Komatsu WA500-7 Wheel Loader Service Repair Manual (SN:10001 and up)

WHEEL LOADER SEN05693-03 WA500 -7 SERIAL NUMBERS 10001 and up

SHOP MANUAL WHEEL LOADER WA500-7 Model WA500-7 Serial Number 10001 and up 00 Index and foreword 1 00 Index and foreword WA500-7 00-1

00 Index and foreword Index Index (ALL-0310-001-A-00-A) 00 Index and foreword ....................................................................................................................... 00-1 Index ......................................................................................................................................... 00-2 Foreword, safety and general information ................................................................................... 00-18 Important safety notice ....................................................................................................... 00-18 How to read the shop manual .............................................................................................. 00-25 Explanation of terms for maintenance standard .................................................................... 00-27 Handling equipment of fuel system devices .......................................................................... 00-29 Handling of intake system parts ........................................................................................... 00-30 Handling of hydraulic equipment .......................................................................................... 00-31 Method of disconnecting and connecting of push-pull type coupler ......................................... 00-33 Handling of electrical equipment .......................................................................................... 00-36 How to read electric wire code ............................................................................................. 00-44 Precautions when performing operation ............................................................................... 00-47 Practical use of KOMTRAX ................................................................................................. 00-51 Standard tightening torque table .......................................................................................... 00-52 List of abbreviation ............................................................................................................. 00-56 Conversion table ................................................................................................................ 00-61 01 Specification................................................................................................................................. 01-1 Table of contents ........................................................................................................................ 01-2 Specifications ............................................................................................................................. 01-3 Specification drawing ........................................................................................................... 01-3 Specification ........................................................................................................................ 01-5 Weight table ...................................................................................................................... 01-12 Table of fuel, coolant, and lubricants .................................................................................... 01-14 10 Structure and function ................................................................................................................... 10-1 Table of contents ........................................................................................................................ 10-2 Engine and cooling system .......................................................................................................... 10-4 Engine related parts ............................................................................................................. 10-4 KVGT.................................................................................................................................. 10-6 EGR system piping drawing ................................................................................................ 10-12 EGR system circuit diagram ................................................................................................ 10-14 EGR valve ......................................................................................................................... 10-15 EGR cooler........................................................................................................................ 10-17 KCCV layout drawing ......................................................................................................... 10-19 KCCV ventilator ................................................................................................................. 10-21 KDPF ................................................................................................................................ 10-23 Engine mount and transmission mount ................................................................................ 10-27 Joint .................................................................................................................................. 10-28 Cooling system .................................................................................................................. 10-29 Cooling fan pump ............................................................................................................... 10-33 Cooling fan motor ............................................................................................................... 10-42 Power train............................................................................................................................... 10-49 Power train system............................................................................................................. 10-49 Drive shaft ......................................................................................................................... 10-52 Power train piping drawing .................................................................................................. 10-53 Transmission control .......................................................................................................... 10-54 Torque converter ................................................................................................................ 10-56 Torque converter regulator valve ......................................................................................... 10-63 Transmission ..................................................................................................................... 10-65 Transfer ............................................................................................................................ 10-82 Transmission control valve.................................................................................................. 10-84 Forward and reverse clutch ECMV and gear speed clutch ECMV ........................................... 10-87 Lockup clutch ECMV .......................................................................................................... 10-94 Main relief valve, torque converter relief valve, and main flow selector valve............................ 10-98 Torque converter oil cooler ................................................................................................ 10-103 Center support ................................................................................................................. 10-104 Lubricating oil relief valve .................................................................................................. 10-105 Axle ................................................................................................................................ 10-106 00-2 WA500-7

