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16. TROUBLESHOOTING
16.4 OTHER TROBLE
16.4.1 ACTION CODE
If action code “02” or “04” appears, take the action as below.
1. If action code “02” is displayed, stop the machine on a safe place
and apply the parking brake.
If action code “04” is displayed, immediately stop the machine
in a safe place and apply the parking brake.
2. While the action code is displayed, depress check switch 1 for
the caution pilot lamp bulb until the buzzer sounds three times
or more.
3. If the service code indicating possible cause is displayed on
speedometer 2 and action code display 3, release the check
switch for caution pilot lamp bulb and check the service speed.
If action code “04” is displayed, check the service code and
immediately stop the engine.
4. After checking the service code, contact your Komatsu distribu-
tor for repairs.
REMARK
‡ The most significant two-digit number is displayed on the speed-
ometer and the least significant two-digit number on the action
code display.
‡ The first digit indicates an English letter and the following two
digits indicate numeric letters.
‡ The service code is seen for 3 seconds, then the normal screen
returns. If two or more troubles occur at the same time, each
trouble is displayed for 3 seconds in turn.
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