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00 Index and foreword
Index
E-17 Headlamp, clearance lamp, tail lamp or license-plate lamp does not light up or does not go out
.................................................................................................................................................. 40-564
E-18 Working lamp does not light up or does not go out................................................................. 40-573
E-19 Turn signal and hazard lamp do not light up or do not go out................................................. 40-578
E-20 Stop lamp does not light up or remains lighting up ................................................................. 40-585
E-21 Backup lamp does not light up or remains lighting up ............................................................ 40-588
E-22 Backup alarm does not sound or does not stop sounding ...................................................... 40-591
E-23 Horn does not sound or does not stop sounding .................................................................... 40-593
E-24 Alarm buzzer does not sound or does not stop sounding....................................................... 40-596
E-25 KOMTRAX system does not operate normally ....................................................................... 40-598
E-26 Fuel gauge does not indicate correct level ............................................................................. 40-600
E-27 Seat belt caution lamp indication is incorrect.......................................................................... 40-602
Troubleshooting for hydraulic and mechanical system (H-mode) ....................................................... 40-603
Information described in troubleshooting table (H-mode)................................................................ 40-603
System chart of hydraulic and mechanical systems........................................................................ 40-604
Failure mode and cause table ......................................................................................................... 40-606
H-1 Machine travels neither forward nor in reverse......................................................................... 40-612
H-2 Machine does not travel forward (normally travels in reverse) ................................................. 40-614
H-3 Machine does not travel in reverse (normally travels forward) ................................................. 40-615
H-4 Both forward and reverse travel speeds are low ...................................................................... 40-616
H-5 Forward travel speed is low (normal when traveling in reverse)............................................... 40-618
H-6 Reverse travel speed is low (normal when traveling forward) .................................................. 40-619
H-7 Machine lacks power when traveling both forward and in reverse ........................................... 40-620
H-8 Machine lacks power when traveling forward (normal when traveling in reverse).................... 40-622
H-9 Machine lacks power when traveling in reverse (normal when traveling forward).................... 40-623
H-10 Engine stalls during travel or engine speed drops significantly .............................................. 40-624
H-11 Machine does not turn ............................................................................................................ 40-625
H-12 Steering wheel is heavy to turn............................................................................................... 40-627
H-13 Machine sways or large shocks are made while machine turns............................................. 40-628
H-14 Machine turns to either side unintentionally during traveling .................................................. 40-629
H-15 Brake does not work or it is weak ........................................................................................... 40-630
H-16 Brake is not released or drags................................................................................................ 40-631
H-17 Parking brake does not work or it is weak .............................................................................. 40-632
H-18 Parking brake is not released or drags ................................................................................... 40-633
H-19 Boom does not rise................................................................................................................. 40-634
H-20 Boom moves slow or lacks lifting force................................................................................... 40-635
H-21 Boom rising speed lowers at certain height ............................................................................ 40-636
H-22 Lift cylinder cannot hold down bucket (bucket rises off ground) ............................................. 40-637
H-23 Hydraulic drift of boom is large ............................................................................................... 40-638
H-24 Boom wobbles during operation ............................................................................................. 40-642
H-25 Bucket does not tilt back......................................................................................................... 40-643
H-26 Bucket moves slow or lacks tilting back force......................................................................... 40-644
H-27 Bucket speed lowers in tilt-back motion.................................................................................. 40-645
H-28 Bucket cylinder cannot hold down bucket (bucket rises off ground)....................................... 40-646
H-29 Hydraulic drift of bucket is large.............................................................................................. 40-647
H-30 Loaded bucket wobbles during travel (with work equipment valve at "HOLD") ...................... 40-648
H-31 Boom and bucket control levers do not move smoothly and are heavy to move.................... 40-649
H-32 Engine speed lowers remarkably or engine stalls while work equipment is operated ............ 40-650
H-33 Large shock is made when work equipment starts and stops ................................................ 40-651
H-34 When certain work equipment is relieved hydraulically, other work equipment moves .......... 40-652
H-35 ECSS does not operate and machine pitches and bounds .................................................... 40-653
H-36 Fan speed is abnormal (too high or low, or fan does not rotate) ............................................ 40-654
H-37 Unusual noise is heard from around fan................................................................................. 40-656
Troubleshooting of engine (S-mode)................................................................................................... 40-657
Information mentioned in troubleshooting table (S mode)............................................................... 40-657
S-1 Engine does not crank when starting switch is turned to START position................................ 40-658
00-10
WA200-7
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