00 Index and foreword Index Differential ....................................................................................................................... 10-110 Final drive ....................................................................................................................... 10-120 Steering system...................................................................................................................... 10-122 Layout of steering parts .................................................................................................... 10-122 Steering column ............................................................................................................... 10-123 Joystick steering lever linkage ........................................................................................... 10-124 Steering pump ................................................................................................................. 10-125 Steering control valve ....................................................................................................... 10-137 Orbitrol valve ................................................................................................................... 10-147 Stop valve ....................................................................................................................... 10-153 Emergency steering piping diagram ................................................................................... 10-154 Diverter valve .................................................................................................................. 10-155 Emergency steering pump ................................................................................................ 10-159 Brake system ......................................................................................................................... 10-160 Layout of brake parts ........................................................................................................ 10-160 Charge valve ................................................................................................................... 10-162 Brake valve ..................................................................................................................... 10-168 Slack adjuster .................................................................................................................. 10-173 Accumulator (for brake) .................................................................................................... 10-176 Brake .............................................................................................................................. 10-177 Parking brake control ....................................................................................................... 10-179 Parking brake .................................................................................................................. 10-180 Parking brake solenoid valve ............................................................................................ 10-182 Parking brake emergency release valve ............................................................................. 10-185 Undercarriage and frame ......................................................................................................... 10-186 Axle mount ...................................................................................................................... 10-186 Center hinge pin .............................................................................................................. 10-187 Tire ................................................................................................................................. 10-189 Hydraulic system .................................................................................................................... 10-191 Hydraulic component layout .............................................................................................. 10-191 Work equipment control .................................................................................................... 10-193 Hydraulic tank .................................................................................................................. 10-195 Double type gear pump .................................................................................................... 10-198 Work equipment pump...................................................................................................... 10-199 Control valve ................................................................................................................... 10-220 CLSS .............................................................................................................................. 10-229 Hydraulic circuit diagram and names of valves.................................................................... 10-233 Accumulator charge valve................................................................................................. 10-245 Work equipment lock solenoid valve .................................................................................. 10-249 Accumulator (for PPC circuit) ............................................................................................ 10-250 Accumulator (for ECSS) ................................................................................................... 10-251 Work equipment ..................................................................................................................... 10-252 Work equipment linkage ................................................................................................... 10-252 Bucket ............................................................................................................................ 10-253 Bucket positioner and boom positioner ............................................................................... 10-255 Lubrication of work equipment ........................................................................................... 10-256 Cab and its attachments .......................................................................................................... 10-258 ROPS cab ....................................................................................................................... 10-258 Electrical system .................................................................................................................... 10-259 Engine control system ...................................................................................................... 