Komatsu 70001 Shop Manual page 10

SEN02225-15
Failure code [DW43KB] Travel Speed Sol. Short Circuit............................................................. 22
Failure code [DW45KA] Swing Brake Sol. Open Circuit ............................................................. 24
Failure code [DW45KB] Swing Brake Sol. Short Circuit.............................................................. 26
Failure code [DW91KA] Travel Junction Sol. Open Circuit ......................................................... 28
Failure code [DW91KB] Travel Junction Sol. Short Circuit.......................................................... 30
Failure code [DWA2KA] Service Sol Discon ............................................................................... 32
Failure code [DWA2KB] Service Sol Short.................................................................................. 33
Failure code [DWJ0KA] Merge-divider Sol. Open Circuit............................................................ 34
Failure code [DWJ0KB] Merge-divider Sol. Short Circuit ............................................................ 36
Failure code [DWK0KA] 2-stage Relief Sol Discon ..................................................................... 38
Failure code [DWK0KB] 2-stage Relief Sol Short ....................................................................... 40
Failure code [DXA0KA] PC-EPC Sol. Open Circuit..................................................................... 42
Failure code [DXA0KB] PC-EPC Sol. Short Circuit..................................................................... 44
Failure code [DXE0KA] LS-EPC Sol Discon ............................................................................... 46
Failure code [DXE0KB] LS-EPC Sol Short.................................................................................. 48
Failure code [DXE4KA] Service current EPC discon .................................................................. 50
Failure code [DXE4KB] Service current EPC short..................................................................... 51
Failure code [DY20KA] Wiper working abnormality .................................................................... 52
Failure code [DY20MA] Wiper parking abnormality .................................................................... 54
Failure code [DY2CKA] Washer Drive Discon............................................................................. 56
Failure code [DY2CKB] Washer Drive Short Circuit.................................................................... 58
Failure code [DY2DKB] Wiper drive (for) short ........................................................................... 60
Failure code [DY2EKB] Wiper drive (rev) short........................................................................... 62
Troubleshooting of electrical system (E-mode)
Before carrying out troubleshooting of electrical system.............................................................
Information contained in troubleshooting table............................................................................
E-1 Engine does not start............................................................................................................
E-2 Auto-decelerator does not operate ....................................................................................... 10
E-3 Automatic warming-up system does not operate.................................................................. 12
E-4 Preheater does not operate .................................................................................................. 14
E-5 All work equipment, swing, and travel mechanism do not move .......................................... 16
E-6 Power maximizing function does not operate ....................................................................... 18
E-7 Machine monitor does not display at all................................................................................ 20
E-8 Machine monitor does not display some items..................................................................... 22
E-9 Contents of display by machine monitor are different from applicable machine................... 22
E-10 Fuel level monitor was lighted in red while engine running ................................................ 23
E-11 Engine coolant temperature gauge does not indicate normally .......................................... 24
E-12 Hydraulic oil temperature gauge does not indicate normally .............................................. 26
E-13 Fuel level gauge does not indicate normally....................................................................... 27
E-14 Swing lock monitor does not indicate normally................................................................... 28
E-15 When monitor switch is operated, monitor displays nothing............................................... 30
E-16 Windshield wiper and window washer do not operate........................................................ 32
E-17 Machine push-up function does not operate normally ........................................................ 36
E-18 Monitoring function fails to display "boom raise" normally .................................................. 38
E-19 Monitoring function fails to display "boom lower" normally ................................................. 40
E-20 Monitoring function fails to display "arm IN" normally ......................................................... 42
E-21 Monitoring function fails to display "arm OUT" normally ..................................................... 44
E-22 Monitoring function fails to display "bucket CURL" normally .............................................. 46
E-23 Monitoring function fails to display "bucket DUMP" normally.............................................. 48
E-24 Monitoring function fails to display "swing" normally........................................................... 50
E-25 Monitoring function fails to display "travel" normally ........................................................... 52
E-26 Monitoring function fails to display "travel differential pressure" normally .......................... 54
E-27 Monitoring function fails to display "service" normally ........................................................ 56
E-28 KOMTRAX system does not operate normally ................................................................... 58
E-29 Air conditioner does not operate......................................................................................... 60
E-30 Travel alarm does not sound or does not stop sounding .................................................... 62
E-31 Horn does not sound .......................................................................................................... 64
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00 Index and foreword
SEN02651-03
4
6
7
PC400, 450-8