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
53/72
Capitel
Docu-No.
Index
Date
Version
Page
Trouble shooting program EDC
"Timeout" CAN - Message Pump Control Module A020 to EDC Control Module
A021 (Test 37)
Failure Code (Fendt):
1.2.B4
Text-module
Failure location (MAN):
B4
Text-module
Failure display :
Message on Dashpanel
Text-module
Failure path:
CAN-Signal from Pump Control Module to EDC Control Module (Timeout)
Text-module
Consequences:
Engine runs Idle (approx. 730 Rpm). After 5 seconds system switches to EDC Pedal Position Sensor,
Only Pedal acceleration will be possible. Hand Throttle, memory keys and terminalö settings are no
more available. Max. Speed Reduction to 2100 Rpm as well as Power Reduction may occur.
Text-module
Possible Origin:
Wiring discontinuity , Short Circuit, Contol Module failure, Injection pump Failure
Text-module
Remark 1:
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 connected: Requested va-
lue: 60 Ohm
- Check again with FENDIAS
- approx. 0 Ohm Short Circuit from
CAN-H to CAN-L
Connector disconnected: Requested
value: 120 Ohm
- approx. 120 Ohm; Connection to
End Resistor (VP44) is discontinued
Failure conditions: No Indications availa-
ble
- if Failure persists, Replace Control
Module (XXXX)
Injection pump
Check Resistance with adaptor box with
adaptor Connectors between Pin 1 and
Pin 2 on Control Module A020, Connec-
tor X046, VP 4Failure Conditions:4
- Document failure ( including atmo-
spheric parameters) using FENDIAS
- Delete EDC failure codes using
FENDIAS
Connector closed circuit:
Requested value: 60 Ohm
- Test again using FENDIAS
Connector open circuit.
Requested value: 120 Ohm
- If failure persists, replace injection
pump
