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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
44/72
Capitel
Docu-No.
Index
Date
Version
Page
Trouble shooting program EDC
CAN to Pump Control module A020 (Test 28)
Failure Code (Fendt):
1.2.C3
Text-module
Failure location (MAN):
C3
Text-module
Failure Display:
Message on Dashpanel
Text-module
Failure path:
CAN-Signal of EDC Control Module (Busoff) during Engine Start.
Text-module
Consequences:
Engine runs idle (approx. 730 Rpm), Accelerator pedal, Hand throttle and memory keys are ineffective.
Text-module
Possible Origin:
Wiring Discontinuity, Short Circuit, Control Module Failure, Injection Pump failure
Text-module
Remark:
Before Replacing any Pump or Control Module, failure Codes must l be analyzed and then deleted.
In case of several Failure Codes, check first the Test procedures wich are not requesting a replacement
of the Control Module or of the pump.
Text-module
Test Conditions:
Adaptor box with adapting connectors connected
Ignition "OFF"
Text-module
Use wiring diagrams wich are corresponding to the tractor
Text-module
Test
Measurement
Trouble shooting
EDC Control Module
Check Resistance with adaptor box with
adaptor Connectors between Pin A27
and A24 on Control Module A021, Con-
nector X047
- Record Failure and ambient Para-
meters with FENDIAS
- Delete Failure Code Memory with
FENDIAS
Connector Shut: Sollwert: 60 Ohm
- Check again with FENDIAS
Connector open:Sollwert: 120 Ohm
Check - CAN-Bus Connection to EDC
Control Module to VP 44
- approx. 0 Ohm Short Circuit from
von CAN-H to CAN-L
Failure Conditions : Time Since last Bu-
soff, in wich no more Busoff must appear:
10 sec
- approx. 120 Ohm: Connection to ex-
ternal resistance (VP44) is disconti-
nued
- If failure persists , Replace Control
Module
Injection Pump
Check Resistance with adaptor box with ad-
aptor Connectors between Pin 1 and Pin 2 on
Control Module A020, Connector X046 VP 44
- Record Failure and ambient Parameters
with FENDIAS
- Delete Failure Code Memory with FEN-
DIAS
Connector connected: requested Value: 60
W ???
- Check again with CAN - Bus connection
to EDC Control Module to VP 44
Connector disconnected: requested Value:
120 W
- approx. 0 Ohm Short Circuit from von
CAN-H to CAN-L
- approx. 120 Ohm: Connection to Control
Module is discontinued
- If failure persists, Replace injection
Pump