10-259 Preheating system ........................................................................................................... 10-261 Power mode selector circuit .............................................................................................. 10-263 Engine output limit function ............................................................................................... 10-264 Automatic warm-up function .............................................................................................. 10-265 Parking brake control system ............................................................................................ 10-266 System operating lamp function......................................................................................... 10-268 Battery disconnect switch function ..................................................................................... 10-270 Backup lamp and brake lamp ............................................................................................ 10-272 Clearance lamp and headlamp .......................................................................................... 10-274 WA500-7 00-3

00 Index and foreword Index Working lamp .................................................................................................................. 10-275 Horn circuit ...................................................................................................................... 10-276 Wiper and window washer circuit ....................................................................................... 10-277 Transmission controller system ......................................................................................... 10-280 Work equipment control system......................................................................................... 10-305 Machine monitor system ................................................................................................... 10-325 Rear view monitor system ................................................................................................. 10-349 KOMTRAX system ........................................................................................................... 10-352 System component parts .................................................................................................. 10-355 Sensor ............................................................................................................................ 10-389 20 Standard value tables.................................................................................................................... 20-1 Table of contents ........................................................................................................................ 20-2 Standard service value table ........................................................................................................ 20-3 Standard value table for engine ............................................................................................. 20-3 Standard value table for machine .......................................................................................... 20-5 Standard value table for electrical system............................................................................. 20-20 30 Testing and adjusting .................................................................................................................... 30-1 Table of contents ........................................................................................................................ 30-2 General information on testing and adjusting ................................................................................. 30-4 Tools for testing and adjusting ............................................................................................... 30-4 Sketch of tools for testing and adjusting ................................................................................. 30-9 Engine and cooling system ........................................................................................................ 30-11 Testing engine speed ......................................................................................................... 30-11 Testing boost pressure ....................................................................................................... 30-13 Testing exhaust gas temperature ......................................................................................... 30-15 Testing exhaust gas color ................................................................................................... 30-17 Testing and adjusting valve clearance .................................................................................. 30-20 Testing compression pressure ............................................................................................. 30-22 Testing blowby pressure ..................................................................................................... 30-25 Testing engine oil pressure ................................................................................................. 30-27 Testing EGR valve and KVGT driving oil pressure ................................................................. 30-29 Testing fuel pressure .......................................................................................................... 30-31 Testing fuel return rate and leakage ..................................................................................... 30-33 Bleeding air from fuel system .............................................................................................. 30-37 Testing fuel circuit for leakage ............................................................................................. 30-39 Handling cylinder cutout mode operation .............................................................................. 30-40 Handling no injection cranking operation .............................................................................. 30-41 Testing of KDPF and muffler stack for looseness and damage ............................................... 30-42 Testing of installed condition of cylinder head and manifolds .................................................. 30-43 Testing engine piping for damage and looseness .................................................................. 30-44 Replacing and adjusting belt for alternator and air conditioner compressor .............................. 30-45 Procedures for cleaning fuel doser....................................................................................... 30-46 Writing compensation values at replacement of injector and engine controller ......................... 30-49 Power train............................................................................................................................... 30-53 Adjusting transmission output speed sensor ......................................................................... 30-53 Adjusting transmission input speed sensor ........................................................................... 30-54 Flushing procedure for torque converter and transmission hydraulic circuit.............................. 30-55 Retrieval of disabled machine due to transmission valve failure.............................................. 