Ford 2001 Ranger, Manual

Page: 418 / 1218

414-03A-15 414-03A-15 High Voltage/Traction Battery
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST B: DTC C1862 CONTACTOR CIRCUIT FAILURE
TEST STEP ACTION TO TAKE
•
With key OFF, measure the resistance between BOB pin 22 and ground Yes = REPLACE the contactor
(BOB pin 65). box.
•
Is the resistance greater than 10,000 ohms?
No = REPAIR the T wire.
B10 CHECK TRACTION BATTERY VOLTAGE
•
With key ON, monitor BCM PID BAT PV and TIM PID BAT PV. Yes = REPLACE the TIM. REFER
to Section 303-14.
•
Is there more than a 30-volt difference between the BAT PV PIDs?
No = System OK. CHECK wiring
for intermittent connections.
B11 CHECK FOR WELDED MAIN CONTACTOR RELAY
•
Enter TIM active command mode CONTACTOR OUTPUT CONTROL Yes = System OK. CHECK wiring
and monitor TIM PID BAT PV. for intermittent connections.
•
Does the voltage for the BAT PV PID decrease?
No = GO to B12.
B12 CHECK MAIN AND PRECHARGE CONTACTOR RELAY
OUTPUTS
•
Connect 104-Pin Breakout Box (BOB) to TIM and TIM C4998, C4999 Yes = GO to B13.
using the BCM/TIM BOB Adapter Cable and Overlay.
•
Enter traction inverter module (TIM) active command mode No = REPLACE the contactor
CONTACTOR OUTPUT CONTROL. box.
•
With key ON, measure the voltage between BOB pins A8, A18 and
ground (BOB pin A29).
•
Is either voltage greater than 10 volts?
B13 CHECK CIRCUITS 3991 (T) AND 3986 (DG) FOR SHORT(S) TO
POWER
•
With key OFF, disconnect the TIM from the BOB; leave BOB connected Yes = REPAIR the wire(s) in
to TIM C4998, C4999. question.
•
With key ON, measure the voltage between BOB pins A8, A18 and No = REPLACE the TIM. REFER
ground (BOB pin A29). to Section 303-14.
•
Is either voltage greater than 1 volt?
2001 Ranger EV, 01/2001