Komatsu WA380-6 Wheel Loader Service Repair Shop Manual (SN: 65001 and up)

WHEEL LOADER SEN06411-00 WA380 -6 WA380Z -6 SERIAL NUMBERS WA380- 65001 WA380Z-66847 and up

WA380-6, WA380Z-6 1 SEN06413-00 WHEEL LOADER 1SHOP MANUAL WA380-6 WA380Z-6 Machine model Serial number WA380-6 65001 and up WA380Z-6 66847 and up 00 Index and foreword 1 Index Composition of shop manual .......................................................................................................................... 2 Table of contents ............................................................................................................................................. 4

SEN06413-00 00 Index and foreword 2 WA380-6, WA380Z-6 Composition of shop manual The contents of this shop manual are shown together with Form No. in a list. Note 1: Always keep the latest version of this manual in accordance with this list and utilize accordingly. The marks shown to the right of Form No. denote the following: Q: New issue (to be filed additionally) q: Revision (to be replaced for each Form No.) Note 2: This shop manual can be supplied for each Form No. Note 3: To file this shop manual in the special binder for management, handle it as follows: • Place a divider on the top of each section in the file after matching the Tub No. with No. indicated next to each Section Name shown in the table below: • File overview and other materials in sections in the order shown below and utilize them accordingly. Section Title Form Number Shop Manual, contents binder, binder label and tabs SEN06411-00 00 Index and foreword SEN06412-00 Index SEN06413-00 Foreword and general information SEN06414-00 01 Specification SEN06415-00 Specification and technical data SEN06416-00 10 Structure, function and maintenance standard SEN06417-00 Engine and cooling system SEN06418-00 Power train SEN06419-00 Steering system SEN06420-00 Brake system SEN06421-00 Undercarriage and frame SEN06422-00 Hydraulic system, Part 1 SEN06423-00 Hydraulic system, Part 2 SEN06424-00 Work equipment SEN06425-00 Cab and its attachments SEN06426-00 Electrical system, Part 1 SEN06427-00 Electrical system, Part 2 SEN06428-00 Electrical system, Part 3 SEN06429-00 20 Standard value table SEN06430-00 Standard service value table SEN06431-00 30 Testing and adjusting SEN06432-00 Testing and adjusting, Part 1 SEN06433-00 Testing and adjusting, Part 2 SEN06434-00 Testing and adjusting, Part 3 SEN06435-00 40 Troubleshooting SEN06436-00 Failure code table and fuse locations SEN06437-00 General information on troubleshooting SEN06438-00 Troubleshooting by failure code (Display of code), Part 1 SEN06439-00 Troubleshooting by failure code (Display of code), Part 2 SEN06440-00 Troubleshooting by failure code (Display of code), Part 3 SEN06441-00

00 Index and foreword SEN06413-00 WA380-6, WA380Z-6 3 Troubleshooting by failure code (Display of code), Part 4 SEN06442-00 Troubleshooting by failure code (Display of code), Part 5 SEN06443-00 Troubleshooting by failure code (Display of code), Part 6 SEN06444-00 Troubleshooting by failure code (Display of code), Part 7 SEN06445-00 Troubleshooting by failure code (Display of code), Part 8 SEN06446-00 Troubleshooting by failure code (Display of code), Part 9 SEN06447-00 Troubleshooting by failure code (Display of code), Part 10 SEN06448-00 Troubleshooting of electrical system (E-mode) SEN06449-00 Troubleshooting of hydraulic and mechanical system (H-mode) SEN06450-00 Troubleshooting of engine (S-mode) SEN06451-00 50 Disassembly and assembly SEN06452-00 General information on disassembly and assembly SEN06453-00 Engine and cooling system SEN06454-00 Power train SEN06455-00 Steering system SEN06456-00 Brake system SEN06457-00 Undercarriage and frame SEN06458-00 Hydraulic system SEN06459-00 Work equipment SEN06460-00 Cab and its attachments SEN06461-00 Electrical system SEN06462-00 90 Diagrams and drawings SEN06463-00 Hydraulic diagrams and drawings SEN06464-00 Electrical diagrams and drawings SEN06465-00

