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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
59/72
Capitel
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Trouble shooting program EDC
Speed Sensor Signal Processing, Pump Control Module A020 (Test 42)
Failure Code (Fendt):
1.2.B7
Text-module
Failure location (MAN):
B7
Text-module
Failure display:
Message on Dashpanel
Text-module
Failure path:
Speed Signal to Pum Control Module (XXXX) , Speed Sensor (XXXX) on Flywheel
Text-module
onsequences:
Max Speed reduced to 1800 Rpm
Torque reduced down to 25-40%
Text-module
Function:
Monitoring of negative ramp within Monitoring Window
Text-module
Possible Origin:
Speed Sensor (XXXX) failure on Fly wheel or distonce to flywheel to important, Injection pump not
corrrectly mounted (Start of delivery to Top Dead point not OK), Control mo0dule failure , Injection
Pump Failure.
Text-module
Remark 1:
In Case of intermittent Contact , FC 4.2.18, "Start of Injection Control Deviation " may occur
simultaneously
Text-module
Remark 2:
Occurs simultaneously with FC 4.2.84
Text-module
Fendt Component Identification:
B025 (Speed Sensor)
Fendt Connector Identification:
X172 (Speed Sensor), 1: Earth, 2: Signal
Text-module
Test
Measurement
Trouble shooting
Speed sensor B025
See Test 3 Distance to Flywheel : 0,5mm
- 1,5 mm
- Record Failure and ambient Para-
meters with FENDIAS
- Delete Failure Code Memory with
FENDIAS
- Check again with FENDIAS
- siehe Test 3
- Check Distance between Sensor
and Flywheel
Connection from Con-
trol module A021 to
Pump A020
Check Signal with adaptor box with ad-
aptor Connectors at Start Speed betwen
Pin A35 Control module A021, Connec-
tor X047; and Pin 8 Injection Pump A020,
Connector X046
- Record Failure and ambient Para-
meters with FENDIAS
- Delete Failure Code Memory with
FENDIAS
Requested Values: If system is OK ,
Voltage will be 0,7V lower than U Bat.
- Check again with FENDIAS
UB is available during Failure.
- Check Connectors