30-57 Testing oil leakage from axle final drive ................................................................................ 30-59 Testing drive shaft for looseness, backlash, and damage ....................................................... 30-60 Testing and adjusting power train oil pressure ....................................................................... 30-61 Steering system........................................................................................................................ 30-75 Testing directional lever ...................................................................................................... 30-75 Testing steering wheel ........................................................................................................ 30-76 Testing work equipment control lever ................................................................................... 30-78 Testing and adjusting steering circuit oil pressure .................................................................. 30-80 Bleeding air from steering cylinder circuit.............................................................................. 30-83 Testing and adjusting steering stopper valve......................................................................... 30-84 Brake system ........................................................................................................................... 30-86 00-4 WA500-7

00 Index and foreword Index Testing brake pedal ............................................................................................................ 30-86 Testing and adjusting brake pedal linkage ............................................................................ 30-87 Adjustment procedure of transmission cut-off proximity switch of left brake pedal .................... 30-88 Testing braking performance ............................................................................................... 30-89 Testing and adjusting of accumulator charge pressure........................................................... 30-90 Testing wheel brake oil pressure.......................................................................................... 30-92 Testing lowering of wheel brake pressure ............................................................................. 30-93 Testing wear of wheel brake disc ......................................................................................... 30-96 Bleeding air from wheel brake circuit .................................................................................... 30-97 Releasing remaining pressure in brake accumulator circuit .................................................... 30-99 Testing parking brake performance .................................................................................... 30-100 Testing parking brake oil pressure ..................................................................................... 30-101 Testing wear of parking brake disc ..................................................................................... 30-103 Method of releasing parking brake manually ....................................................................... 30-104 Hydraulic system .................................................................................................................... 30-106 Testing fan speed ............................................................................................................. 30-106 Testing fan pump circuit oil pressure .................................................................................. 30-107 Bleeding air from hydraulic fan circuit ................................................................................. 30-109 Testing work equipment EPC oil pressure ........................................................................... 30-111 Testing and adjusting work equipment oil pressure .............................................................. 30-113 Bleeding air from work equipment circuit ............................................................................ 30-119 Releasing remaining pressure from work equipment circuit .................................................. 30-120 Checking of ECSS accumulator nitrogen gas pressure and procedure for charging accumulator with nitrogen gas ................................................................................................ 30-121 Work equipment ..................................................................................................................... 30-126 Testing and adjusting bucket position detection lever........................................................... 30-126 Testing and adjusting boom position detection lever ............................................................ 30-127 Electrical system .................................................................................................................... 30-128 Adjusting replaced, reassembled or added sensor, controller, etc. with machine monitor .............................................................................................................. 30-128 Special functions of machine monitor ................................................................................. 30-130 Adjusting rearview camera angle ....................................................................................... 30-223 Handling voltage circuit of engine controller ........................................................................ 30-224 Handling battery disconnect switch .................................................................................... 30-225 Testing diodes ................................................................................................................. 30-226 Pm clinic ................................................................................................................................ 30-227 Pm Clinic service ............................................................................................................. 30-227 Check sheet .................................................................................................................... 30-228 40 Troubleshooting ............................................................................................................................ 40-1 Table of contents ........................................................................................................................ 40-2 General information on troubleshooting ...................................................................................... 40-12 Troubleshooting points ....................................................................................................... 40-12 Sequence of events in troubleshooting................................................................................. 40-14 Check before troubleshooting.............................................................................................. 40-16 Inspection procedure before troubleshooting ........................................................................ 40-18 Preparation work for troubleshooting of electrical system ....................................................... 40-35 Classification and procedures for troubleshooting ................................................................. 