Table Of Contents - Kubota WG1605-E3 Diagnostic Manual

1. OUTLINE ....................................................................................................................................... 1-1
[1] OVERALL DIAGONOSTIC PROCEDURE .............................................................................. 1-1
[2] QUESTIONING ....................................................................................................................... 1-2
[3] ABBREVIATIONS.................................................................................................................... 1-5
2. SYMPTOM CHARTS BY COMPONENTS .................................................................................... 1-9
[1] GASOLINE SYMPTOM CHARTS ........................................................................................... 1-9
[2] LPG / NATURAL GAS SYMPTOM CHARTS ........................................................................ 1-18
3. SET UP AND PROCEDURE DIAGNOSTIC TOOL ..................................................................... 1-28
[1] DIAGNOSTIC CONNECTOR POSITION .............................................................................. 1-28
[2] DIAGNOSTIC TOOL CONNECTION PROCEDURE ............................................................ 1-29
[3] SET UP AND PROCEDURE ................................................................................................. 1-30
(1) Overview.......................................................................................................................... 1-30
(2) Using the GCP Diagnostic Display Tool .......................................................................... 1-30
[4] DIAGNOSTIC TESTS............................................................................................................ 1-38
4. BASIC SYSTEM INFORMATION ................................................................................................ 1-42
[1] FUEL SYSTEM...................................................................................................................... 1-42
[2] Electrical System ................................................................................................................... 1-59
(1) System Wiring Diagram................................................................................................... 1-60
(2) ECU Terminal Layout ...................................................................................................... 1-72
(3) Connector Views ............................................................................................................. 1-74
(4) Repair of Wiring Harness ................................................................................................ 1-86
5. DIAGNOSIS................................................................................................................................. 1-89
[1] FUEL SYSTEM CHECKS...................................................................................................... 1-89
[2] FUEL SYSTEM DIAGNOSIS................................................................................................. 1-93
(1) Restricted Exhaust System Diagnosis........................................................................... 1-101
[3] DTC LIST............................................................................................................................. 1-102
[4] Diagnosis Procedure by DTC .............................................................................................. 1-123
(1) Crank/Cam Sensors (DTC 16, 336, 337, 341, 342) ...................................................... 1-123
(2) FP (Fuel Pressure Sensor) (DTC 87, 88, 91, 92) .......................................................... 1-130
(3) MAP (Manifold Absolute Pressure Sensor) (DTC 107, 108) ......................................... 1-136
(4) IAT (Intake Air Temperature Sensor) (DTC 111, 112, 113, 127, 129)........................... 1-139
(5) ECT (Engine Coolant Temperature) (DTC 116, 117, 118, 217) .................................... 1-144
(6) TPS (Throttle Position Sensor) (DTC 121 to 123, 221 to 223, 2111, 2112, 2135) ........ 1-149
(7) EGO Sensors ((Exhaust Gas Oxygen) Sensors) (DTC 134, 154)................................. 1-160
(8) Adaptive Learn (DTC 171, 172, 1161 to 1164).............................................................. 1-164
(9) Fuel Temp (Fuel Temperature Sensor) (DTC 182, 183, 187) ....................................... 1-169
(10)Engine Speed (DTC 219, 1111, 1112) .......................................................................... 1-174
(11)Injectors (DTC 261, 262, 264, 265, 267, 268, 270, 271) ............................................... 1-176
(12)Knock Sensor (DTC 326, 327) ...................................................................................... 1-179
(13)Catalyst Monitor (DTC 420, 1165, 1166) ...................................................................... 1-182
(14)Oil Pressure Sensor (DTC 524) .................................................................................... 1-183
(15)Battery Voltage (DTC 562, 563) .................................................................................... 1-185
(16)Internal Processor Diagnostics (DTC 601, 604, 606, 1612 to 1616, 1673)................... 1-188
(17)Fuel Pump Relay Control/Coil (DTC 627 to 629) .......................................................... 1-199
(18)5 V External (DTC 642, 643, 652, 653, 1611) ............................................................... 1-204
(19)Power Relay Control / Coil (DTC 686, 687) .................................................................. 1-209
(20)Closed Loop (DTC 1151 to 1156) ................................................................................. 1-212
(21)EPR (HD EPR) or CFV (DTC 1171 to 1177)................................................................. 1-215
(22)FPP (Foot Pedal Position Switch) (DTC 1121, 2121, 2126, 2122, 2123, 2127, 2128) . 1-220
SERVICING
Contents
KiSC issued 12, 2016 A