SEN06413-00 00 Index and foreword 4 WA380-6, WA380Z-6 Table of contents 00 Index and foreword Index SEN06413-00 Composition of shop manual ................................................................................................... 2 Table of contents...................................................................................................................... 4 Foreword and general information SEN06414-00 Safety notice ............................................................................................................................ 2 How to read the shop manual .................................................................................................. 7 Explanation of terms for maintenance standard ...................................................................... 9 Handling of electric equipment and hydraulic component ....................................................... 11 Handling of connectors newly used for engines ...................................................................... 20 How to read electric wire code................................................................................................. 23 Precautions when carrying out operation ................................................................................ 26 Method of disassembling and connecting push-pull type coupler ........................................... 29 Standard tightening torque table .............................................................................................. 32 Conversion table ...................................................................................................................... 36 01 Specification Specification and technical data SEN06416-00 Specification dimension drawing.............................................................................................. 2 Specifications ........................................................................................................................... 4 Weight table ............................................................................................................................. 12 Table of fuel, coolant and lubricants ........................................................................................ 16 10 Structure, function and maintenance standard Engine and cooling system SEN06418-00 Engine mount and transmission mount ................................................................................... 2 Cooling system ........................................................................................................................ 3 Cooling fan pump..................................................................................................................... 5 Brake and fan pump ................................................................................................................ 12 Cooling fan motor .................................................................................................................... 13 Power train SEN06419-00 Power train............................................................................................................................... 3 Power train system diagram .................................................................................................... 4 Drive shaft ................................................................................................................................ 7 Power train piping diagram ...................................................................................................... 8 Torque converter ...................................................................................................................... 10 Transmission............................................................................................................................ 18 Flow control valve .................................................................................................................... 52 Valve assembly ........................................................................................................................ 54 ECMV ...................................................................................................................................... 55 Main relief valve and torque converter relief valve .................................................................. 63 Axle .......................................................................................................................................... 65 Differential ................................................................................................................................ 67 Limited slip differential ............................................................................................................. 71 Final drive ................................................................................................................................ 78 Steering system SEN06420-00 Steering piping diagram ........................................................................................................... 2 Steering column ....................................................................................................................... 4 Steering pump.......................................................................................................................... 6 Steering valve .......................................................................................................................... 26 Orbit-roll valve.......................................................................................................................... 41 Stop valve ................................................................................................................................ 49 Steering relief valve ................................................................................................................. 50 Steering cylinder ...................................................................................................................... 51 Emergency steering motor....................................................................................................... 53

00 Index and foreword SEN06413-00 WA380-6, WA380Z-6 5 Emergency steering pump....................................................................................................... 54 Joystick steering lever linkage ................................................................................................. 55 Steering electric lever .............................................................................................................. 56 Joystick EPC valve .................................................................................................................. 57 Brake system SEN06421-00 Brake piping diagram............................................................................................................... 2 Charge valve ........................................................................................................................... 4 Brake valve .............................................................................................................................. 11 Accumulator (for brake) ........................................................................................................... 16 Brake ....................................................................................................................................... 18 Parking brake control ............................................................................................................... 23 Parking brake .......................................................................................................................... 24 Parking brake solenoid valve................................................................................................... 26 Emergency parking brake release valve ................................................................................. 28 Undercarriage and frame SEN06422-00 Axle mount and center hinge pin ............................................................................................. 2 Tires ......................................................................................................................................... 7 Hydraulic system, Part 1 SEN06423-00 Hydraulic piping diagram ......................................................................................................... 2 Work equipment control lever linkage ..................................................................................... 8 Hydraulic tank .......................................................................................................................... 11 Power train pump .................................................................................................................... 15 Work equipment pump ............................................................................................................ 16 Work equipment control valve ................................................................................................. 38 CLSS ....................................................................................................................................... 66 Each function and operation of each valve.............................................................................. 70 Hydraulic system, Part 2 SEN06424-00 PPC valve ................................................................................................................................ 2 Stabilizer valve......................................................................................................................... 8 Accumulator (for PPC circuit) .................................................................................................. 14 Accumulator (for ECSS) .......................................................................................................... 15 Work equipment PPC cut-off solenoid valve ........................................................................... 16 Work equipment SEN06425-00 Work equipment linkage .......................................................................................................... 2 Bucket ...................................................................................................................................... 6 Bucket positioner and boom kick-out ....................................................................................... 8 Work equipment cylinder ......................................................................................................... 14 Cab and its attachments SEN06426-00 Cab .......................................................................................................................................... 3 Air conditioner .......................................................................................................................... 4 Electrical system, Part 1 SEN06427-00 Machine monitor system.......................................................................................................... 2 Machine monitor ...................................................................................................................... 10 Electrical system, Part 2 SEN06428-00 Electrical system (Transmission controller system) ................................................................. 2 Transmission controller............................................................................................................ 46 Electrical system (Work equipment controller system) ............................................................ 50 Work equipment controller ....................................................................................................... 56 Electrical system, Part 3 SEN06429-00 Electric transmission control .................................................................................................... 2 Kickdown switch and hold switch ............................................................................................ 6 Multi-function knob .................................................................................................................. 8 Joystick steering knob ............................................................................................................. 9 KOMTRAX terminal system..................................................................................................... 10 Engine starting circuit .............................................................................................................. 12 Engine stopping circuit ............................................................................................................ 16 Preheating circuit ..................................................................................................................... 18

