Komatsu WA430-6 Shop Manual page 15

00 Index and foreword
Failure code [DY30ME] Emergency steering: Operating for more than 1 minute ................... 52
Troubleshooting of electrical system (E-mode)
Installing positions of fuses......................................................................................................
Information in troubleshooting table ........................................................................................
E-1 Engine does not start ........................................................................................................
E-2 Wiper does not operate..................................................................................................... 14
E-3 Windshield washer does not operate................................................................................ 18
E-4 Headlamp, clearance lamp, tail lamp, and license lamp do not light up or go off ............. 21
E-5 Working lamp does not light up or go off........................................................................... 29
E-6 Turn signal lamp and hazard lamp do not light up or go off .............................................. 34
E-7 Brake lamp does not light or it keeps lighting up .............................................................. 40
E-8 Backup lamp does not light or it keeps lighting up ............................................................ 42
E-9 Backup buzzer does not sound or it keeps sounding ....................................................... 44
E-10 Horn does not sound or it keeps sounding ..................................................................... 46
E-11 Alarm buzzer does not sound or it keeps sounding ........................................................ 48
E-12 Air conditioner does not operate or stop ......................................................................... 50
E-13 The KOMTRAX system does not work properly ............................................................. 53
E-14 When kick-down switch is turned ON, kick-down operation does not start..................... 56
E-15 When hold switch is pressed, holding operation does not start ...................................... 58
E-16 Transmission is kept in neutral, or brake drags
when directional lever is operated while parking brake is applied.......................
E-17 Transmission cut-off mode cannot be set or reset .......................................................... 62
E-18 Transmission cut-off set cannot be reset ........................................................................ 64
E-19 FNR switch mode cannot be set or reset........................................................................ 66
E-20 Fan reverse function cannot be used or reset ................................................................ 68
E-21 Discharge from loader pump does not rise from minimum level ..................................... 70
E-22 ECSS function cannot be used or reset.......................................................................... 72
E-23 When parking brake is turned ON, parking brake indicator lamp does not light up ........ 74
E-24 When emergency brake operates, brake oil pressure caution lamp does not operate... 78
E-25 Air cleaner clogging indicator lamp does not light up...................................................... 80
E-26 Radiator coolant level caution lamp does not light up..................................................... 82
E-27 Hydraulic oil temperature gauge does not rise and
hydraulic oil temperature caution lamp does not light up ....................................
E-28 Torque converter oil temperature gauge does not rise and
torque converter oil temperature caution lamp does not light up ........................
E-29 Steering oil pressure caution lamp does not light up ...................................................... 86
E-30 Abnormality in t switch (panel switch 1) input ............................................................... 88
E-31 Abnormality in U switch (panel switch 2) input .............................................................. 90
E-32 Abnormality in < switch (panel switch 3) input ................................................................ 92
E-33 Abnormality in > switch (panel switch 4) input ................................................................ 94
E-34 Air conditioner does not operate ..................................................................................... 96
E-35 Air is not cooled .............................................................................................................. 100
E-36 No air comes out or air flow is abnormal......................................................................... 104
E-37 Temperature cannot be controlled .................................................................................. 110
E-38 Spurting out mode cannot be switched ........................................................................... 114
E-39 Recirc/Fresh cannot be changed over ............................................................................ 118
Troubleshooting of hydraulic and mechanical system (H-mode)
Method of using troubleshooting chart ....................................................................................
Table of failure modes and causes ..........................................................................................
H-1 The machine does not start .............................................................................................. 10
H-2 Torque converter lockup is not switched off (engine stalls)
[Machine with lockup clutch (if equipped)]...........................................................
H-3 Torque converter lockup is not switched on [Machine with lockup clutch (if equipped)] ... 13
H-4 The travel speed is slow, the thrusting force is weak,
the uphill traveling power is weak, and the gear is not shifted ............................
H-5 Shocks are large at the times of starting and shifting gear ............................................... 16
H-6 Time lag is large at the times of starting and shifting gear................................................ 18
H-7 The torque converter oil temperature is high .................................................................... 20
WA430-6
SEN00832-16
SEN01748-04
3
6
8
60
83
84
SEN01749-04
3
6
12
14
13