16. TROUBLESHOOTING MECHATRONICS-RELATED UNITS If any abnormality occurs, stop the machine, apply the parking brake and check the service code, then contact your Komatsu distributor for repairs. Electronic display panel ELECTRONIC DISPLAY PANEL SERVICE CODE LIST Transmission controller If any abnormality occurs in the transmission, reduce the travel speed by using the brake, stop the machine on a safe place. Gear shifting may not work for some failure modes. If necessary, move the shift lever to the N position, remove emergency escape connector 1 (connector No.
A-1, A-2, black 1-pin connector) and insert again, then operate the shift lever to move the machine without depressing the accelerator pedal. If the shift lever is operated with the accelerator pedal depressed, the emergency escape function will not work. Furthermore, the emergency escape function may also not work for some failure modes. When working emergency escape function, shift indicator of machine monitor panel are displayed E and transmission shift range (speed range) alternately. 2-119 NO.
ITEM SERVICE CODE ACTION ME CODE C CHATRONIC AUTION 1 LAMP OUTPUT FAILED LOW A001 02 2 CNTRL LAMP OUTPUT FAILED LOW A002 02 3 BUZZER OUTPUT FAILED LOW A003 02 4 S-NET COMMUNICATION FAILURE A012 02 5 S-NET COMMUNICATION LOST (T/M) A013 02 6 S-NET COMMUNICATION LOST (PMC) A014 02 7 S-NET COMMUNICATION LOST (ENG.) A015 02 8 S-NET COMMUNICATION LOST (SUS) A016 02 9 MACHINE SELECT INFO. FAILURE A018 04 10 OPTION INFO. FAILURE A019 04