Fav 900
Engine / Systems
Trouble shooting program EDC
B
Faults
Fav 900 chassis number 23/3001 and up
16.11.2000
2000
000001
B
b
19/72
Capitel
Docu-No.
Index
Date
Version
Page
Trouble shooting program EDC
Coolant Temperature Sensor (B027) (Test 5)
Failure Code (Fendt):
1.2.87
Text-module
Failure location (MAN):
87
Text-module
Failure display :
Message on Dashpanel
Text-module
Failure path:
Coolant Temperature Sensor (B027)
Text-module
Consequences:
Full Power Fuel Flow reduced by 50%, Preset Value will be activated (approx. 110
°
C)
Difficult Start in cold Conditions
Text-module
Possible Origin:
Wire discontinued, Short Circuit, Temperature Sensor Failure, Control Module (XXXX) Failure
Text-module
Test Conditons:
Adaptor box with adapting connectors connected
Diagnostic Program
Text-module
Use wiring diagrams wich are corresponding to the tractor
Fendt Component Identification:
B027 (Coolant temperature sensor)
Fendt Connector Identification:
X174 (Coolant temperature sensor), 1: not attributed, 2: Earth, 3: Signal
Text-module
Test
Measurement
Trouble shooting
Sensor Resistance
Check Resistance with adaptor box with
adaptor Connectors between Pin A22
and Pin A5 on Control Module A021,
Connector X047
- Record Failure and ambient Para-
meters with FENDIAS
- Delete Failure memory with FEN-
DIAS
Separate Sensor from Control Module
(XXXX) !
- Check again witth FENDIAS
Requested Values:
- Check Wiring
3,6 - 1,3 KOhm at 15 - 30
°
C
- Check Connectors
460 - 230 Ohm bei 75 - 80
°
C
- Replace temperature Sensor
(XXXXX)
Sensor Voltage
Check Voltage with adaptor box and ad-
aptor Connectors between Pin A22 and
Pin A5 on Control Module A021, Con-
nector X047
- Record Failure and ambient Para-
meters with FENDIAS
- Delete Failure memory with FEN-
DIAS
Requested Value: 3,0 - 1,15 V at 30 -
90
°
C
- Check again witth FENDIAS
Tolerances: U < 0.53V oder U > 4,3V
- Check Wiring
- Check Connectors
- Replace temperature Sensor
- If no failure can be identified, replace
Control Module (XXXX)