Ford 2001 Ranger, Manual

Page: 669 / 1218

414-03B-66 414-03B-66 High Voltage/Traction Battery — Nickel Metal Hydride
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC B2513 BLOWER (FAN) CIRCUIT FAILURE
TEST STEP ACTION TO TAKE
•
Connect BOB to BCM C1986, C1987 using the BCM/TIM BOB Adapter Yes = REPLACE the BCM.
Cable and Overlay; leave the BCM disconnected.
•
With key OFF, measure the resistance of the LG/P wire between pin 85 No = REPAIR the wire(s) in
on flow-thru fan relay C1983 and BOB pin B23. question.
•
With key OFF, measure the resistance of the O/LB wire between pin 30
on flow-thru fan relay C1983 and pin 2 on flow-thru fan C1802.
•
Are the resistances less than 5 ohms?
A12 CHECK FAN FEEDBACK SIGNAL TO BCM
•
Remove the traction battery and connect Traction Battery High-Voltage Yes = System OK. CHECK wiring
Lockout and Diagnostic Tool to the traction battery high-voltage two-pin for intermittent connections.
C3994M.
No = If voltage is less than 1 volt,
WARNING: The traction battery contains high-voltage
GO to A13.
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 If voltage is greater than 4
support tray in-line C1935F and in-line C1935M. volts, REPLACE the BCM.
•
Connect BOB to BCM and BCM C1986, C1987 using the BCM/TIM
BOB Adapter Cable and Overlay.
•
Enter BCM active command mode BCM PACKETED COMMANDS, set
active command FAN FL to ENABLE, and measure the voltage
between BOB pin B6 and ground (BOB pin A33).
•
Is the voltage between 2.75 and 3.75 volts?
A13 CHECK CIRCUIT 3851 (Y/R) FOR OPEN
•
With key OFF, measure the resistance of the Y/R wire between pin 3 on Yes = GO to A14.
flow-thru fan C1802 and BOB pin B6.
•
Is the resistance less than 5 ohms?
No = REPAIR the Y/R wire.
A14 CHECK CIRCUIT 3851 (Y/R) FOR SHORT TO GROUND
•
With key OFF, disconnect BOB from BCM; leave BOB connected to Yes = REPLACE the flow-thru
BCM C1986, C1987. fan.
•
With key OFF, measure the resistance between BOB pin B6 and ground No = REPAIR the Y/R wire.
(BOB pin A33).
•
Is the resistance greater than 10,000 ohms?
A15 CHECK RECIRCULATION FAN POWER STATUS
NOTE: If an emergency power off (EPO) condition occurs, the fan power
Yes = GO to A16.
will be disabled. If interface adapter assembly (IAA) module DTC B2517
Emergency Power Off System Faulted occurred, carry out the appropriate
diagnostic procedures before carrying out this test step. Refer to the IAA
Module DTC Index in Section 100-07.
•
Enter BCM active command mode BCM PACKETED COMMANDS,
monitor BCM PID FAN RE, and set active command FAN RE to
ENABLE.
•
Does the FAN RE PID indicate ENABLE?
No = REPLACE the BCM.
A16 CHECK RECIRCULATION FAN FEEDBACK STATUS
NOTE: Wait two minutes for the recirculation fan to reach full speed. The
Yes = GO to A17.
vehicle may need to be lifted on a hoist to hear the recirculation fan
operate.
•
Enter BCM active command mode BCM PACKETED COMMANDS,
monitor BCM PID FANFDBK, and set active command FAN RE to
ENABLE.
(Continued)
2001 Ranger EV, 01/2001