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Komatsu HD785-7 Shop Manual page 16

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SEN01276-12
Failure code [DUM7KZ] Pre-lubrication operation lamp output abnormality:
Disconnection or grounding fault ............................................................................................. 34
Failure code [DV00KB] Buzzer output: Short circuit.................................................................... 36
Failure code [DW2AKA] Main pressure variable valve output: Disconnection ............................ 38
Failure code [DW2AKB] Main pressure variable valve output circuit: Ground fault .................... 40
Failure code [DW2AKY] Main pressure variable valve output circuit: Hot short.......................... 42
Failure code [DW2AL1] Main pressure variable valve: Defective reset ...................................... 44
Failure code [DW2ALH] Main pressure variable valve: Malfunction ........................................... 46
Failure code [DW2BKA] Main oil level selector valve output: Disconnection .............................. 47
Failure code [DW2BKB] Main oil level selector valve output circuit: Ground fault ...................... 48
Failure code [DW2BKY] Main oil level selector valve output circuit: Hot short............................ 50
Failure code [DW2BL1] Main oil level selector valve: Defective reset ........................................ 52
Failure code [DW2BLH] Main oil level selector valve: Malfunction ............................................. 54
Failure code [DW2CKA] Transmission lubrication variable valve output: Disconnection ............ 55
Failure code [DW2CKB] Transmission lubrication variable valve output circuit: Ground fault .... 56
Failure code [DW2CKY] Transmission lubrication variable valve output circuit: Hot short.......... 58
Failure code [DW2CL1] Transmission lubrication variable valve: Defective reset ...................... 60
Failure code [DW2CLH] Transmission lubrication variable valve: Malfunction ........................... 62
Failure code [DW35KZ] Failure in output system of auto suspension solenoid 1:
Disconnection or short circuit................................................................................................... 64
Failure code [DW36KZ] Failure in output system of auto suspension solenoid 2:
Disconnection or short circuit................................................................................................... 66
Failure code [DW71KZ] Exhaust brake output system trouble
(Disconection/Ground fault/Hot short) ..................................................................................... 68
Failure code [DW72KZ] Kick-out solenoid output system trouble:
Disconnection or short circuit................................................................................................... 70
Failure code [DW73KZ] Failure in hoist select valve output system:
Disconnection or short circuit................................................................................................... 72
Failure code [DW78KZ] Brake cooling valve (BCV) (rear wheel) output system trouble:
Disconnection or short circuit................................................................................................... 74
Failure code [DWNBK4] ASR shut-off valve: Trouble (Valve keeps operating)........................... 76
Failure code [DWNBKA] ASR shut-off valve output circuit: Disconnection ................................. 78
Failure code [DWNBKB] ASR shut-off valve output circuit: Ground fault.................................... 80
Failure code [DWNBKY] ASR shut-off valve output circuit: Short circuit..................................... 82
Failure code [DWNBMA] ASR shut-off valve: Trouble (Valve does not operate) ........................ 82
Failure code [DWNDKZ] Trouble in ABS cut-off valve (Front) system ........................................ 84
Failure code [DWNDMA] Defective ABS cut-off valve (Front)..................................................... 86
Failure code [DWNEKZ] Trouble in ABS cut-off valve (Rear) system ......................................... 88
Failure code [DWNEMA] Defective ABS cut-off valve (Rear) ..................................................... 90
Troubleshooting by failure code, Part 9
Failure code [DX11K4] Rear brake proportional pressure reducing solenoid valve:
Out of control ...........................................................................................................................
Failure code [DX11KA] Rear brake proportional pressure reducing solenoid valve output circuit:
Disconnection ..........................................................................................................................
Failure code [DX11KB] Rear brake proportional pressure reducing solenoid valve:
Short circuit..............................................................................................................................
Failure code [DX11KY] Rear brake proportional pressure reducing solenoid valve:
Short circuit to power source line.............................................................................................
Failure code [DX11MA] Rear brake proportional pressure reducing solenoid valve:
Malfunction .............................................................................................................................. 10
Failure code [DX12K4] Front brake proportional pressure reducing solenoid valve:
Out of control ........................................................................................................................... 12
Failure code [DX12KA] Front brake proportional pressure reducing solenoid valve output circuit:
Disconnection .......................................................................................................................... 14
Failure code [DX12KB] Front brake proportional pressure reducing solenoid valve:
Short circuit.............................................................................................................................. 15
Failure code [DX12KY] Front brake proportional pressure reducing solenoid valve:
Short circuit to power source line............................................................................................. 16
14
00 Index and foreword
SEN01946-02
4
6
7
8
HD785-7

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