Komatsu HD785-5, Operation & Maintenance Manual

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ATTACHMENTS, OPTIONS
ASR-II (AUTOMATIC SPIN REGULATOR II)
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 behind the assistant's seat.
No.
Failure
code
Details
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
3 1.1 Disconnection in RR wheel revolution sensor 1
4 1.2 Disconnection in RL wheel revolution sensor 1
5 1.3
Disconnection, short circuit with ground, short circuit in transmission output shaft
speed sensor system
1
6 1.6 Failure of steering rudder angle sensor 2
7 1.7 Disconnection, short circuit with ground, short circuit in accelerator signal system 1
8 4.3 Disconnection, short circuit in ARSC & ASR caution lamp system 1
9 4.5 Disconnection, short circuit in central warning lamp system or buzzer system 2
10 5.3 Short circuit with ground in ARSC & ASR caution lamp system 1
11 5.5 Short circuit with ground in central warning lamp system or buzzer system 2
12 6.0 Failure in engine speed sensor system 1
13 6.1 Failure in RR wheel revolution sensor system 1
14 6.2 Failure in RL wheel revolution sensor system 1
15 6.3 Failure in transmission output axis revolution sensor system 1
16 8.1 Short circuit with ground in pressure control valve system (right) 1
17 8.2 Short circuit with ground in pressure control valve system (left) 1
18 8.3 Disconnection, short circuit in pressure control valve system (right) 1
19 8.4 Disconnection, short circuit in pressure control valve system (left) 1
20 8.5 Failure in pressure control valve (right) or failure in pressure switch 1 system 1
21 8.6 Failure in pressure control valve (left) or failure in pressure switch 1 system 1
22 8.7 Failure in pressure control valve (right) or failure in pressure switch 1 system 1
23 8.0 Failure in pressure control valve (left) or failure in pressure switch 1 system 1
24 8.9 Short circuit with ground in pressure cracking valve 1
25 9.0 Disconnection, short circuit in pressure cracking valve 1
26 9.1
Failure in pressure cracking valve (remains open) or failure in pressure switch 2
system
1
27 9.2
Failure in pressure cracking valve (does not open) or failure in pressure switch 2
system
1
Remedy pattern 1
If the central warning lamp and the ASR caution lamp flash and the buzzer sounds, it means that a serious problem
has occurred in the ASR system.
Operation of the ASR system is stopped.
Stop in a safe place quickly and stop using the ASR by turning the system switch off.
When the system switch is turned OFF, the central warning lamp and ASR caution lamp go out and the buzzer
stops.
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