SEN00422-13 00 Index and foreword
8PC270, 270LC-8
Troubleshooting by failure code (Display of code), Part 4 SEN00649-04
Failure code [DXA8KA] PC-EPC (F) Sol Discon ..................................................................... 2
Failure code [DXA8KB] PC-EPC (F) Sol Short........................................................................ 4
Failure code [DXA9KA] PC-EPC (R) Sol Discon ..................................................................... 6
Failure code [DXA9KB] PC-EPC (R) Sol Short ....................................................................... 8
Failure code [DXE0KA] LS-EPC Sol Discon............................................................................ 10
Failure code [DXE0KB] LS-EPC Sol Short .............................................................................. 12
Failure code [DXE4KA] Service Current EPC Discon ............................................................. 14
Failure code [DXE4KB] Service Current EPC Short................................................................ 16
Failure code [DXE5KA] Merge-divider Main Sol Discon.......................................................... 18
Failure code [DXE5KB] Merge-divider Main Sol Short ............................................................ 20
Failure code [DXE6KA] Merge-divider LS Sol Discon ............................................................. 22
Failure code [DXE6KB] Merge-divider LS Sol Short................................................................ 24
Failure code [DY20KA] Wiper Working Abnormality................................................................ 26
Failure code [DY20MA] Wiper Parking Abnormality ................................................................ 28
Failure code [DY2CKA] Washer Drive Discon ......................................................................... 30
Failure code [DY2CKB] Washer Drive Short ........................................................................... 32
Failure code [DY2DKB] Wiper Drive (For) Short ..................................................................... 34
Failure code [DY2EKB] Wiper Drive (Rev) Short..................................................................... 36
Troubleshooting of electrical system (E-mode) SEN00650-04
Before carrying out troubleshooting of electrical system ......................................................... 3
Information in troubleshooting table......................................................................................... 5
E-1 When starting switch turned ON, machine monitor displays nothing ................................ 6
E-2 When starting switch turned ON (before starting engine), basic check item lights up ...... 8
E-3 Engine does not start (Engine does not crank) ................................................................. 11
E-4 Preheater does not operate .............................................................................................. 15
E-5 Automatic warm-up system does not operate (in cold season) ........................................ 19
E-6 All work equipment, swing, and travel mechanism do not move or cannot be locked ...... 20
E-7 Precaution lights up while engine is running ..................................................................... 22
E-8 Emergency stop item lights up while engine is running .................................................... 27
E-9 Engine coolant temperature gauge does not indicate normally ........................................ 28
E-10 Hydraulic oil temperature gauge does not indicate correctly .......................................... 29
E-11 Fuel level gauge does not indicate correctly ................................................................... 32
E-12 Contents of display by machine monitor are different from applicable machine ............. 34
E-13 Machine monitor does not display some items ............................................................... 34
E-14 Function switch does not work ........................................................................................ 34
E-15 Auto-decelerator does not operate normally ................................................................... 35
E-16 Working mode does not change ..................................................................................... 36
E-17 Travel speed does not change........................................................................................ 37
E-18 Alarm buzzer cannot be stopped .................................................................................... 38
E-19 Windshield wiper and window washer do not operate .................................................... 39
E-20 Power maximizing function does not operate normally................................................... 41
E-21 Swing holding brake does not operate normally ............................................................. 43
E-22 Travel alarm does not sound or does not stop sounding ................................................ 45
E-23 Air conditioner does not operate normally (including air conditioner abnormality record) 47
E-24 While starting switch is in OFF position, service meter is not displayed ......................... 59
E-25 Machine monitor cannot be set in service mode............................................................. 59
E-26 Monitoring function does not display lever control signal normally ................................. 60
E-27 KOMTRAX system does not operate normally ............................................................... 68
Troubleshooting of hydraulic and mechanical system (H-mode) SEN00651-03
System diagram of hydraulic and mechanical system............................................................. 4
Information in troubleshooting table......................................................................................... 6
H-1 Speed or power of whole work equipment, swing, and travel is low ................................. 7
H-2 Engine speed lowers extremely or engine stalls............................................................... 9
H-3 Work equipment, swing, and travel systems do not work ................................................. 10
H-4 Abnormal sound comes out from around hydraulic pump ................................................ 10
H-5 Auto-decelerator does not operate ................................................................................... 11
H-6 Fine control performance or response is low .................................................................... 11
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