![background image](http://html1.mh-extra.com/html/fendt/favorit-900/favorit-900_workshop-manual_4001870522.webp)
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
17/72
Capitel
Docu-No.
Index
Date
Version
Page
Trouble shooting program EDC
Intake Pressure sensor B028 (Test 4)
Failure Code (Fendt):
1.2.85
Text-module
Failure location (MAN):
85
Text-module
Failure display :
Message on Dashpanel
Text-module
Failure path:
Intake pressure sensor (XXXX)
- Signal to high
- Signal to low
Signal not compatible with Atmospheric pressure sensor (within Control Module (XXXX))
Text-module
Consequences:
Full Power Fuel Flow Reduced by 20-40%, Set Value: approx. 200 mbar Intake pressure dark smoke
emission during accelerations
Text-module
Possible Origin:
Discontinued wire, Short circuit, Intake Pressure Sensor, Leak in Intake Tubing, Control Module failure
Atmospheric Pressure sensor failure within EDC Contro Module A021
Text-module
Test Conditons:
Adaptor Box with adaptor connectors connected
Ignition "ON"
Apply pressure onto Pressure sensor with ALDA- TesterP or Mitywac Duo - Manual Pump (Absolute
Pressure) from MAN
Text-module
Remark:
Only few Millibar (mBar) are to measured with FENDIAS, the engine running idle
Text-module
Use wiring diagrams wich are corresponding to the tractor
Fendt Component identification:
B028 (Intake Pressure Sensor)
Fendt Connector Identification.:
X175 (Intake Pressure Sensor) 1: Signal, 2: 5V Supply, 3: Earth
Test
Measurement
Trouble shooting
Voltage Supply
Check Voltage with adaptor box with ad-
aptor Connectors between Pin A23 (+)
and Pin A17 (-) on Control Module A021,
Connector X047
- Record Failure and ambient Para-
meters with FENDIAS
- Delete Failure memory with FEN-
DIAS
Requested Value: 4,75 - 5,25 V
- Check again with FENDIAS
- Check Wiring
- Check Connectors
- If no failure can be identified, Re-
place Control Module
Signal Amplitude
Check Voltage with adaptor box with ad-
aptor Connectors between Pin A12 (+)
and Pin A17 (-) on Control Module A021
Connector X047 . Check Intake Pres-
sure with FENDIAS
- Record Failure and ambient Para-
meters with FENDIAS
- Delete Failure memory with FEN-
DIAS
- Check again with FENDIAS
Requested Values:
- Check Wiring
1,50 - 1,70 V at 1500 mbar
- Check Connectors