40-41 Symptom and troubleshooting numbers ............................................................................... 40-44 Information in troubleshooting table ..................................................................................... 40-47 Connector list and layout .................................................................................................... 40-49 Connector contact identification........................................................................................... 40-64 T-branch box and T-branch adapter table ........................................................................... 40-100 Fuse location table ........................................................................................................... 40-106 Precautions for KDPF (KCSF and KDOC) Cleaning and Replacement ................................. 40-109 Precautions on troubleshooting of machine monitor ............................................................ 40-112 Processing procedure of harness checker for troubleshooting of machine monitor LCD unit .................................................................................................................... 40-114 Fabrication of dummy temperature sensor (for KDOC and KDPF temperature sensors)............................................................................................................. 40-119 WA500-7 00-5

00 Index and foreword Index Fabrication of short-circuit connector (for CA1883 and CA3135)........................................... 40-120 Failure codes table ........................................................................................................... 40-121 Troubleshooting by failure code (Display of code) ...................................................................... 40-136 Failure code [1500L0] Double Engagement of T/M Clutches ................................................ 40-136 Failure code [15B0NX] Transmission Oil Filter Clogging ...................................................... 40-137 Failure code [15SAL1] Release Trouble of ECMV (Forward) ................................................ 40-138 Failure code [15SALH] Malfunction of ECMV (Forward) ....................................................... 40-140 Failure code [15SBL1] Release Trouble of ECMV (Reverse) ................................................ 40-142 Failure code [15SBLH] Malfunction of ECMV (Reverse) ...................................................... 40-144 Failure code [15SEL1] Release Trouble of ECMV (1st clutch) .............................................. 40-146 Failure code [15SELH] Malfunction of ECMV (1st) .............................................................. 40-148 Failure code [15SFL1] Release Trouble of ECMV (2nd) ....................................................... 40-150 Failure code [15SFLH] Malfunction of ECMV (2nd) ............................................................. 40-152 Failure code [15SGL1] Release Trouble of ECMV (3rd) ....................................................... 40-154 Failure code [15SGLH] Malfunction of ECMV (3rd).............................................................. 40-156 Failure code [15SHL1] Release Trouble of ECMV (4th) ....................................................... 40-158 Failure code [15SHLH] Malfunction of ECMV (4th) .............................................................. 40-160 Failure code [2F00MA] Failure of Parking Brake Circuit ....................................................... 40-162 Failure code [2G42ZG] Accumulator Oil Pressure Low (Front) ............................................. 40-165 Failure code [2G43ZG] Accumulator Oil Pressure Low (Rear) .............................................. 40-167 Failure code [879AKA] A/C Inner Sensor Open Circuit ........................................................ 40-169 Failure code [879AKB] A/C Inner Sensor Short Circuit ......................................................... 40-170 Failure code [879BKA] A/C Outer Sensor Open Circuit ........................................................ 40-171 Failure code [879BKB] A/C Outer Sensor Short Circuit ........................................................ 40-172 Failure code [879CKA] Ventilating Sensor Open Circuit ....................................................... 40-173 Failure code [879CKB] Ventilating Sensor Short Circuit ....................................................... 40-174 Failure code [879DKZ] Sunlight Sensor Open or Short Circuit .............................................. 40-175 Failure code [879EMC] Ventilation Damper Abnormality ...................................................... 40-176 Failure code [879FMC] Air Mix Damper Abnormality ........................................................... 40-177 Failure code [989A00] Engine Overrun Prevention Activated ............................................... 40-178 Failure code [989L00] Engine Controller Lock Caution 1 ...................................................... 40-179 Failure code [989M00] Engine Controller Lock Caution 2 ..................................................... 40-180 Failure code [989N00] Engine Controller Lock Caution 3 ..................................................... 40-181 Failure code [A1U0N3] HC Desorb Request 1 .................................................................... 40-182 Failure code [A1U0N4] HC Desorb Request 2 .................................................................... 40-184 Failure code [AA10NX] Air Cleaner Clogging ...................................................................... 40-186 Failure code [B@BAZG] Eng Oil Press Low ....................................................................... 40-188 Failure code [B@BCNS] Eng Water Overheat .................................................................... 40-189 Failure code [B@BCZK] Eng Water Level Low ................................................................... 40-190 Failure code [B@CENS] T/C Oil Temp. Overheat ................................................................ 40-192 Failure code [B@HANS] HYD Oil Temp. Overheat .............................................................. 40-193 Failure code [CA115] Eng Ne and Bkup Speed Sens Error .................................................. 40-194 Failure code [CA122] Chg Air Press Sensor High Error ....................................................... 40-195 Failure code [CA123] Chg Air Press Sensor Low Error ........................................................ 40-197 Failure code [CA131] Throttle Sensor High Error................................................................. 40-199 Failure code [CA132] Throttle Sensor Low Error ................................................................. 40-201 Failure code [CA135] Eng Oil Press Sensor High Error ........................................................ 40-203 Failure code [CA141] Eng Oil Press Sensor Low Error ........................................................ 40-205 Failure code [CA144] Coolant Temp Sens High Error .......................................................... 40-207 Failure code [CA145] Coolant Temp Sens Low Error ........................................................... 40-209 Failure code [CA153] Chg Air Temp Sensor High Error ........................................................ 40-211 Failure code [CA154] Chg Air Temp Sensor Low Error......................................................... 40-213 Failure code [CA187] Sensor 2 Supply Volt Low Error ......................................................... 40-215 Failure code [CA221] Ambient Press Sens High Error ......................................................... 40-217 Failure code [CA222] Ambient Press Sens Low Error .......................................................... 40-219 Failure code [CA227] Sensor 2 Supply Volt High Error......................................................... 40-221 Failure code [CA234] Eng Overspeed ................................................................................ 40-222 Failure code [CA238] Ne Speed Sensor Supply Volt Error ................................................... 40-223 Failure code [CA239] Ne Speed Sens Supply Volt High Error............................................... 40-224 00-6 WA500-7

