Doosan G25P-5 Service Manual Page 291
- Page / 306
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
Rated. / 5. Based on customer reviews
G424F(FE) Service Manual 289 Appendix
Manual Override Screens 1 & 2
There are two manual override screens available for
the technician to test for failed components or to
isolate problems during troubleshooting. Manual
overrides can override normal system function
regardless of engine state. Active, suspected and
occurred faults are displayed on each override
screen for quick reference along with the ability to
clear all faults.
Manual Override Screen 1
Components that can be overridden on override
screen 1 include the Main Power Relay, LP fuel
Lock-off, Fuel Select Switch, Electric Fuel Pump (Bi-
Fuel Units), Fuel Trim Valves, O2 Sensor, and the
Cold Start Valve.
Figure 14. Manual Override Screen 1
CAUTION
Be aware of fuel flow and ignition when
performing any manual override of a system
component as engine damage may result.
- Service Manual 1
- Important Safety Information 3
- Chapter 4. ENGINE ELECTRICAL 6
- Chapter 5. ENGINE MANAGEMENT 6
- SYSTEM (EMS) 6
- Chapter 6. LPG FUEL DELIVERY 7
- Chapter 7. MPI GASOLINE FUEL 7
- DELIVERY SYSTEM 7
- Precautions before Service 9
- Replacement Part 10
- Rubber Parts 10
- Oil and Grease 10
- Genuine Part 10
- Electrical System 10
- Tightening Torque 12
- Recommended Lubricants 13
- Lubricant Capacities 13
- General Specification 15
- General Maintenance 18
- Engine Oil Classification 19
- Checking Engine Oil Level 20
- Checking Compressed Pressure 21
- Cooling System Maintenance 22
- Checking Belt for Damage 24
- Adjusting 24
- Ignition System Maintenance 25
- Inspection of Spark Plug 26
- Spark Plugs 27
- Fuel System Maintenance 28
- Exhaust System Maintenance 29
- Maintenance Schedule 30
- Technical Specifications 33
- Shells Selection Table 35
- Recommended Torque Values 38
- Engine Exploded View (2 of 2) 42
- Intake manifold and gasket 43
- Exhaust Manifold and Gasket 47
- Timing Belt 49
- Timing Belt Tensioner 53
- PCV Valve 54
- Crankcase Ventilation 55
- Service Procedure 56
- Crankshaft Timing Pulley 57
- Crankshaft Front Seal 58
- Camshaft Case Cover and 59
- Crankshaft Accessory Pulley 59
- Timing Belt Rear Cover 60
- Rocker Arms, Linkage, Valve 61
- Cooling System 62
- Testing and Adjusting 64
- Thermostat Housing 68
- Water Pump 69
- Lubrication System 70
- Instrument Panel 72
- (1) Engine Oil Light 72
- Oil Pan 73
- Oil Pump 74
- Oil Pump Assembly 75
- Camshaft Case Assembly 76
- Cylinder Head 80
- Valve, Spring or Seal 81
- Engine Disassembly 83
- Engine Assembly 87
- Cylinder Block 92
- Crankshaft 93
- Important 94
- Specifications 103
- Ignition System 104
- Inspection of Ignition Coil 105
- Spark Plug Wire Inspection 106
- Spark Plug Wire Replacement 106
- Spark Plug Replacement 107
- CAUTION 107
- Spark Plug Inspection 107
- Charging System 109
- D187478 110
- Troubleshooting Procedure 112
- 13.2~15.4V 114
- STARTING SYSTEM 117
- Diagnosis Procedure 118
- Start Relay Tests 120
- Troubleshooting 121
- Starter Repair 122
- WARNING 122
- General Information 123
- Service Standard 128
- Component Location 129
- General Description 133
- (Dual Fuel Only) 134
- LPG Fuel System Operation 136
- Electronic Throttle System 144
- Exhaust System 146
- CAUTION—PROPER WIRING 151
- G424F EMS (Engine Management 154
- System) Overview 154
- EMS Inspection and Repair 163
- Camshaft Position Sensor 165
- (G424FE- Dual Fuel Only) 165
- Removal 165
- Tighten 166
- Crankshaft Position Sensor 167
- Sensor 168
- IAT (Intake Air Temperature) 169
- [CIRCUIT DIAGRAM] 170
- [HARNESS CONNECTORS] 170
- ECM 173
- LP Fuel Temperature Sensor 174
- Angle Sensor-Accelerator 175
- Electronic Throttle Body 178
- Removal and Installation 179
- WARNING - PROPER USE 179
- Hose Connections 180
- Certified System Connections 180
- DIAGRAM NOTES 181
- Removal and Installation of 182
- N-2007 LP Regulator 182
- VACUUM PORT BARB 184
- ALTERNATE VACUUM 184
- PORT BARB 184
- Tests and Adjustments 185
- WARNING—PROPER USE 185
- Idle Mixture Adjustment 188
- Parts Description 191
- WARNING – PROPER USE 195
- DWG NO 5555-1243 196
- Regulator/Converter 197
- CA100 Mixer for G424F Engine 205
- CA100 Disassembled Service 208
- Figure R3 211
- Figure R4 211
- Figure R5 211
- Figure R6 211
- Figure R8 212
- Figure R9 212
- Figure R7 212
- N2001 Disassembled Service 213
- Specification 214
- Components Location 215
- Fuel Pressure Test 216
- Injector 218
- Inspection 220
- Installation 220
- Fuel Pump 221
- Preliminary Checks 222
- Basic Troubleshooting Guide 223
- Basic Inspection Procedure 224
- Basic Troubleshooting 235
- Surges and/or Stumbles 236
- Acceleration 239
- Acceleration (cont’d.) 240
- Detonation / Spark Knock 241
- Backfire 242
- Dieseling, Run-on 242
- Cuts Out, Misses 245
- High Idle Speed 247
- Displaying Fault Codes (DFC) 251
- Clearing Fault (DFC) Codes 251
- Fault Action Descriptions 252
- Fault List Definitions 252
- Appendix 281
- 280 Appendix 282
- MotoView Display Screens 283
- 282 Appendix 284
- 283 Appendix 285
- 284 Appendix 286
- 285 Appendix 287
- 286 Appendix 288
- 287 Appendix 289
- 288 Appendix 290
- 290 Appendix 292
- 291 Appendix 293
- 293 Appendix 295
- Copy the .dll file to the 295
- TDDBLL directory 295
- Copy the .mfu update file to 295
- 294 Appendix 296
- Select “PCM-1” in the 296
- 296 Appendix 298
- Ground Speed Limits (Option) 299
- 298 Appendix 300
- LPG And LPG Fuel Tanks 301
- LPG Fuel Tanks 302
- Installing LPG Fuel Tanks 302
- LPG Fuel Tank Components 302
- Fuel Gauge 303
- Service Valve 303
- Quick Disconnect Coupling 304
- Filler Valve 304
- Regulatory Compliance 305
- Abbreviations 306
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