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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
6/12
Capitel
Docu-No.
Index
Date
Version
Page
A012 - ECU, cold-start aid
Control data for A012 - ECU, cold-start aid
Preheating times
The R001 - heater plug requires this time to reach a temperature which can ignite the fuel in the air
current.
The preheating time depends on the on-board voltage.
The A012 - ECU measures the relevant voltage for the preheating time 3 sec +/- 1 sec after the
R001 - heater plug is switched on.
Text-module
Start standby time
The start standby time indicates how long it is still possible to start the engine with the aid of the
cold-start system after the preheating time has finished.
The telltale in the A007 - display unit flashes during this time.
The start standby time depends on the on-board voltage.
The A012 - ECU measures the relevant voltage for the start standby time shortly after its start.
Text-module
Attempted start
If the battery voltage is applied to pin K (50) of A012 - ECU, this is interpreted as a start signal after
250 ms +/- 50 ms. The afterburn phase begins with the first downward transition of the starter signal.
Text-module
Safety cut-out time
After a failed start, or if pin A (D+) becomes or remains de-energised for another reason, the
A012 - ECU switches off the Y025 - valve and the R001 - heater plug at the end of the safety cut-out
time.
The safety cut-out time is 20 sec +/- 10%.
Text-module
Glow stop
At temperatures > the glow-stop temperature, operation of the cold-start aid is not required.
The telltale in the A007 - display unit flashes to show that the engine is ready for an immediate start.
The glow-stop temperature is 2.5
°
C +/- 2.5
°
C.
Text-module
UB
Preheating time
[Volt]
[sec]
9.6
45 +/- 10%
10.6
35 +/- 10%
11.6
25 +/- 10%
12.6
18 +/- 10%
13.6
15 +/- 10%
14.6
12 +/- 10%
16.0
System switches off
UB
Start standby time
[Volt]
[sec]
9.6
30 +/- 10%
10.6
30 +/- 10%
11.6
30 +/- 10%
12.6
20 +/- 10%
13.6
10 +/- 10%
14.6
8 +/- 10%
16.0
System switches off