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. 2-112