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
71/72
Capitel
Docu-No.
Index
Date
Version
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Trouble shooting program EDC
Relay "Solenoid Valve Engine Stop" K021 (Safety relay) (Test 53)
Failure Code (Fendt):
none
Text-module
Failure location (MAN):
none
Text-module
Failure display:
none
Text-module
Failure path:
Safety Relay
Text-module
Consequences:
Engine Stops
Engine does not start
Text-module
Function:
Safety Relay fullfills an important Safety function as an independand and redundant Engine Stop
System.
In Certain Emmergency Cases, the Safety relay will take over the Engine Stop if it becomes impossible
via" 0 Fuel Flow".
Safety relay interrupts Plus from Voltage supply (Pin B18) to Pump Control Module
Text-module
Possible Origin:
Wiring Discontinuity, Short circuit, Safety relay, Supply of EDC Control Unit Failure
Text-module
Test Conditions:
Adaptor box with adapting connectors connected
Text-module
Use wiring diagrams wich are corresponding to the tractor
Text-module
Test
Measurement
Trouble shooting
Function Safety Relay
Start Engine and run it in "High Idle". (Ab-
regeldrehzahl ®PWG max)
- Check Wires
Interrupt Pin B18
- Check Connectors
Failure Conditions:
- Replace Safety Relay
Engine must Stop within 10 seconds
Voltage Supply
Ignition "ON"
- Check Wires
Check Voltage with adaptor box with ad-
aptor Connectors between Pin B18 (+)
and Pin B2 (-)
- Check Connectors
Requested Value: UBat
- Replace Safety relay. If no failure
can be identified, replace (XXX) Con-
trol Module
Resistance of Safety
Relay Solenoid
Ignition "OFF"
- Check Wires
Disconnect (XXX) Control Module
- Check Connectors
Check Resistance with adaptor box with
adaptor Connectors between Pin B18
and Pin B2
- Replace Safety Relay
Requested Value: 58- 72 Ohm
