Ford 2001 Ranger, Manual

Page: 614 / 1218

414-03B-11 414-03B-11 High Voltage/Traction Battery — Nickel Metal Hydride
DIAGNOSIS AND TESTING (Continued)
•
DTC C1862 Contactor Circuit Failure
Main/Precharge Contactor Relay
Control
— The TIM controls two contactor box relays,
the precharge and main contactor relays. There
Diagnostic Trouble Code (DTC) Definition
are capacitors at the high-voltage input to the
The following DTCs relate to the contactor box TIM that are charged at a slow rate to a
relays that are controlled by the traction inverter high-voltage level when the precharge
module (TIM): contactor relay is closed. This prevents arcing
and damage to the main contactor relay if the
•
DTC B1676 Battery Pack Voltage Out of Range
main contactor relay closes without precharge.
— The TIM monitors the traction battery voltage
The TIM closes the precharge contactor relay
at its high-voltage input terminals. The TIM
when the ignition key is turned to the ON
receives high-voltage power when the
position. The TIM sets DTC C1862 if the
contactor box main contactor relay closes. The
precharge sequence fails. If this occurs, the
TIM closes the main contactor relay after the
TIM will shut down preventing the motor
precharge sequence is complete and the
from being enabled and the MIL will
ignition key is turned to the START position
illuminate. The TIM also performs a test to
with the gear selector in the P (Park) or N
determine if the main and/or precharge
(Neutral) position. The TIM sets DTC B1676
contactor relays are welded. The TIM sets
when it detects the traction battery voltage is
DTC C1862 if welded contactor relay(s) have
less than 50 volts or greater than 385 volts
been detected. If this occurs, the TIM will
after the contactor box main contactor relay
allow the motor to be enabled and the MIL
has been commanded closed. If this occurs,
will illuminate. The TIM will also send a SCP
the TIM will shut down preventing the motor
message (main contactor relay welded/stuck
from being enabled and the malfunction
closed) to the Battery Control Module (BCM)
indicator lamp (MIL) will illuminate.
so the BCM will not allow charging.
Electrical Schematic
Refer to Electrical and Vacuum Troubleshooting
Manual, Cell 21, Contactor Box Relay Control for
schematic and connector information.
Inspection and Verification
Refer to Section 100-07 .
Symptom Chart
Symptom Chart
Condition Possible Sources Action
•
DTC B1676 Battery Pack
•
Contactor box.
•
GO to Pinpoint Test A.
Voltage Out of Range
•
Circuit(s).
•
Traction inverter module
(TIM).
•
Low voltage TIM fuses:
— 9 (10A)
— 11 (7.5A)
— 24 (7.5A)
•
Traction battery high-voltage
fuse.
•
DTC C1862 Contactor Circuit
•
Circuit(s).
•
GO to Pinpoint Test B.
Failure
•
Traction inverter module
(TIM).
•
Contactor box.
2001 Ranger EV, 01/2001