Komatsu WA800-3, WA800-3E0 Wheel Loader Repair Manual

Serial Number:
50001 and up (SEBM013411)
60001 and up, 70001 and up (SEN02034-09)
Manuals: Shop Manual
01 GENERAL ……………………………………………………………… 01-1
10 STRUCTURE AND FUNCTION ……………………………….. 10-1
20 TESTING AND ADJUSTING …………………………………… 20-1
30 DISASSEMBLY AND ASSEMBLY …………………………… 30-1
40 MAINTENANCE STANDARD………………………………….. 40-1
90 OTHERS………………………………………………………………… 90-1
Manual Extract:
Failure code [56] (Disconnection or short circuit with chassis ground in caution buzzer relay system) is displayed

– This troubleshooting is carried out when there is still an abnormality, so when disconnecting the connector and inserting the T-adapter, or when removing the T-adapter and returning the connector to its original position, if the error code is no longer displayed on the monitor display, the problem has been removed.

– Before carrying out troubleshooting, check that all the related connectors are properly inserted.
– When the joystick steering lever is not being used, leave it at the neutral position.
– Always connect any disconnected connectors before going on to the next step.
A-1 Related electrical circuit diagram