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

Table of Contents

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