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

This official OEM schematic details the Fuel Heating System for MAN TG3 TGX/TGS Euro 6d trucks, released by MAN Truck & Bus SE (Werk München) in Q4 2020. It outlines the power routing, diagnostic feedback, and CAN communication for the PTC-based fuel filter heater used in cold start and low-temperature diesel operation.

Included Components:

• A740 (A715.1) – Fuel Filter Heater (Kraftstofffilterheizung – PTC)

• F140 (F156.1) – Dedicated fuse for heater unit

• AP018 (A1356.1) – PFB Power supply unit

• AP020 (A1358.1) – RIO Module with CAN integration

• CAN lines:

  • A/62: CAN High (RIO)

  • A/63: CAN Low (RIO)

• Diagnostic and power terminals:

  • A/1: Terminal 30

  • A/2: Terminal 31

  • A/3: Diagnostics

• Connectors:

  • X2799 – Engine disconnect plug

  • X100.1 – Ground Motor connection

⚡ This schematic also references MAN-specific harness part numbers and integrates with the SYS_electricalPowerSupply pathing, supporting diagnostic modules and CVM input.

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Delivery:

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