Operator Cab and Controls - Section 32 3/10 OM3216 Page 32-34 ACTION CODE DISPLAYS E02 Codes When an E02 code is present, the top line of the character display will indicate E02. The bottom line indicates whether the condition of the machine is related to overspeed or overheat. Stop the machine immediately when E03 codes are displayed. Contact your Komatsu distributor for repairs. When an E02 code is displayed, it is important to act accordingly. If an overspeed related fault is displayed, reduce the engine speed and the speed of the machine. If there is a machine failure or if maintenance is nec- essary, an action code is displayed on the character display to recommend a suitable response.
If an overheat related fault is displayed, safely stop the machine and operate the engine under no load at a mid-range speed. If more than one failure is present, the most impor- tant action code is displayed. The order of impor- tance, starting from the highest, is E03, E02, and E01. If failures of equal importance occur at the same time, the latest one is displayed. When action codes E02 or E03 occur, the alarm buzzer sounds intermittently and the central warning lamp illuminates. E03 Codes When E03 is displayed, stop the machine immedi- ately. Check the failure code, and contact your Kom- atsu distributor for repairs. Refer to Checking Failure Codes later in this chapter.
If an action code is still displayed after altering the operating conditions, check the failure code and con- tact your Komatsu distributor for repairs. E01 Codes When an E01 code is present, the top line of the character display will display E01. The bottom line will either display MAINTENANCE or another description that indicates the affected system. E01 codes do not require immediate attention. If desired, the truck can operate until the end of the shift before returning for service. When an E03 code is present, the top line displays E03. The bottom line alternates between CHECK RIGHT NOW and CALL. The display will alternate in 3 second intervals.
The telephone number is dis- played to the right of CALL. If the telephone number has not been set, the spaces will be blank. Refer to Character Display - Inputting Telephone Numbers. If MAINTENANCE is displayed, check the failure code and contact your Komatsu distributor for repairs.