.
ATTACHMENTS, OPTIONS
ARSC (AUTOMATIC RETARDER SPEED CONTROL)
TROUBLESHOOTING
WHEN A PROBLEM OCCURS IN THE SYSTEM
This system is equipped with a self-diagnostic function. If any problem occurs, a failure code is displayed by the
controller LED under the assistant's seat.
No.
Failure
code
Detail
Remedy
pattern*
1 0.1 Abnormality in power source 1
2 1.0 Disconnection, short circuit with ground, short circuit in engine speed sensor system 1
31.3
Disconnection, short circuit with ground, short circuit in transmission output shaft
speed sensor system
1
4 1.5 Short circuit with ground in retarder oil temperature sensor system 1
5 1.7 Disconnection, short circuit with ground, short circuit in accelerator signal 1
6 1.8 Disconnection, short circuit with ground in suspension pressure sensor (left) system 1
7 1.9 Disconnection, short circuit with ground in suspension pressure sensor (right) system 1
8 4.2 Disconnection, short circuit in exhaust brake signal system 2
9 4.3 Disconnection, short circuit in ARSC caution lamp system 1
10 4.4 Disconnection in READY lamp system 2
11 4.5 Disconnection, short circuit in central warning lamp system or buzzer system 2
12 5.2 Short circuit with ground in exhaust brake signal system 2
13 5.3 Short circuit with ground in ARSC caution lamp system 1
14 5.4 Short circuit with ground in READY lamp system 2
15 5.5 Short circuit with ground in central warning lamp system or buzzer system 2
16 6.0 Failure in engine speed sensor system 1
17 7.0 Disconnection, short circuit in set speed display up output 2
18 7.1 Disconnection, short circuit in set speed display down output 2
19 7.2 Disconnection, short circuit in set speed display clear output 2
20 7.3 Short circuit with ground in set speed display up output 2
21 7.4 Short circuit with ground in set speed display down output 2
22 7.5 Short circuit with ground in set speed display clear output 2
23 8.1 Short circuit with ground in pressure control valve system 1
24 8.3 Short circuit with ground in pressure control valve system 1
25 8.5
Failure in pressure control valve (retarder remains applied) or failure in pressure
switch 1 system
1
26 8.7
Failure in pressure control valve (retarder has no effect) or failure in pressure switch
1 system
1
27 8.9 Short circuit with ground in pressure cracking valve 1
28 9.0 Disconnection, short circuit in pressure cracking valve 1
29 9.1
Failure in pressure cracking valve (remains open) or failure in pressure switch 2
system
1
30 9.2
Failure in pressure cracking valve (does not open) or failure in pressure switch 2
system
1
31 9.3 Disconnection, short circuit in system switch system 1
32 9.4 Short circuit with ground in system switch system 1
33 9.5 Disconnection, short circuit with ground in travel speed set switch system 1
*See next page.
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