Ford 2001 Ranger, Manual

Page: 400 / 1218

414-02-8 414-02-8 Auxiliary Battery Charging
DIAGNOSIS AND TESTING (Continued)
PINPOINT TEST D: AUXILIARY BATTERY WARNING INDICATOR ILLUMINATED (AUXILIARY BATTERY
TEMPERATURE SENSOR FAILURE)
TEST STEP ACTION TO TAKE
•
With key ON, measure the voltage between Y/R wire, DG/P wire on Yes = REPAIR the wire(s) in
auxiliary temperature sensor C1953 and ground. question.
•
Are any of the voltages greater than 0 volts?
No = REPLACE the DC/DC
converter.
D6 CHECK AUXILIARY BATTERY TEMPERATURE SENSOR
•
With key OFF, reconnect auxiliary battery temperature sensor C1953. Yes = System OK. CHECK wiring
for intermittent connections.
•
With key ON, monitor IAA module PIDs EXT UT2 and VBATIAA No = REPLACE the auxiliary
and compare the readings to the values below: battery temperature sensor.
Temperature
— 0
°
C (32
°
F) = 14.1-14.7 volts
— 5
°
C (41
°
F) = 14.0-14.6 volts
— 10
°
C (50
°
F) = 13.9-14.5 volts
— 15
°
C (59
°
F) = 13.8-14.4 volts
— 20
°
C (68
°
F) = 13.7-14.3 volts
— 25
°
C (77
°
F) = 13.6-14.3 volts
— 30
°
C (86
°
F) = 13.5-14.2 volts
— 35
°
C (95
°
F) = 13.4-14.2 volts
— 40
°
C (104
°
F) = 13.3-14.1 volts
— 45
°
C (113
°
F) = 13.3-14.0 volts
— 50
°
C (122
°
F) = 13.3-13.9 volts
— 55
°
C (131
°
F) = 13.3-13.8 volts
— 60
°
C (140
°
F) = 13.3-13.8 volts
•
Is the voltage OK?
GENERAL PROCEDURES
Auxiliary Battery Charging
1. For additional information, refer to 2001
Ranger Workshop Manual Section 414-00.
Auxiliary Battery Capacity Test
1. For additional information, refer to 2001
Ranger Workshop Manual Section 414-00.
2001 Ranger EV, 01/2001