Ford 2001 Ranger, Manual

Page: 443 / 1218

414-03A-40 414-03A-40 High Voltage/Traction Battery
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST A: DTC C1839 LEAKAGE FAULT
TEST STEP ACTION TO TAKE
A63 CHECK FOR CURRENT LEAKAGE IN A/C IMC
•
With key OFF, remove the high-voltage power distribution box Yes = GO to A64.
(HVPDB) cover and disconnect HVPDB C1917 (to A/C IMC).
•
Reinstall the HVPDB cover. No = REPLACE the A/C IMC.
•
With key ON, monitor BCM PID . REFER to Section 412-03.
•
Wait approximately 50 seconds.
•
Does the PID indicate less than 50,000 ohms?
A64 CHECK FOR CURRENT LEAKAGE IN POSITIVE
TEMPERATURE COEFFICIENT (PTC) HEATER
•
With key OFF, disconnect PTC switching module high-voltage C1912. Yes = GO to A65.
•
With key ON, monitor BCM PID . No = REPLACE the PTC heater.
•
Wait approximately 50 seconds. REFER to Section 412-02.
•
Does the PID indicate less than 50,000 ohms?
A65 CHECK FOR CURRENT LEAKAGE IN PTC SWITCHING
MODULE
•
With key OFF, remove the high-voltage power distribution box Yes = GO to A66.
(HVPDB) cover and disconnect HVPDB C1920 (to PTC switching
module).
•
Reinstall the HVPDB cover. No = REPLACE the PTC
•
With key ON, monitor BCM PID . switching module. REFER
•
Wait approximately 50 seconds. to Section 412-02.
•
Does the PID indicate less than 50,000 ohms?
A66 CHECK FOR CURRENT LEAKAGE IN DC/DC CONVERTER
•
With key OFF, remove the high-voltage power distribution box Yes = REPLACE the HVPDB.
(HVPDB) cover and disconnect HVPDB C1914 (to DC/DC converter).
•
Reinstall the HVPDB cover. No = REPLACE the DC/DC
•
With key ON, monitor BCM PID . converter. REFER to Section
•
Wait approximately 50 seconds. 414-02.
•
Does the PID indicate less than 50,000 ohms?
•
DTC C1849 Master Cylinder Pressure Out of
Regenerative Braking
Range
Diagnostic Trouble Code (DTC) Definition
— The traction inverter module (TIM) uses the
The following DTCs relate to the regenerative
input signal from the master cylinder brake
braking system:
pressure sensor to determine the amount of
regenerative braking to be applied. The normal
•
DTC C1446 Brake Switch Circuit Failure
range of the master cylinder brake pressure
— The brake pedal position (BPP) switch
sensor is between 0.5 and 4.5 volts. The TIM
provides a 12-volt input signal to the traction
sets DTC C1849 if the signal is out of range.
inverter module (TIM) when the brake pedal
If this occurs, the TIM disables regenerative
is depressed. The TIM sets DTC C1446 if
braking, and the malfunction indicator lamp
master cylinder brake pressure is detected
(MIL) and red brake warning indicator
without the brake pedal depressed. If this
illuminate.
occurs, the TIM disables regenerative braking,
and the malfunction indicator lamp (MIL) and
Electrical Schematic
red brake warning indicator illuminate.
Refer to Electrical and Vacuum Troubleshooting
Manual, Cell 26, Motor/Transaxle Control for
schematic and connector information.
Inspection and Verification
Refer to Section 100-07 .
2001 Ranger EV, 01/2001