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Farmer 400
Fav 700
Fav 900
Electrics / General system
A012 - ECU, cold-start aid
E
Testing
Fav 900 chassis number 23/3001 and up
09.08.2001
9000
000147
E
a
4/12
Capitel
Docu-No.
Index
Date
Version
Page
A012 - ECU, cold-start aid
Text-module
Note:
Unless otherwise stated, all current values refer to rated voltage of 12 VDC.
Pin
Pin designation
Function
Signal
A
(D+)
Generator indicator (). As long as
engine is running at sufficiently high speed,
G002/G004 - generator charging voltage is
present.
5 mA - 20 mA at 12 VDC
Engine running / UD+ > 9 VDC
Engine not running / UD+ < 2.5 VDC
Pin
Pin designation
Function
Signal
L
Check
To check A012 - ECU at temperatures > 0
°
C
this terminal must be connected to vehicle
earth.
Max. 50 mA
Pin
Pin designation
Function
Signal
K
50 (17)
S002 - switch, ignition. If starter motor is ope-
rated, battery voltage can be measured here.
Min. 5 mA
Max. 100 mA
Pin
Pin designation
Function
Signal
G
15 (19)
Ignition (preheating). If battery voltage is
connected to this pin (by turning
S002 - switch), A012 - ECU starts preheating.
Voltage must not be interrupted at this pin
throughout operation since program
sequence of A012 - ECU is otherwise
disrupted.
Max. 8 A
Fuse F013 (X050)
Pin
Pin designation
Function
Signal
J
Y025 - valve, cold-start aid
Output for Y025 - valve is connected to pin G
(input terminal 15). Protection against short-
circuit is provided by fuse F013 (X050).
Approx. 2.5 A
Pin
Pin designation
Function
Signal
H
Telltale in A007 - display unit
Telltale is connected here to A007 - display
unit. Output switches vehicle earth to telltale
which is supplied with power via its second
pin.
3 W / 12 VDC