Ford 2001 Ranger, Manual

Page: 446 / 1218

414-03A-43 414-03A-43 High Voltage/Traction Battery
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST B: DTC C1849 MASTER CYLINDER PRESSURE OUT OF RANGE
TEST STEP ACTION TO TAKE
•
With key ON, measure the resistance between BOB pin B22 and ground Yes = REPLACE the master
(BOB pin A29). cylinder brake pressure
sensor.
•
Is the resistance greater than 10,000 ohms?
No = REPAIR the R/W wire.
B4 CHECK TIM VOLTAGE REFERENCE TO MASTER CYLINDER
BRAKE PRESSURE SENSOR
•
With key OFF, disconnect master cylinder brake pressure sensor C1940. Yes = REPLACE the master
cylinder brake pressure
sensor.
•
With key ON, measure the voltage between the R wire on master No = GO to B5.
cylinder brake pressure sensor C1940 and ground.
•
Is the voltage greater than 4.8 volts?
B5 CHECK CIRCUIT 3603 (R) FOR OPEN
•
Connect 104-Pin Breakout Box (BOB) to TIM C4998, C4999 using the Yes = GO to B6.
BCM/TIM BOB Adapter Cable and Overlay; leave the TIM
disconnected.
•
With key OFF, measure the resistance of the R wire between master No = REPAIR the R wire.
cylinder brake pressure sensor C1940 and BOB pin B23.
•
Is the resistance less than 5 ohms?
B6 CHECK CIRCUIT 3603 (R) FOR SHORT TO GROUND
•
With key OFF, measure the resistance between BOB pin B23 and ground Yes = REPLACE the TIM. REFER
(BOB pin A29). to Section 303-14.
•
Is the resistance greater than 10,000 ohms?
No = REPAIR the R wire.
•
DTC C1837 Battery Heater Circuit Failure
Traction Battery Charging/Heating
System
— The battery control module (BCM) checks for
a traction battery heater failure during current
Diagnostic Trouble Code (DTC) Definition
charge mode and when the BCM on-demand
The following DTCs relate to the traction battery self-test is performed. The BCM actuates each
charging/heating system: heater and checks for an increase in current
coming from the battery as a result of the
•
DTC C1836 Battery Temperature Out of Range
heater being turned on. If there is no increase
— The battery control module (BCM) uses four
in current after several attempts, the BCM sets
temperature sensors to monitor the temperature
DTC C1837. The BCM uses PIDs to indicate
of the traction battery. The normal range of
the heater that has failed.
the temperature sensors is between 240 and
205,000 ohms. The BCM sets DTC C1836 if
it detects any of the temperature sensor
readings out of range. The BCM uses PIDs to
indicate the temperature sensor that is out of
range.
2001 Ranger EV, 01/2001