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TROUBLESHOOTING
ACTION CODE
If any problem occurs, stop the machine, apply the parking brake and check the service code, then contact your
Komatsu distributor for repairs.
If action code "E03" is displayed on the character display (1), or if an action code is displayed after taking the remedy
when action code "E02" was displayed, or if "MAINTENANCE" is displayed together with action code "E01", do as
follows to check the failure code.
1. If an action code is displayed, pressed the top (>) portion of machine monitor mode selector switch (2) and check
the failure code. The failure code is displayed on character display (1).
2. Press the top (>) portion of machine monitor mode selector switch (2) again. The service meter and odometer
will be displayed for several seconds, and the screen will then return to the action code screen.
If more than one failure has occurred, the next failure code is displayed.
3. Check the failure code, then contact your Komatsu distributor for repairs.
REMARK
The 6-digit code displayed on the left of the line at the top of the character display is the failure code.
The code displayed at the right side of the failure code shows the controller that detected the failure code.
MON: Machine monitor
TM: Transmission controller
ENG: Engine controller
BK: Retarder controller
The line at the bottom of the character display shows the system where the failure was generated.
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OPERATION
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