| 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: Operating door locks from inside the vehicle
With the door lock button:
To unlock a door, push the door lock button (1) to the “Unlock” position.
The red mark (2) on the door lock button will be visible.
To lock a door, push the door lock button (1) to the “Lock” position. If
the door is locked properly, the red mark (2) ...
Hyundai Tucson (LM) 2010-2015 Service Manual: Troubleshooting
Troubleshooting
SymptomPossible causeRemedyOne lamp does not light(all exterior)Bulb burned outReplace bulbSocket, wiring or ground faultyRepair if necessaryHead lamps do not lightBulb burned outReplace bulbIgnition fuse (LOW:10A, HIGH:20A) blownCheck for short and replace fuseHead lamp fuse (1 ...