Komatsu PC88MR-10 Shop Manual page 493

Failure code [DXEAKY] Service Current EPC5 Hot Short Circuit .......................................... 40-366
Failure code [DY20KA] Wiper Motor Open Circuit ............................................................... 40-368
Failure code [DY20MA] Wiper Motor Defective Function...................................................... 40-370
Failure code [DY2CKB] Washer Motor Short Circuit ............................................................ 40-372
Failure code [DY2DKB] Wiper Motor (Normal) Short Circuit ................................................. 40-374
Failure code [DY2EKB] Wiper Motor (Reverse) Short Circuit................................................ 40-376
Troubleshooting of electrical system (E-mode) .......................................................................... 40-378
E-1 Engine does not start (Engine does not crank) .............................................................. 40-378
E-2 Manual preheating system does not work..................................................................... 40-384
E-3 While preheating is working, preheating monitor does not light up .................................. 40-387
E-4 When starting switch is turned to ON position, machine monitor displays nothing............. 40-389
E-5 Engine coolant temperature monitor lights up in white while engine is running ................. 40-392
E-6 Hydraulic oil temperature monitor lights up in white while engine is running ..................... 40-393
E-7 Charge level monitor lights up while engine is running ................................................... 40-394
E-8 Fuel level monitor lights up in red while engine is running .............................................. 40-395
E-9 Engine coolant temperature monitor lights up in red while engine is running .................... 40-396
E-10 Hydraulic oil temperature monitor lights up in red while engine is running ...................... 40-397
E-11 Engine oil pressure monitor lights up in red while engine is running............................... 40-398
E-12 Fuel gauge display does not move from minimum or maximum .................................... 40-399
E-13 Fuel gauge indicates incorrect amount (indicates neither full nor empty)........................ 40-400
E-14 Engine coolant temperature gauge display does not move from minimum or
maximum ........................................................................................................... 40-401
E-15 Engine coolant temperature gauge indicates incorrect temperature (indicates neither full
nor empty).......................................................................................................... 40-402
E-16 Hydraulic oil temperature gauge does not move from minimum or maximum ................. 40-403
E-17 Hydraulic oil temperature gauge indicates incorrect temperature (indicates neither full nor
empty) ............................................................................................................... 40-405
E-18 Some areas of machine monitor screen are not displayed............................................ 40-406
E-19 Function switch does not work................................................................................... 40-407
E-20 Automatic warm-up system does not operate (in cold season)...................................... 40-408
E-21 Auto-deceleration monitor does not light up, or does not go out, while auto-deceleration
switch is operated ............................................................................................... 40-409
E-22 Auto-deceleration function does not operate or is not canceled while lever is
operated ............................................................................................................ 40-410
E-23 Working mode selection screen is not displayed while working mode selector switch is
operated ............................................................................................................ 40-412
E-24 Setting of engine and hydraulic pump is not changed while working mode is
changed............................................................................................................. 40-413
E-25 Travel speed monitor does not change when travel speed switch is operated ................ 40-414
E-26 Travel speed does not change while travel speed selection is changed......................... 40-415
E-27 Alarm buzzer does not stop sounding......................................................................... 40-416
E-28 Service meter is not displayed, while starting switch is in OFF position.......................... 40-417
E-29 Service mode cannot be selected .............................................................................. 40-418
E-30 Any of work equipment, swing and travel does not work............................................... 40-419
E-31 Any of work equipment, swing and travel cannot be locked .......................................... 40-421
E-32 Upper structure does not swing while swing parking brake cancel switch is set to
CANCEL position................................................................................................ 40-423
E-33 Swing brake does not operate while swing parking brake cancel switch is set to NORMAL
position .............................................................................................................. 40-425
E-34 Work equipment does not operate while lock lever automatic release switch is in release
position .............................................................................................................. 40-427
E-35 Alarm does not sound during travel ............................................................................ 40-429
E-36 Alarm does not stop sounding while machine is stopped.............................................. 40-430
E-37 Horn does not sound ................................................................................................ 40-431
E-38 Horn does not stop sounding..................................................................................... 40-433
E-39 Wiper monitor does not light up, or does not go out, while wiper switch is
operated ............................................................................................................ 40-434
E-40 Wiper does not operate while wiper switch is operated ................................................ 40-435
E-41 Window washer does not operate while window washer switch is operated ................... 40-437
PC88MR-10
40 Troubleshooting
Table of contents
40-5