| Circuit Diagram |
| 4WD ECU Connector |

| Pin | Function |
| 1 | CAN communication line (Low) |
| 2 | CAN communication line (High) |
| 3 | - |
| 4 | Pressure sensor signal(+) |
| 5 | - |
| 6 | Lock mode switch |
| 7 | Oil pressure motor B |
| 8 | Oil pressure motor A |
| 9 | - |
| 10 | - |
| 11 | Pressure sensor(Input) |
| 12 | Input sensor signal(-) |
| 13 | Battery power |
| 14 | Ground |
| 15 | IG power |
| 16 | - |
| 17 | - |
| 18 | - |
| 4WD ECU Circuit Diagram |

4WD ECU Flow Diagram
4WD ECU Repair proceduresHyundai Tucson (LM) 2010-2015 Owners Manual: 150,000 miles (240,000 km) or 120 months
Rotating tires
Inspect vacuum hose
Inspect air conditioning refrigerant
Inspect brake hoses and lines
Inspect drive shafts and boots
Inspect exhaust pipe and muffler
Inspect front brake disc/pads, calipers
Inspect propeller shaft (AWD)
Inspect rear brake disc/pads
Inspect steeri ...
Hyundai Tucson (LM) 2010-2015 Owners Manual: Owner maintenance schedule
When you stop for fuel:
Check the engine oil level.
Check coolant level in the engine coolant reservoir.
Check the windshield washer fluid level.
Check for low or under-inflated tires
WARNING
Be careful when checking your engine coolant level when the engine is hot.
This may result i ...