 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 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.
• With key OFF, disconnect flow-thru fan C1802.
• Enter BCM active command mode BCM PACKETED COMMANDS and
set active command FAN FL to ENABLE.
• Measure the voltage between pin 2 (O/LB wire) and pin 1 (BK wire) on
flow-thru fan C1802.
• Is the voltage greater than 10 volts?
A8 CHECK GROUND TO FLOW-THRU FAN
• With key OFF, measure the resistance between pin 1 (BK wire) on
flow-thru fan C1802 and ground (BCM case).
• Is the resistance less than 5 ohms?
A9 CHECK POWER TO FLOW-THRU FAN RELAY
• Disconnect flow-thru fan relay C1983 and measure the voltage between
pin 86 (Y/BK wire), pin 87 (Y/BK wire) on flow-thru fan relay C1983
and ground.
• Are the voltages greater than 10 volts?
A10 CHECK FLOW-THRU FAN RELAY
• Connect 12-volts to pin 86 and ground to pin 85 on the flow-thru fan
relay.
• Measure the resistance between pins 30 and 87 on the flow-thru fan
relay.
• Is the resistance less than 5 ohms?
A11 CHECK CIRCUITS 3850 (LG/P) AND 3395 (O/LB) FOR OPEN(S)
(Continued)
High Voltage/Traction Battery — Nickel Metal Hydride
TEST STEP
414-03B-65
ACTION TO TAKE
Yes = REPAIR the Y/R wire.
No = REPLACE the flow-thru
fan.
Yes = REPLACE the flow-thru
fan.
GO to A8.
No =
Yes = GO to A9.
No = REPAIR the BK wire.
GO to A10.
Yes =
No = REPAIR the Y/BK wire(s).
Yes = GO to A11.
No = REPLACE the flow-thru fan
relay.
2001 Ranger EV, 01/2001