Ford 2001 Ranger, Manual

Page: 472 / 1218

414-03A-69 414-03A-69 High Voltage/Traction Battery
DIAGNOSIS AND TESTING (Continued)
Battery Module Diagnostic Test
— The traction inverter module (TIM) sets DTC
C1755 when the vehicle is shut down for one
NOTE: This is a two-step process. Battery module
of four reasons: the temperature protection
voltage information must be recorded within five
within the TIM has limited current to zero
minutes of completing discharge of the traction
amps, the battery control module (BCM) sent
battery.
the TIM a request to limit source current to
NOTE: Discharge the traction battery until the
zero, an overspeed shutdown or due to lack of
Power Limit Light flashes, preferably by driving the
coolant flow causing a quick rise in
vehicle.
temperature within the TIM. If any of these
occur, the vehicle shuts down, the malfunction
•
Step 1
indicator lamp (MIL) illuminates and the
•
Using the NGS Tester, select the current year and
power limit warning indicator flashes. The
model for the vehicle being serviced.
cause of the shutdown is not necessarily due
•
Select Diagnostic Data Link.
to the TIM. The cooling system loop and
traction battery should be checked for faults.
•
Select Battery Control Module.
The TIM should not be replaced unless the
•
Select Active Commands Modes. vehicle continues to shut down and no other
failures can be detected.
•
Select Battery Module Select.
•
DTC P1794 Battery Voltage Circuit Malfunction
•
Press #8 SETUP button.
— The battery control module (BCM) monitors
•
Select Auto and Hit CANCEL button. the 39 individual 8-volt traction battery
modules through voltage sense lines. The
•
Press #7 PIDS button and highlight BAT_MV.
BCM can sense the battery module voltages if
they are within the range of 3 and 14 volts.
•
Hit START button.
The BCM sets DTC P1794 if it cannot sense
•
Press TRIGGER and rotate knob to view each
five or more battery module voltages.
battery module. SCROLL through each battery
•
DTC B1671 Battery Module Voltage Out of
module and record the information.
Range
•
Step 2
— The battery control module (BCM) monitors
•
Press CANCEL.
the 39 individual 8-volt traction battery
modules through voltage sense lines. The
•
Select Battery Module Select and press ENTER.
BCM can sense the battery module voltages if
•
Press the SETUP button and select Auto Send.
they are within the range of 3 and 14 volts.
The BCM sets DTC B1671 if it cannot sense
•
Press CANCEL.
between one and four battery module voltages.
•
Press #7 (PIDS) and select BAT_MC and SOC.
•
DTC B1676 Battery Pack Voltage Out of Range
— Do not select BAT_SOC.
— The battery control module (BCM) monitors
the traction battery voltage through the TB+
•
Press START.
and TB- voltage sense lines. The TB+ voltage
•
Press TRIGGER and SCROLL through the
sense line is connected to battery module 39
Battery Modules recording the information.
and TB- voltage sense line is connected to
battery module 1. The BCM sets DTC B1676
•
Contact the National Hotline 1-800-826-4694.
if it detects the traction battery voltage to be
Diagnostic Trouble Code (DTC) Definition
less than 50 volts or greater than 450 volts.
This is usually due to an open or shorted TB+
The following DTCs relate to the traction battery
or TB- voltage sense line.
system:
•
DTC C1755 Power Limit Shutdown Fault
2001 Ranger EV, 01/2001