00 Index and foreword Index Failure code [CA271] IMV/PCV1 Short Error ...................................................................... 40-225 Failure code [CA272] IMV/PCV1 Open Error ...................................................................... 40-226 Failure code [CA273] PCV2 Short Error ............................................................................. 40-227 Failure code [CA274] PCV2 Open Error ............................................................................. 40-228 Failure code [CA322] Inj #1(L#1) Open/Short Error ............................................................. 40-229 Failure code [CA323] Inj #5(L#5) Open/Short Error ............................................................. 40-231 Failure code [CA324] Inj #3(L#3) Open/Short Error ............................................................. 40-233 Failure code [CA325] Inj #6(L#6) Open/Short Error ............................................................. 40-235 Failure code [CA331] Inj #2(L#2) Open/Short Error ............................................................. 40-237 Failure code [CA332] Inj #4(L#4) Open/Short Error ............................................................. 40-239 Failure code [CA343] ECM Critical Internal Failure .............................................................. 40-241 Failure code [CA351] Injectors Drive Circuit Error ............................................................... 40-242 Failure code [CA352] Sensor 1 Supply Volt Low Error ......................................................... 40-243 Failure code [CA356] Mass Air Flow Sensor High Error ....................................................... 40-245 Failure code [CA357] Mass Air Flow Sensor Low Error ........................................................ 40-247 Failure code [CA386] Sensor 1 Supply Volt High Error......................................................... 40-249 Failure code [CA431] Idle Validation Sw Error ..................................................................... 40-250 Failure code [CA432] Idle Validation Process Error ............................................................. 40-253 Failure code [CA441] Battery Voltage Low Error ................................................................. 40-256 Failure code [CA442] Battery Voltage High Error ................................................................. 40-258 Failure code [CA449] Rail Press Very High Error................................................................. 40-259 Failure code [CA451] Rail Press Sensor High Error ............................................................. 40-260 Failure code [CA452] Rail Press Sensor Low Error ............................................................. 40-262 Failure code [CA515] Rail Press Sens Sup Volt High Error .................................................. 40-264 Failure code [CA516] Rail Press Sens Sup Volt Low Error ................................................... 40-266 Failure code [CA553] Rail Press High Error ........................................................................ 40-268 Failure code [CA555] Crankcase Press High Error 2 ........................................................... 40-269 Failure code [CA556] Crankcase Press High Error 3 ........................................................... 40-270 Failure code [CA559] Rail Press Low Error ......................................................................... 40-271 Failure code [CA595] Turbo Speed High Error 2 ................................................................. 40-275 Failure code [CA687] Turbo Speed Low Error ..................................................................... 40-276 Failure code [CA689] Eng Ne Speed Sensor Error .............................................................. 40-278 Failure code [CA691] Intake Air Temp Sens High Error ........................................................ 40-280 Failure code [CA692] Intake Air Temp Sens Low Error......................................................... 40-282 Failure code [CA697] ECM Internal Temp Sensor High Error................................................ 40-284 Failure code [CA698] ECM Int Temp Sensor Low Error ........................................................ 40-285 Failure code [CA731] Eng Bkup Speed Sens Phase Error ................................................... 40-286 Failure code [CA778] Eng Bkup Speed Sensor Error........................................................... 40-287 Failure code [CA1117] Persistent Data Lost Error ................................................................ 40-289 Failure code [CA1664] KDOC Malfunction.......................................................................... 40-290 Failure code [CA1691] Regeneration Ineffective ................................................................. 40-293 Failure code [CA1695] Sensor 5 Supply Volt High Error ....................................................... 40-296 Failure code [CA1696] Sensor 5 Supply Volt Low Error ....................................................... 40-297 Failure code [CA1843] Crankcase Press Sens High Error .................................................... 40-299 Failure code [CA1844] Crankcase Press Sens Low Error .................................................... 40-301 Failure code [CA1879] KDPF Delta P Sensor High Error ..................................................... 40-303 Failure code [CA1881] KDPF Delta P Sensor Low Error ...................................................... 40-305 Failure code [CA1883] KDPF Delta P Sens In Range Error .................................................. 40-307 Failure code [CA1921] KDPF Soot Load High Error 1 .......................................................... 40-310 Failure code [CA1922] KDPF Soot Load High Error 2 .......................................................... 40-313 Failure code [CA1923] Dosing Fuel Valve 1 High Error ........................................................ 40-318 Failure code [CA1924] Dosing Fuel Valve 1 Low Error ......................................................... 40-320 Failure code [CA1925] Dosing Fuel Valve 1 In Range Error ................................................. 40-323 Failure code [CA1927] Dosing Fuel Press Sens High Error .................................................. 40-325 Failure code [CA1928] Dosing Fuel Press Sens Low Error................................................... 40-327 Failure code [CA1942] Crankcase Press Sens In Range Error ............................................. 40-329 Failure code [CA1963] Dosing Fuel Valve 1 Servo Error ...................................................... 40-330 Failure code [CA1977] Fuel Doser Open/Short Error ........................................................... 40-332 Failure code [CA1993] KDPF Delta Pressure Low Error ...................................................... 40-334 WA500-7 00-7

