Komatsu PC27MR-3 Shop Manual page 7

SEN04065-07
How to start operation of KOMTRAX terminal .............................................................................................. 76
Lamp display of KOMTRAX terminal ............................................................................................................ 80
Removal and installation of KOMTRAX terminal .......................................................................................... 83
Preparation work for troubleshooting of electrical system............................................................................. 84
40 Troubleshooting
010 Failure code table and fuse location
User code and failure code list......................................................................................................................
Fuse locations ...............................................................................................................................................
100 General information on troubleshooting
Points to remember when troubleshooting....................................................................................................
Sequence of events in troubleshooting .........................................................................................................
Checks before troubleshooting .....................................................................................................................
Classification and procedures of troubleshooting .........................................................................................
Information contained in troubleshooting table .............................................................................................
Connection table for connector pin numbers ................................................................................................ 10
T- branch box and T- branch adapter table ................................................................................................... 46
110 Troubleshooting by failure code
Failure code [DBHRKR] Communication error between monitor panel and attachment switch controller....
Failure code [DBH1KK] Unswitched power supply error...............................................................................
Failure code [DBH2KK] Solenoid power supply error ...................................................................................
Failure code [DBH5KP] 5V sensor power supply output 0 error ................................................................... 10
Failure code [DBH6KP] 5V sensor power supply output 1 error ................................................................... 11
Failure code [DDWLKA] Breaker switch error (Disconnection or short circuit) ............................................. 12
Failure code [DDWLKB] Breaker switch error (Hot short circuit) .................................................................. 13
Failure code [DFB1KA] Attachment switch (main) error (Disconnection or ground fault) ............................. 14
Failure code [DFB1KB] Attachment switch (main) error (Hot short circuit) ................................................... 16
Failure code [DFB3L8] Attachment switch (main-sub) voltage difference error ............................................ 17
Failure code [DK10KA] Fuel control dial potentiometer error (Disconnection or ground fault) ..................... 18
Failure code [DK10KB] Fuel control dial potentiometer error (Hot short circuit) ........................................... 20
Failure code [DK58KA] Governor stroke sensor error (Disconnection or ground fault) ................................ 22
Failure code [DK58KB] Governor stroke sensor error (Hot short circuit) ...................................................... 24
Failure code [D1E0KZ] Motor power supply relay error (Disconnection or hot short circuit) ........................ 26
Failure code [D1E0KB] Motor power supply relay error (Ground fault)......................................................... 28
Failure code [D1E1KZ] Motor drive relay (+) error (Disconnection or hot short circuit) ................................ 30
Failure code [D1E1KB] Motor drive relay (+) error (Ground fault)................................................................. 32
Failure code [D1E2KZ] Motor drive relay (-) error (Disconnection or hot short circuit) ................................. 34
Failure code [D1E2KB] Motor drive relay (-) error (Ground fault) ................................................................. 36
Failure code [DY10MA] Fuel control motor operation error .......................................................................... 38
Failure code [D1E0KA] Fuel control motor power supply relay contact sticking (NC side) ........................... 40
Failure code [D1E0KY] Fuel control motor power supply relay contact sticking (NO side)........................... 42
Failure code [DXEAKA] EPC valve (port A side) error (Disconnection)........................................................ 44
Failure code [DXEAKB] EPC valve (port B side) error (Ground fault)........................................................... 46
Failure code [DXEAKY] EPC valve (port A side) error (Hot short circuit) ..................................................... 47
200 Troubleshooting of electrical system (E-mode)
Before carrying out troubleshooting of electrical system...............................................................................
E-1 Engine does not start..............................................................................................................................
E-2 Engine does not stop.............................................................................................................................. 20
E-3 When starting switch is turned ON, any item does not operate.............................................................. 24
E-4 When starting switch is turned ON, some items do not operate............................................................. 28
E-5 Alarm buzzer is abnormal....................................................................................................................... 29
E-6 Engine oil pressure caution is turned ON ............................................................................................... 31
E-7 Charge level caution is turned ON.......................................................................................................... 32
E-8 Preheating system does not operate or preheater does not become hot............................................... 34
E-9 Coolant temperature gauge is abnormal ................................................................................................ 36
E-10 Fuel level gauge is abnormal................................................................................................................ 44
E-11 Service meter does not operate while engine is running ...................................................................... 52
6
00-100
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Table of contents
SEN05815-00
SEN04382-01
SEN05816-00
SEN04383-01
PC27MR-3, PC30MR-3, PC35MR-3
100 Index
2
3
2
3
4
5
6
4
6
8
2
4