MAN TG3 Immobilizer Wiring Diagram – TGX/TGS Euro 6d (Q4 2020)

This official OEM schematic outlines the Immobilizer System (Wegfahrsperre) for MAN TG3 TGX/TGS Euro 6d trucks, sourced from MAN Truck & Bus SE – Werk München, Q4 2020 release. It maps the control logic, CAN integration, and transponder pulse communication between the immobilizer unit and the Central Vehicle Module (CVM).

🔒 System Components:

• A477.1 – Immobilizer control unit (Elektronik Wegfahrsperre)

• A1363.2 (AP025) – CVM (Central Vehicle Module)

• A/1 – Data (transponder pulse signal)

• A/2 – Terminal 15 (Ignition power)

• A/3 – Terminal 31 (Ground)

• CAN Bus:

  • A/13 (I-CAN)

  • A/14 (CAN 5 Low – CVM)

  • A/63 (CAN 5 High – CVM)

⚡ Connections are routed through:

• SYS_groundNet

• SYS_electricalPowerSupply

• Frame harness connector X6395.1

• Zentralelektrik interface: A100.1 / X2

🛡️ This diagram is ideal for:

• Diagnosing vehicle no-start conditions due to immobilizer faults

• Troubleshooting CAN dropouts between CVM and immobilizer

• Retrofits or ECU swaps requiring immobilizer pairing

• Understanding transponder signal routing and key security logic

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