Ford 2001 Ranger, Manual

Page: 652 / 1218

414-03B-49 414-03B-49 High Voltage/Traction Battery — Nickel Metal Hydride
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST H: CHARGER UNDER CURRENT FAULT
TEST STEP ACTION TO TAKE
H1 CHECK CONTACTOR BOX AUXILIARY CURRENT SENSOR
FOR IN-RANGE FAILURE
•
With key ON, monitor battery control module (BCM) PID AUX CNT. Yes = GO to H2.
•
Turn the A/C on and turn the steering wheel back and forth. No = REPLACE the contactor
•
Does the amperage for the AUX CNT PID increase and decrease?
box.
H2 CHECK CHARGER CONTACTOR RELAY OUTPUT CIRCUIT
•
Disconnect the 12-volt auxiliary battery negative cable and remove the Yes = GO to H10.
high-voltage power distribution box (HVPDB) cover.
No = GO to H3.
WARNING: The following test steps contain high-voltage
procedures. 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.
•
Disconnect HVPDB traction battery charger high-voltage C1923.
•
Reinstall the HVPDB cover.
•
Reconnect the 12-volt auxiliary battery negative cable.
•
Enter battery control module (BCM) active command mode
CONTACTOR OUTPUT CONTROL and set active command
CHARGER to CLOSE.
•
With key ON, measure the voltage between circuit 3170 (O wire) and
circuit 3171 (W wire) on HVPDB traction battery charger high-voltage
C1923F.
•
Is the voltage greater than 300 volts?
H3 CHECK HVPDB CIRCUITS 3134 (O) AND 3133 (W) (OUTSIDE
OF TRACTION BATTERY SUPPORT TRAY) FOR OPEN(S)
•
With key OFF, disconnect high-voltage auxiliary load in-line C1935 on Yes = GO to H4.
the traction battery support tray and measure the resistance between
circuit 3170 (O wire) on HVPDB traction battery charger high-voltage
C1923F and circuit 3134 (O wire) on in-line C1935M.
•
With key OFF, measure the resistance between circuit 3171 (W wire) on No = REPLACE the HVPDB.
HVPDB traction battery charger high-voltage C1923 and circuit 3133 (W
wire) on in-line C1935M.
•
Are the resistances less than 5 ohms?
H4 CHECK CIRCUITS 3134 (O) AND 3133 (W) (INSIDE TRACTION
BATTERY SUPPORT TRAY) FOR OPEN(S)
•
Remove the traction battery and connect Traction Battery High-Voltage Yes = GO to H5.
Lockout and Diagnostic Tool to the traction battery high-voltage two-pin
C3994M.
NOTE: Contactor box C3985 is mounted on the passenger side of the
No = REPLACE high-voltage
BCM.
harness (14B326) between
•
With key OFF, disconnect contactor box C3985 and measure the
traction battery support tray
resistance of the O wire between contactor box C3985F and traction
in-line C1935F and
battery support tray in-line C1935F.
contactor box C3985.
•
With key OFF, measure the resistance of the W wire between contactor
box C3985F and traction battery support tray in-line C1935F.
•
Is the resistance less than 5 ohms?
H5 CHECK CHARGER CONTACTOR RELAY
•
Reconnect contactor box C3985. Yes = GO to H6.
(Continued)
2001 Ranger EV, 01/2001