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Farmer 400
Fav 700
Fav 900
Electrics / General system
S047 - switch, exhaust brake
E
Testing
711 / 712 from 21/1001 onwards - 714 / 716 from 21/2001 onwards,
31.07.2001
9000
000136
E
a
2/2
Capitel
Docu-No.
Index
Date
Version
Page
S047 - switch, exhaust brake
Single ECU
Text-module
Note:
Ignition "ON"
Text-module
Note:
Chapter 9000 Reg. E - Checking A004 - ECU, control console
Text-module
Exhaust brake circuit, Fav 900 chassis number 23/3001 and up
S047 - switch, exhaust brake transmits signal to A004 - ECU, control console.
A004 - ECU, control console transmits CAN message to A002 - ECU, enhanced control via K-bus.
A002 - ECU, enhanced control forwards CAN message to A021 - ECU, EDC via G-bus.
A021 - ECU, EDC switches voltage (12 - 14 VDC) to K014 - relay, exhaust brake at pin 18.
K014 - relay, exhaust brake swsupply (12 - 14 VDC) to Y006 - valve, exhaust brake.
Text-module
Exhaust brake circuit for Fav 711/712 chassis number 21/1001 and up, 714/716
chassis number 21/2001 and up, Farmer 400
S047 - switch, exhaust brake transmits signal to A004 - ECU, control console.
A004 - ECU, control console transmits CAN message to A002 - ECU, enhanced control via K-bus.
A002 - ECU, enhanced control switches voltage (12 - 14 VDC) to Y006 - valve, exhaust brake at pin 46.
Text-module
Note:
Chapter 9000 Reg. C - Electric circuit diagrams
Chapter 9700 Reg. A - Electronic concept
Test
Pin
Target va-
lue
Condition
Possible cause of fault
Signal
34
2.4 VDC
S047 - switch not actua-
ted
A
Reading 8.0 VDC, fault in
component
B
Reading 0 VDC:
5.1 VDC
S047 - switch actuated
-
Unplug component
-
If reading is 0 VDC, fault in
A004 ECU (pin 34) or in wiring
Earth
1
-
If reading is 8.0 VDC, fault in
component.