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

This official schematic from MAN Truck & Bus SE details the Fuel Level Display System wiring for MAN TG3 TGX/TGS Euro 6d trucks, based on the Q4 2020 update. It outlines the connection between the fuel tank sender unit and the RIO module, enabling real-time fuel level display in the cluster and telematics integration.

⛽ Key components:

• B103.1 (B263) – Fuel tank sender unit (Tankgeber)
• A1358.1 (AP020) – RIO module
• Signal lines for:
  • A/22: Fuel level input
  • K/32: Sensor ground (Masse)
• Frame harness connectors: X6616.1A1 / X6616.2A1
• CAN wiring: A/62 & A/63 (I-CAN Bus)

Ideal for:

• Diagnosing inaccurate fuel readings
• Verifying sender-to-RIO signal integrity
• Preparing CAN-based fleet monitoring or diagnostics
• Fuel system retrofit planning or troubleshooting

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