Part of the Doosan Repair Manuals.
Chasing electrical gremlins on your DX340LC-5 or DX350LC-5? This 496-page Doosan diagnostic manual PDF is the factory troubleshooting reference for both crawler excavators. You get complete failure code tables covering E-ECU and gauge panel communication errors, wiring pin-outs for every connector, relay, and fuse on the machine, plus hydraulic schematics for tracing pump, main control valve, and proportional valve faults. Inside: step-by-step sensor testing procedures, DMS diagnosis routines for pump relief pressure and boom, arm, and bucket operation, and performance standard tables for cycle times, travel speed, and swing speed. Check the coolant temperature sensor at 2,419 ohms plus or minus 85 at 20 degrees C, and confirm the breaker solenoid valve reads 27.6 ohms before you condemn the harness. No more chasing wiring faults with a multimeter and a prayer. Bookmarked with a full text layer: search any fault code, jump straight to the fix, and get back to work.
Complete the set for your DX340LC-5, DX350LC-5
- Repair Manual: Doosan DX340LC-5, DX350LC-5 Shop Manual — Wiring Diagrams
What's Inside This Manual
| System | Pages | Key Topics |
|---|---|---|
| General Information on Troubleshooting | 3-38 | Safety Instructions |
| Diagnostic Procedures and Related Device of Wiring Devices | 39-100 | Connectors, Fuse List, Relay, Circuit Breakers, Battery Disconnector Switch, Diodes, Sensors |
| Specifications | 101-122 | Performance Tests, Operational Performance Standard Table, Hydraulic Cylinder Cycle Time, Travel Speed, Swing Speed |
| Failure Code Table and Communication Errors | 123-144 | Failure Code Table, Gauge Panel Communication Error, E-ECU Communication Error |
| Proportional Valve Troubleshooting | 145-159 | Pump Proportional Valve (a), Pump Proportional Valve (B), Fan Control Proportional Valve (J), Pressure Control Proportional Valve, Flow Control Proportional Valve |
| Relay, Sensor, and Electrical System Troubleshooting | 160-236 | Alarm Relay, Starter Relay, Thumb Wheel, Oil Temperature Sensor, Fuel Sensor, Wif Sensor, Angle Sensor, Alternator Potential |
| Hydraulic and Mechanical System Troubleshooting | 237-317 | Starter Switch, Auto Idle, Wiper Motor, Work Equipment Operation, Travel Operation, Swing Operation, Hydraulic Pump, Main Control Valve |
| Troubleshooting by the Dms (Hydraulic Pressures) | 318-408 | Dms Diagnosis, Pump Relief Pressure, Swing Relief Pressure, Boom Up/Down Operation, Arm Crowding/Dumping Operation, Bucket Crowding/Dumping Operation, Travel Operation |
| Troubleshooting by the Dms (D-Eco Power System) | 409-496 | D-Eco Power System, Pump Relief Pressure, Swing Relief Pressure, Boom Up Operation, Arm Crowding Operation, Air Bleeding of Control Valve |
Quick Reference Specifications
| Specification | Value | Page |
|---|---|---|
| Coolant temperature sensor resistance at 20°C | 2,419 ±85 Ω | p. 244 |
| Engine power limitation temperature | 116 - 117°C | p. 97 |
| Cylinder Creeping (Boom) | below 20 mm/5 min | p. 112 |
| Cylinder Creeping (Arm) | below 20 mm/5 min | p. 112 |
| Breaker Operating Solenoid Valve Resistance | 27.6 Ω ±5% | p. 226 |
| Breaker Operating Solenoid Valve Voltage | 24 V DC ±10% | p. 226 |
| Coolant temperature sensor resistance at -40°C | 39,649 ±2,641 Ω | p. 244 |
| Coolant overheating level | 113°C (235.4°F) | p. 365 |
| Standard Boom Weight | 2,697 kg | p. 106 |
| Counterweight Weight | 7,100 kg | p. 106 |
| Fuel Tank Capacity | 600 liters | p. 106 |
| Hydraulic System Capacity | 450 liters | p. 106 |
| Water temperature sensor (heater core) resistance at 25°C | 10,000 Ω | p. 92 |