SEN06413-00 00 Index and foreword 6 WA380-6, WA380Z-6 Engine power mode selector circuit ......................................................................................... 19 Engine output derating function ............................................................................................... 20 Automatic warm-up function .................................................................................................... 20 Parking brake circuit ................................................................................................................ 22 Sensor ..................................................................................................................................... 24 20 Standard value table Standard service value table SEN06431-00 Standard service value table for engine................................................................................... 2 Standard service value table for chassis ................................................................................. 4 30 Testing and adjusting Testing and adjusting, Part 1 SEN06433-00 Tools for testing, adjusting, and troubleshooting...................................................................... 3 Testing engine speed ............................................................................................................... 10 Testing exhaust gas color ........................................................................................................ 12 Adjusting valve clearance ........................................................................................................ 14 Testing compression pressure ................................................................................................. 19 Testing blow-by pressure ......................................................................................................... 25 Testing engine oil pressure ...................................................................................................... 26 Testing intake air (boost) pressure........................................................................................... 28 Handling fuel system equipment .............................................................................................. 30 Releasing residual pressure in fuel system ............................................................................. 30 Testing fuel pressure................................................................................................................ 31 Testing fuel delivery, return and leak amount .......................................................................... 36 Bleeding air from fuel circuit .................................................................................................... 44 Testing leakage in fuel system................................................................................................. 45 Handling reduced cylinder mode operation ............................................................................. 46 Handling no-injection cranking operation................................................................................. 46 Handling controller voltage circuit ............................................................................................ 47 Testing muffler (main body) and muffler stack for looseness or damage................................. 47 Testing muffler for functions ..................................................................................................... 48 Testing cylinder head and manifold parts for tightness ............................................................ 48 Testing engine piping for damage and tightness ..................................................................... 49 Testing and adjusting air conditioner compressor belt tension ................................................ 50 Replacing alternator belt .......................................................................................................... 51 Adjusting transmission speed sensor ...................................................................................... 53 Adjusting length of directional lever ......................................................................................... 54 Adjusting length of gearshift lever ............................................................................................ 54 Testing directional lever ........................................................................................................... 55 Testing and adjusting power train oil pressure......................................................................... 56 Procedure for flushing torque converter and transmission hydraulic circuit ............................ 85 Method of moving machine when transmission valve is broken .............................................. 86 Testing axle end for oil leakage ............................................................................................... 90 Testing drive shaft for looseness, backlash and damage ........................................................ 90 Testing and adjusting steering stop valve ................................................................................ 91 Testing and adjusting steering wheel ....................................................................................... 93 Testing and adjusting steering oil pressure.............................................................................. 95 Bleeding air from steering circuit ............................................................................................. 98 Testing and adjusting, Part 2 SEN06434-00 Testing hydraulic drive fan ....................................................................................................... 3 Bleeding air from hydraulic drive fan circuit ............................................................................. 7 Testing brake pedal .................................................................................................................. 10 Testing and adjusting brake pedal linkage ............................................................................... 11 Testing brake performance ...................................................................................................... 12 Testing and adjusting accumulator charge pressure ............................................................... 13 Testing wheel brake oil pressure ............................................................................................. 15

