Ford 2001 Ranger, Manual

Page: 626 / 1218

414-03B-23 414-03B-23 High Voltage/Traction Battery — Nickel Metal Hydride
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1835 CURRENT SENSE CIRCUIT FAILURE
TEST STEP ACTION TO TAKE
•
Does the MAINSEN PID indicate between 0.5 and 4.5 volts?
No = GO to A8.
A3 CHECK STATUS OF CONTACTOR BOX MAIN CURRENT
SENSOR WHILE DRIVING
•
Lift the vehicle on a hoist. Refer to Section 100-02. Yes = GO to A12.
•
Start the vehicle, move the transmission range selector lever to the Drive
(D) position, and depress/release the accelerator pedal two or three times
while monitoring BCM PID MAINSEN.
•
Does the MAINSEN PID voltage increase upon acceleration?
No = REPLACE the contactor
box.
A4 CHECK AUXILIARY CURRENT SENSOR SIGNAL TO BCM
•
Remove the traction battery and connect Traction Battery High-Voltage Yes = REPLACE the BCM.
Lockout and Diagnostic Tool to the traction battery high-voltage two-pin
C3994M.
No = GO to A5.
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 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 BCM C1986, C1987 using the
BCM/TIM BOB Adapter Cable and Overlay; leave the BCM
disconnected.
•
With key ON, measure the voltage between BOB pin A17 and ground
(BOB pin A33).
•
Is the voltage between 5 and 8 volts?
A5 CHECK CIRCUITS 3996 (R/Y) AND 3705 (LB) FOR OPEN(S)
•
With key OFF, disconnect contactor box C1982 and measure the Yes = GO to A6.
resistance of the R/Y wire between pin 21 on contactor box C1982 and
BOB pin A16.
•
With key OFF, measure the resistance of the LB wire between pin 22 on No = REPAIR the wire(s) in
contactor box C1982 and BOB pin A17. question.
•
Are the resistances less than 5 ohms?
A6 CHECK CIRCUIT 3705 (LB) FOR SHORT TO GROUND
•
With key OFF, measure the resistance between BOB pin A17 and ground Yes = GO to A7.
(BOB pin A33).
•
Is the resistance greater than 10,000 ohms?
No = REPAIR the LB wire.
A7 CHECK CIRCUIT 3705 (LB) FOR SHORT TO POWER
•
With key ON, measure the voltage between BOB pin A17 and ground Yes = REPAIR the LB wire.
(BOB pin A33).
•
Is the voltage greater than 0 volts?
No = REPLACE the contactor
box.
A8 CHECK MAIN CURRENT SENSOR SIGNAL TO BCM
•
Remove the traction battery and connect Traction Battery High-Voltage Yes = REPLACE the BCM.
Lockout and Diagnostic Tool to the traction battery high-voltage two-pin
C3994M.
(Continued)
2001 Ranger EV, 01/2001