DAF 95XF. Manual — part 301
5
Electrical installation
ELECTRICAL INSTALLATION
2-103
25. VOITH RETARDER
OPERATION
The electronic unit of the Voith retarder (D870)
is fed behind the contact through fuse E029.
If the ABS is active, wire 4619 is switched to
earth by relay G239. As a result, the Voith
retarder is deactivated.
The Voith retarder switch (C799) is fed through
wire 4710 and is equipped with 4 outputs
(positions 1 - 4) which are connected to the
Voith retarder unit. These are the 4 brake
positions.
This is how the electronic unit controls the Voith
retarder valve (B298).
If the coolant temperature is too high (measured
by the coolant temperature sensor (F544)), the
retarder control reduces the retarder pressure
by reducing the current through the proportional
magnetic valve.
A warning lamp on the instrument panel DIP-3
(D852) indicates whether or not the retarder is
active. A signal is also supplied to the CTE-2
unit (D550) through wire 3420 to disengage the
cruise control when using the retarder.
There is a connection on the CTE-2 unit to
supply the speed signal through wire 3502. This
wire is also connected to the electronic unit of
the Voith retarder (D870).
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5
ELECTRICAL INSTALLATION
Electrical installation
2-104
25
1316630/05
EL000128
18/400
1230
1230
2
1
F620
1
465
3542
3542
1
352
3543
3543
2
352
5110
5110
8
352
4710
16/200
4619
C799
4
8
3
5
6
7
8
471
4710
4
471
4710
3
471
4714
4713
5
471
4713
4712
6
471
4712
4711
7
471
4711
2
1
F544
3515
3515
4
352
3516
3516
6
352
B298
5109
5109
7
352
4960
4960
12
352
4887
4887
14
352
4
3
2
1
1230
G284
3
1
24
5
1230
5111
1230
1230
1230
4710
4714
3420
4619
13
465
4619
9
371
4619
4619
D804
11
30
3
403
4619
4619
G239
3
23
6
465
3420
3420
8
465
3502
3502
3502
D813
3
13
5
445
3502
D802
22
34
3502
3420
11/200
6/200
5/200
2/239
5/202
41/
232
D550
38/
232
19/
232
D870
1/
468
9/
469
8/
468
6/
469
15/
468
6/
468
5/
468
4/
468
9/
468
10/
468
5/
469
4/
468
1/
469
3/
469
2/
469
13/
468
3/
470
8/
470
2/
470
D878
1010
1000
1010
1000
E029
10A
D852
1
23456789
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
2
3
3
3
4
3
5
3
6
3
7
3
8
3
9
4
0
4
1
4
2
4
3
4
4
4
5
4
6
4
7
4
8
4
9
5
0
5
1
5
2
5
3
10
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5
Electrical installation
ELECTRICAL INSTALLATION
2-105
26. ZF INTARDER
SEE THE SYSTEM MANUAL FOR MORE
INFORMATION
10
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5
ELECTRICAL INSTALLATION
Electrical installation
2-106
9
371
4619
4619
D804
11
30
3
403
4619
4619
G239
3
23
26
1316630/05
EL000129
18/400
1230
1
461
1230
3515
3515
4
328
4960
4960
12
328
4887
4887
14
328
2
1
B088
3420
4888
4888
15
328
16
328
4883
4883
21
461
3516
3516
6
328
3417
3417
5
461
1230
8
464
1230
4
464
1230
3
464
4714
4713
5
464
4713
4712
6
464
4712
4711
7
464
4711
1230
4714
16/200
11/200
6/200
5/200
2/239
5/202
4619
4619
13
461
4619
3420
8
461
3502
3502
3502
D813
3
13
5
445
3502
D802
22
34
3502
3420
3420
6
461
D878
1010
1000
1010
1000
E029
10A
41/
232
D550
38/
232
19/
232
D852
2
1
F544
2
1
B089
A021
11
C799
4
8
3
5
6
7
1
23456789
1
0
1
1
1
2
1
3
1
4
1
5
1
6
1
7
1
8
1
9
2
0
2
1
2
2
2
3
2
4
2
5
2
6
2
7
2
8
2
9
3
0
3
1
3
2
3
3
3
4
3
5
3
6
3
7
3
8
3
9
4
0
4
1
4
2
4
3
4
4
4
5
4
6
4
7
4
8
4
9
5
0
5
1
5
2
5
3
12/
338
D587
1/
338
4/
338
21/
338
23/
338
14/
338
3/
338
25/
338
13/
338
15/
338
18/
338
10/
338
22/
338
9/
338
8/
338
2/
338
5/
338
D853
12/
395
10
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