00 Index and foreword SEN06413-00 WA380-6, WA380Z-6 7 Testing wheel brake oil pressure drop ..................................................................................... 16 Testing wear of wheel brake disc............................................................................................. 18 Bleeding air from wheel brake circuit ....................................................................................... 19 Releasing residual pressure in brake accumulator circuit ....................................................... 20 Testing parking brake performance ......................................................................................... 21 Testing parking brake oil pressure ........................................................................................... 22 Testing wear of parking brake disc .......................................................................................... 24 Method of releasing parking brake manually ........................................................................... 25 Testing and adjusting work equipment control lever ................................................................ 26 Testing and adjusting work equipment PPC oil pressure ........................................................ 27 Testing and adjusting work equipment oil pressure ................................................................. 33 Bleeding air from work equipment circuit ................................................................................. 37 Releasing residual pressure in work equipment circuit ........................................................... 38 Procedure for testing of nitrogen gas pressure and charging of nitrogen gas of ECSS (Electronically Controlled Suspension System) accumulator ........................................... 40 Testing and adjusting bucket positioner ................................................................................... 46 Testing and adjusting boom kick-out ....................................................................................... 48 Checking proximity switch operation pilot lamp ....................................................................... 49 Procedure for testing diodes.................................................................................................... 50 Preparation work for troubleshooting for electric system......................................................... 51 How to start operation of KOMTRAX terminal ......................................................................... 60 Lamp display of KOMTRAX terminal ....................................................................................... 65 Testing and adjusting, Part 3 SEN06435-00 Adjusting replaced, reassembled or added sensor, controller, etc. with machine monitor ...... 3 Special functions of machine monitor (EMMS) ........................................................................ 5 Pm-clinic inspection table ........................................................................................................ 74 40 Troubleshooting Failure code table and fuse locations SEN06437-00 Failure code table .................................................................................................................... 2 Fuse locations ......................................................................................................................... 19 General information on troubleshooting SEN06438-00 Points to remember when troubleshooting .............................................................................. 2 Sequence of events in troubleshooting ................................................................................... 3 Testing before troubleshooting ................................................................................................ 5 Classification and procedures of troubleshooting .................................................................... 6 Information contained in troubleshooting table ........................................................................ 9 Connection table for connector pin numbers ........................................................................... 11 T- branch box and T- branch adapter table ............................................................................. 47 Troubleshooting by failure code (Display of code), Part 1 SEN06439-00 Failure code [1500L0] (TORQFLOW transmission: Double meshing) ...................................... 3 Failure code [15SAL1] (ECMV F clutch: When command current is OFF, fill signal is ON) ..... 4 Failure code [15SALH] (ECMV F clutch: When command current is ON, fill signal is OFF) .... 6 Failure code [15SBL1] (ECMV R clutch: When command current is OFF, fill signal is ON) ..... 8 Failure code [15SBLH] (ECMV R clutch: When command current is ON, fill signal is OFF) .... 10 Failure code [15SEL1] (ECMV 1st clutch: When command current is OFF, fill signal is ON)... 12 Failure code [15SELH] (ECMV 1st clutch: When command current is ON, fill signal is OFF).. 14 Failure code [15SFL1] (ECMV 2nd clutch: When command current is OFF, fill signal is ON).. 16 Failure code [15SFLH] (ECMV 2nd clutch: When command current is ON, fill signal is OFF). 18 Failure code [15SGL1] (ECMV 3rd clutch: When command current is OFF, fill signal is ON).. 20 Failure code [15SGLH] (ECMV 3rd clutch: When command current is ON, fill signal is OFF) . 22 Failure code [15SHL1] (ECMV 4th clutch: When command current is OFF, fill signal is ON) .. 24 Failure code [15SHLH] (ECMV 4th clutch: When command current is ON, fill signal is OFF) . 26 Failure code [2F00MA] (Parking brake: Malfunction) ................................................................ 28 Failure code [2G43ZG] (Accumulator: Low oil pressure) .......................................................... 31 Failure code [44K0L4] (Bucket positioner: ON/OFF signals disagree) ..................................... 35