00 Index and foreword Index Failure code [CA2185] Throt Sensor Sup Volt High Error ..................................................... 40-337 Failure code [CA2186] Throt Sensor Sup Volt Low Error ...................................................... 40-339 Failure code [CA2249] Rail Press Very Low Error ............................................................... 40-341 Failure code [CA2265] Fuel Feed Pump Open Error ............................................................ 40-342 Failure code [CA2266] Fuel Feed Pump Short Error ............................................................ 40-344 Failure code [CA2271] EGR Valve Pos Sens High Error ...................................................... 40-346 Failure code [CA2272] EGR Valve Pos Sens Low Error ....................................................... 40-348 Failure code [CA2349] EGR Valve Solenoid Open Error ...................................................... 40-350 Failure code [CA2353] EGR Valve Solenoid Short Error ...................................................... 40-352 Failure code [CA2357] EGR Valve Servo Error ................................................................... 40-354 Failure code [CA2381] KVGT Pos Sens High Error ............................................................. 40-355 Failure code [CA2382] KVGT Pos Sens Low Error .............................................................. 40-357 Failure code [CA2383] KVGT Solenoid Open Error ............................................................. 40-359 Failure code [CA2386] KVGT Solenoid Short Error ............................................................. 40-361 Failure code [CA2387] KVGT Servo Error .......................................................................... 40-363 Failure code [CA2555] Grid Htr Relay Volt Low Error ........................................................... 40-364 Failure code [CA2556] Grid Htr Relay Volt High Error .......................................................... 40-366 Failure code [CA2637] KDOC Face Plugging ..................................................................... 40-368 Failure code [CA2639] Manual Stationary Regeneration Request......................................... 40-370 Failure code [CA2732] Dosing Fuel Valve 2 High Error ........................................................ 40-373 Failure code [CA2733] Dosing Fuel Valve 2 Low Error ......................................................... 40-375 Failure code [CA2741] Dosing Fuel Valve Swap Error ......................................................... 40-377 Failure code [CA2765] Inj Trim Data Error .......................................................................... 40-379 Failure code [CA2878] Dosing Fuel Valve 2 Servo Error ...................................................... 40-380 Failure code [CA2881] Dosing Fuel Pressure Low Error 1.................................................... 40-383 Failure code [CA3133] KDPF Outlet Press Sens High Error ................................................. 40-388 Failure code [CA3134] KDPF Outlet Press Sens Low Error .................................................. 40-390 Failure code [CA3135] KDPF Outlet Press Sens In Range Error .......................................... 40-392 Failure code [CA3167] Fuel Doser Degradation .................................................................. 40-395 Failure code [CA3251] KDOC Inlet Temp High Error ............................................................ 40-398 Failure code [CA3253] KDOC Temp Error - Non Regeneration ............................................. 40-401 Failure code [CA3254] KDOC Outlet Temp High Error 1 ...................................................... 40-404 Failure code [CA3255] KDPF Temp Error - Non Regeneration.............................................. 40-407 Failure code [CA3256] KDPF Outlet Temp High Error 1 ....................................................... 40-411 Failure code [CA3311] KDOC Outlet Temp High Error 2....................................................... 40-414 Failure code [CA3312] KDPF Outlet Temp High Error 2 ....................................................... 40-417 Failure code [CA3313] KDOC Inlet Temp Sensor Low Error ................................................. 40-420 Failure code [CA3314] KDOC Inlet Temp Sens High Error ................................................... 40-423 Failure code [CA3315] KDOC Inlet Temp Sens In Range Error ............................................. 40-426 Failure code [CA3316] KDOC Outlet Temp Sens Low Error ................................................. 40-430 Failure code [CA3317] KDOC Outlet Temp Sens High Error ................................................. 40-433 Failure code [CA3318] KDOC Outlet Temp Sens In Range Error .......................................... 40-436 Failure code [CA3319] KDPF Outlet Temp Sens High Error ................................................. 40-439 Failure code [CA3321] KDPF Outlet Temp Sens Low Error .................................................. 40-442 Failure code [CA3322] KDPF Outlet Temp Sens In Range Error ........................................... 40-444 Failure code [CA3419] Mass Air Flow Sensor Sup Volt High Error ........................................ 40-447 Failure code [CA3421] Mass Air Flow Sensor Sup Volt Low Error ......................................... 40-449 Failure code [D160KA] Disconnection of Backup Lamp Relay Output ................................... 40-451 Failure code [D160KB] Ground Fault of Backup Lamp Relay Output ..................................... 40-453 Failure code [D160KY] Hot Short of Backup Lamp Relay Output .......................................... 40-455 Failure code [D191KA] Disconnection of Neutral Output Relay............................................. 40-457 Failure code [D191KB] Ground Fault of Neutral Output Relay .............................................. 40-459 Failure code [D191KY] Hot Short of Neutral Output Relay.................................................... 40-461 Failure code [D192KA] Disconnection of ECSS Solenoid..................................................... 40-463 Failure code [D192KB] Ground Fault of ECSS Solenoid ...................................................... 40-465 Failure code [D192KY] Hot Short of ECSS Solenoid ........................................................... 40-467 Failure code [D193KA] Disconnection of J/S Solenoid Cut Relay.......................................... 40-468 Failure code [D193KB] Ground Fault of J/S Solenoid Cut Relay ........................................... 40-470 Failure code [D193KY] Hot Short of J/S Solenoid Cut Relay ................................................ 40-472 00-8 WA500-7

Komatsu WA500-7 Wheel Loader Service Repair Manual (SN:10001 and up)

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