Ford 2001 Ranger, Manual

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414-03A-26 414-03A-26 High Voltage/Traction Battery
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1835 CURRENT SENSE CIRCUIT FAILURE
TEST STEP ACTION TO TAKE
•
Is the resistance less than 5 ohms?
No = REPAIR the LB/BK wire.
A17 CHECK CIRCUIT 3138 (LB/BK) FOR SHORT TO GROUND
•
With key OFF, measure the resistance between BOB pin B22 and ground Yes = REPLACE the contactor
(BOB pin A33). box.
•
Is the resistance greater than 10,000 ohms?
No = REPAIR the LB/BK wire.
Electrical Schematic
Current Leakage Detection
Refer to Electrical and Vacuum Troubleshooting
Diagnostic Trouble Code (DTC) Definition
Manual, Cell 16, Traction Battery System for
The following DTC relates to current leakage
schematic and connector information.
detection:
Inspection and Verification
•
DTC C1839 Leakage Fault
Refer to Section 100-07 .
— Current leakage is a low level of impedance
between vehicle chassis and either traction
battery positive (TB+) or traction battery
negative (TB-). The battery control module
(BCM) checks for a parallel combination of
bus leakage impedance (between vehicle
chassis and TB+, and between vehicle chassis
and TB-) during the charge and drive cycles.
The BCM sets DTC C1839 when it detects a
low level of leakage (between 10,000 and
50,000 ohms) during charging, high level
leakage (less than 10,000 ohms) during
charging, leakage (less than 50,000 ohms)
during driving, or if the leakage circuit fails.
The BCM uses PIDs to indicate when the
leakage occurred, the severity of the leakage
when it occurred, and the status of the leakage
circuits.
2001 Ranger EV, 01/2001