SEN06413-00 00 Index and foreword 8 WA380-6, WA380Z-6 Troubleshooting by failure code (Display of code), Part 2 SEN06440-00 Failure code [AA1ANX] (Air cleaner: Clogging) ....................................................................... 4 Failure code [AB00L6] (Alternator: Signal disagrees with operating state of engine) .............. 7 Failure code [AB00MA] (Alternator: Malfunction) .................................................................... 11 Failure code [B@BAZG] (Rotation derating by low engine oil pressure) ................................. 15 Failure code [B@BAZK] (Engine oil: Low level) ...................................................................... 16 Failure code [B@BCNS] (Coolant: Overheating)..................................................................... 17 Failure code [B@BCZK] (Coolant: Low level).......................................................................... 19 Failure code [B@BEBF] (Water in fuel error) .......................................................................... 22 Failure code [B@C7NS] (Brake oil: Overheating) ................................................................... 24 Failure code [b@CENS] (Torque converter oil: Overheating) .................................................. 26 Failure code [B@CENS] (Torque converter oil: Overheating) ................................................. 29 Failure code [B@HANS] (Hydraulic oil: Overheating) ............................................................. 32 Failure code [CA111] (Abnormality in engine controller) .......................................................... 34 Failure code [CA115] (Engine Ne or Bkup speed sensor error) .............................................. 35 Failure code [CA122] (Charge pressure sensor high error) ..................................................... 36 Failure code [CA123] (Charge pressure sensor low error) ...................................................... 38 Failure code [CA131] (Throttle sensor high error) ................................................................... 40 Failure code [CA132] (Throttle sensor low error) ..................................................................... 42 Failure code [CA144] (Coolant sensor high error) ................................................................... 44 Failure code [CA145] (Coolant sensor low error) .................................................................... 46 Failure code [CA153] (Charge temperature sensor high error) ............................................... 48 Failure code [CA154] (Charge temperature sensor low error) ................................................. 50 Failure code [CA155] (Derating of speed by abnormally high charge temperature) ................ 52 Failure code [CA187] (Sensor power supply 2 low error) ........................................................ 54 Failure code [CA221] (Atmospheric pressure sensor high error) ............................................ 56 Failure code [CA222] (Atmospheric sensor low error) ............................................................. 58 Failure code [CA227] (Sensor power supply 2 high error)....................................................... 60 Failure code [CA234] (Engine overspeed)............................................................................... 61 Failure code [CA238] (Ne speed sensor power supply error) .................................................. 62 Troubleshooting by failure code (Display of code), Part 3 SEN06441-00 Failure code [CA271] (IMV/PCV1 Short circuit) ....................................................................... 3 Failure code [CA272] (IMV/PCV1 Disconnection) ................................................................... 4 Failure code [CA322] (Injector #1 open/short error) ................................................................ 6 Failure code [CA323] (Injector #5 open/short error) ................................................................ 8 Failure code [CA324] (Injector #3 open/short error) ................................................................ 10 Failure code [CA325] (Injector #6 open/short error) ................................................................ 12 Failure code [CA331] (Injector #2 open/short error) ................................................................ 14 Failure code [CA332] (Injector #4 open/short error) ................................................................ 16 Failure code [CA342] (Calibration code inconsistency) ........................................................... 18 Failure code [CA351] (Injectors drive circuit error) .................................................................. 20 Failure code [CA352] (Sensor power supply 1 low error) ........................................................ 23 Failure code [CA386] (Sensor power supply 1 high error)....................................................... 25 Failure code [CA428] (Abnormally high level in water sensor) ................................................ 26 Failure code [CA429] (Abnormally low level in water sensor) ................................................. 27 Failure code [CA431] (Idle validation switch error) .................................................................. 28 Failure code [CA432] (Idle validation action error) .................................................................. 31 Failure code [CA435] (Engine oil pressure switch error) ......................................................... 33 Failure code [CA441] (Battery voltage low error) ..................................................................... 34 Failure code [CA442] (Battery voltage high error) ................................................................... 38 Failure code [CA449] Common rail pressure high error 2 ....................................................... 41 Failure code [CA451] (Common rail pressure sensor high error) ............................................ 43 Failure code [CA452] (Common rail pressure sensor low error) ............................................. 45 Failure code [CA488] (Derating of torque by abnormally high charge temperature) ............... 47 Failure code [CA553] (Common rail pressure high error 1) ..................................................... 48 Failure code [CA559] (Supply pump pressure very low error) ................................................. 49 Failure code [CA689] (Engine Ne speed sensor error)............................................................ 50 Failure code [CA731] (Engine Bkup speed sensor phase error) ............................................. 53

