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Komatsu A12001 Shop Manual page 5

Hydraulic excavator

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00 INDEX AND FOREWORD
ELECTRICAL SYSTEM TROUBLESHOOTING - PREPARATION ................................................. 40-54
PROCEDURE FOR TESTING AND TROUBLESHOOTING .......................................................... 40-64
SYMPTOMS OF FAILURE AND TROUBLESHOOTING NUMBERS ............................................. 40-67
INFORMATION IN TROUBLESHOOTING TABLE ......................................................................... 40-71
TROUBLESHOOTING METHOD FOR OPEN CIRCUIT IN WIRING HARNESS OF PRESSURE SEN-
SOR SYSTEM............................................................................................................................ 40-73
CONNECTOR LIST AND LAYOUT ................................................................................................ 40-76
CONNECTOR PIN NUMBERS - CONNECTION TABLE................................................................ 40-89
T-BOXES AND T-ADAPTERS LIST ..............................................................................................40-129
FUSE LOCATION TABLE .............................................................................................................40-135
PRECAUTIONS FOR KDPF (KCSF, KDOC) CLEANING AND CHANGE .....................................40-137
PREPARATION OF SHORT CIRCUIT ELECTRICAL CONNECTOR (FOR FAILURE CODES [CA1883]
AND [CA3135])..........................................................................................................................40-141
FAILURE CODES TABLE .............................................................................................................40-143
TROUBLESHOOTING BY FAILURE CODE (DISPLAY OF CODE) .....................................................40-160
FAILURE CODE [879AKA] A/C Recirculation Air Temperature Sensor Open Circuit.....................40-160
FAILURE CODE [879AKB] A/C Recirculation Air Temperature Sensor Short Circuit .....................40-161
FAILURE CODE [879BKA] A/C Fresh Air Temperature Sensor Open Circuit ................................40-162
FAILURE CODE [879BKB] A/C Fresh Air Temperature Sensor Short Circuit ................................40-164
FAILURE CODE [879CKA] Ventilating Sensor Open Circuit..........................................................40-166
FAILURE CODE [879CKB] Ventilating Sensor Short Circuit..........................................................40-167
FAILURE CODE [879DKZ] Sunlight Sensor Open Circuit or Short Circuit.....................................40-168
FAILURE CODE [879EMC] Ventilation Damper Malfunction .........................................................40-170
FAILURE CODE [879FMC] Air Mix Damper Malfunction ...............................................................40-171
FAILURE CODE [879GKX] Refrigerant Pressure Input Signal Out of Range ................................40-172
FAILURE CODE [989L00] Engine Controller Lock Caution 1 ........................................................40-174
FAILURE CODE [989M00] Engine Controller Lock Caution 2 .......................................................40-175
FAILURE CODE [989N00] Engine Controller Lock Caution 3........................................................40-176
FAILURE CODE [A1U0N3] HC Desorb Request 1 ........................................................................40-177
FAILURE CODE [A1U0N4] HC Desorb Request 2 ........................................................................40-179
FAILURE CODE [A900FR] Abrupt Engine Stop by Auto Idling Stop 3...........................................40-181
FAILURE CODE [A900N6] Abrupt Engine Stop by Auto Idling Stop 1...........................................40-182
FAILURE CODE [A900NY] Abrupt Engine Stop by Auto Idling Stop 2 ..........................................40-183
FAILURE CODE [AA10NX] Air Cleaner Clogging..........................................................................40-184
FAILURE CODE [AB00KE] Charge Voltage Low...........................................................................40-186
FAILURE CODE [AQ10N3] Manual Stationary Regeneration Request (KDOC Face Plugging) ....40-189
FAILURE CODE [AS00N3] Manual Stationary Regeneration Request (SCR) ...............................40-191
FAILURE CODE [AS00R2] Warning 2 (SCR Device Abnormality) ................................................40-193
FAILURE CODE [AS00R3] Inducement 1 (SCR Device Abnormality) ...........................................40-194
FAILURE CODE [AS00R4] Inducement 2 (SCR Device Abnormality) ...........................................40-195
FAILURE CODE [AS00R5] Inducement 3 (SCR Device Abnormality) ...........................................40-196
FAILURE CODE [AS00R6] Temporary Recovery of Inducement...................................................40-197
FAILURE CODE [AS00ZK] AdBlue/DEF Level Low Error 5...........................................................40-198
FAILURE CODE [AS10KM] AdBlue/DEF Injector Overheat Warning ............................................40-199
FAILURE CODE [AS10NR] AdBlue/DEF Injector High Temperature Warning ...............................40-200
FAILURE CODE [AS10NT] AdBlue/DEF Injector Overheat Caution..............................................40-201
FAILURE CODE [B@BAZG] Engine Oil Pressure Low .................................................................40-202
FAILURE CODE [B@BAZK] Eng Oil Level Low ............................................................................40-203
FAILURE CODE [B@BCNS] Eng Water Overheat ........................................................................40-205
FAILURE CODE [B@BCZK] Eng Water Level Low .......................................................................40-206
FAILURE CODE [B@HANS] Hyd Oil Overheat .............................................................................40-208
FAILURE CODE [CA115] Engine NE and Backup Speed Sensor Error.........................................40-209
FAILURE CODE [CA122] Charge Air Pressure Sensor High Error................................................40-210
FAILURE CODE [CA123] Charge Air Pressure Sensor Low Error.................................................40-212
FAILURE CODE [CA131] Throttle Sensor High Error....................................................................40-214
FAILURE CODE [CA132] Throttle Sensor Low Error.....................................................................40-216
FAILURE CODE [CA144] Coolant Temperature Sensor High Error...............................................40-218
FAILURE CODE [CA145] Coolant Temperature Sensor Low Error................................................40-220
PC210LC-11
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INDEX
00-5

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