Ford 2001 Ranger, Manual

Page: 671 / 1218

414-03B-68 414-03B-68 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
•
Measure the resistance between pins 30 and 87 on the recirculation fan No = REPLACE the recirculation
relay. fan relay.
•
Is the resistance less than 5 ohms?
A22 CHECK CIRCUITS 3852 (BK/LG) AND 3396 (Y/LG) FOR
OPEN(S)
•
With key OFF, measure the resistance of the BK/LG wire between pin Yes = REPLACE the BCM.
85 on recirculation fan relay C2038 and BOB pin B10.
•
With key OFF, measure the resistance of the Y/LG wire between pin 30
on recirculation fan relay C2038 and pin 2 on recirculation fan C1801.
•
Are the resistances less than 5 ohms?
No = REPAIR the wire(s) in
question.
A23 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 greater than
WARNING: The traction battery contains high-voltage
4.75 volts, GO to A24.
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 less than 1 volt,
support tray in-line C1935F and in-line C1935M. GO to A25.
•
Connect BOB to BCM and BCM C1986, C1987 using the BCM/TIM
BOB Adapter Cable and Overlay.
NOTE: Wait two minutes for recirculation fan to reach full speed.
•
Enter BCM active command mode BCM PACKETED COMMANDS, set
active command FAN RE to ENABLE, and measure the voltage
between BOB pin A28 and ground (BOB pin A33).
•
Is the voltage between 2.5 and 3.5 volts?
A24 CHECK CIRCUIT 3605 (DB/W) FOR OPEN
•
With key OFF, measure the resistance of the DB/W wire between pin 3 Yes = REPLACE the recirculation
on recirculation fan C1801 and BOB pin A28. fan.
•
Is the resistance less than 5 ohms?
No = REPAIR the DB/W wire.
A25 CHECK FEEDBACK CIRCUIT
•
With key OFF, disconnect recirculation fan C1801. Yes = REPLACE the recirculation
fan.
•
With key ON, measure the voltage between pin 3 (DB/W wire) on No = GO to A26.
recirculation fan C1801 and ground.
•
Is the voltage greater than 4.75 volts?
A26 CHECK CIRCUIT 3605 (DB/W) FOR SHORT TO GROUND
•
With key OFF, disconnect BOB from BCM; leave BOB connected to Yes = REPLACE the BCM.
BCM C1986, C1987.
•
With key OFF, measure the resistance between BOB pin A28 and ground No = REPAIR the DB/W wire.
(BOB pin A33).
•
Is the resistance greater than 10,000 ohms?
2001 Ranger EV, 01/2001