00 Index and foreword SEN06413-00 WA380-6, WA380Z-6 9 Failure code [CA757] (All continuous data lost error) .............................................................. 54 Failure code [CA778] (Engine Bkup speed sensor error) ........................................................ 58 Failure code [CA1633] (KOMNET datalink timeout error) ....................................................... 61 Failure code [CA2185] (Throttle sensor power supply voltage high error) .............................. 64 Failure code [CA2186] (Throttle sensor power supply voltage low error) ................................ 65 Troubleshooting by failure code (Display of code), Part 4 SEN06442-00 Failure code [CA2249] (Supply pump pressure very low error 2) ............................................ 3 Failure code [CA2311] (Abnormality in IMV solenoid) ............................................................. 4 Failure code [CA2555] (Intake heater relay disconnection error) ............................................ 6 Failure code [CA2556] (Intake heater relay short circuit error) ................................................ 9 Failure code [D150KA] (Emergency steering relay: Disconnection) ........................................ 12 Failure code [D150KB] (Emergency steering relay: Short circuit) ........................................... 15 Failure code [D150KY] (Emergency steering relay: Short circuit with power supply line) ....... 18 Failure code [D160KA] (Backup lamp relay: Disconnection) ................................................... 21 Failure code [D160KB] (Backup lamp relay: Short circuit) ...................................................... 24 Failure code [D191KA] (Joystick steering neutral safety relay: Disconnection) ...................... 27 Failure code [D191KB] (Joystick steering neutral safety relay: Short circuit) .......................... 29 Failure code [D191KY] (Joystick steering neutral safety relay: Short circuit with power supply line) ....................................................................................... 31 Failure code [D192KA] (ECSS solenoid: Disconnection) ........................................................ 33 Failure code [D192KB] (ECSS solenoid: Short circuit) ............................................................ 34 Failure code [D192KY] (ECSS solenoid: Short circuit with power supply line) ........................ 35 Failure code [D193KA] (Joystick steering solenoid cut relay: Disconnection) ......................... 36 Failure code [D193KB] (Joystick steering solenoid cut relay: Short circuit) ............................ 38 Failure code [D193KY] (Joystick steering solenoid cut relay: Short circuit with power supply line) ....................................................................................... 40 Failure code [D5ZHKA] (Terminal C signal: Disconnection) .................................................... 43 Failure code [D5ZHKB] (Terminal C signal: Short circuit) ........................................................ 49 Failure code [D5ZHKZ] (Terminal C signal: Disconnection or short circuit) ............................. 54 Failure code [D5ZHL6] (Terminal C signal: Signal does not match engine running or stopped state) ................................................................................................ 61 Failure code [DA80L4] (Auto grease controller: ON/OFF signals disagree) ............................ 66 Failure code [DAF3KK] (Machine monitor: Low source voltage (input) ................................... 68 Failure code [DAF5KP] (Machine monitor: Low output voltage) .............................................. 72 Failure code [DAFRKR] (CAN communication with machine monitor: Defective communication (Abnormality in target component system) .............................. 76 Troubleshooting by failure code (Display of code), Part 5 SEN06443-00 Failure code [DAQ0KK] (Transmission controller: Low source voltage) .................................. 4 Failure code [DAQ0KT] (Transmission controller: Abnormality in controller) .......................... 8 Failure code [DAQ2KK] (Transmission controller load power supply line: Low source voltage (input) ................................................................................. 9 Failure code [DAQ9KQ] (Transmission controller model selection: Disagreement of model selection signals) ......................................................... 12 Failure code [DAQRKR] (CAN communication with transmission controller: Defective communication (Abnormality in target component system) ............... 13 Failure code [DAQRMA] (Transmission controller option setting: Malfunction) ....................... 19 Failure code [DB2RKR] (CAN communication with engine controller: Defective communication (Abnormality in target component system) ............................... 20 Failure code [DB90KK] Work equipment controller: Low source voltage (input) ..................... 24 Failure code [DB90KT] Work equipment controller: Abnormality in controller ......................... 26 Failure code [DB92KK] Work equipment controller load power supply line: Low source voltage (input) ................................................................................. 27 Failure code [DB95KX] Work equipment controller power supply output: Out of input signal range .................................................................................... 29 Failure code [DB99KQ] (Work equipment controller model selection: Disagreement in model selection signals) ......................................................... 32 Failure code [DB9RKR] CAN communication with work equipment controller: Defective communication (Abnormality in target component system) ............................... 33

Komatsu WA380-6 Wheel Loader Service Repair Shop Manual (SN: 65001 and up)

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