Ford Ranger EV (2001 year). Manual - part 121
414-03A-80
414-03A-80
High Voltage/Traction Battery
DIAGNOSIS AND TESTING (Continued)
Symptom Chart
Symptom Chart
Condition
Possible Sources
Action
•
All High-Voltage Auxiliary
•
High-voltage harness
•
Load Systems Do Not
(14B326).
Operate
•
High-voltage power
distribution box (HVPDB).
•
Contactor box.
Pinpoint Tests
Special Tool(s)
Traction Battery High-Voltage Service Cord 418-F218
PINPOINT TEST A: ALL HIGH-VOLTAGE AUXILIARY LOAD SYSTEMS DO NOT OPERATE
TEST STEP
ACTION TO TAKE
A1 VERIFY ALL HIGH-VOLTAGE AUXILIARY LOAD SYSTEMS DO
NOT OPERATE
•
With key ON, turn the steering wheel. If there is no power assist, the power Yes
System OK. CHECK wiring
steering system does not operate.
=
for intermittent connections.
•
With key ON, measure the voltage of the 12-volt auxiliary battery. The
No =
If none of the high-voltage
voltage should be greater than 13 volts.
auxiliary load systems
operate, GO to A2.
•
With key ON, operate the heater and air conditioner (if equipped).
If some of the high-voltage
•
Do all the high-voltage auxiliary load systems operate?
auxiliary load systems
operate, REFER to the
appropriate section(s) for the
system(s) in question.
A2 CHECK HIGH-VOLTAGE NEGATIVE BUS (OUTSIDE TRACTION
BATTERY SUPPORT TRAY) FOR OPEN
•
With key OFF, disconnect high-voltage auxiliary load in-line C1935 on the
Yes
GO to A3.
traction battery support tray and power steering assembly high-voltage
=
C1895.
•
Measure the resistance between circuit 3141 (W wire) on power steering
No =
REPLACE the high-voltage
assembly C1895 and circuit 3133 (W wire) on high-voltage auxiliary load
power distribution box
in-line C1935M.
(HVPDB).
•
Is the resistance less than 5 ohms?
A3 CHECK HIGH-VOLTAGE NEGATIVE BUS (INSIDE TRACTION
BATTERY SUPPORT TRAY) FOR OPEN
•
Remove the traction battery.
Yes
REPLACE the contactor
=
box.
No =
REPLACE high-voltage
harness 14B326 between
traction battery support tray
in-line C1935F and
contactor box C3985.
(Continued)