MAN TG3 Frame Level Control Wiring Diagrams – TGX/TGS Euro 6d (Q4 2020)

This 4-page OEM schematic outlines the complete ECAS (Electronically Controlled Air Suspension) system wiring for MAN TG3 TGX/TGS Euro 6d trucks. Issued by MAN Truck & Bus SE, Q4 2020, it covers lift/lower valve blocks, pressure sensors, ECAS ECU, LIN buttons, and frame-mounted control elements for variable ride height and suspension modes.

🛠️ Key Components:

• ECAS ECU (A649 – A143.1)

• Pressure sensors (VA, HA, NLA, VLA)

  • B609.1, B610.1/2, B611.1, B666.1, B668.1

• Displacement sensors:

  • B128.1, B129.1, B130.1

• Solenoid valve blocks:

  • Y132.x, Y161.1, Y162.1, Y558.1, Y559.1

• Dampening control valves:

  • Y172.1, Y173.1, Y174.1, Y175.1

• User controls via LIN bus:

  • S956.1 – ECAS Level I/II

  • S1226.1 – Regulation override

  • S1473–S1476 – Lift/Start Aid (VLA/NLA)

  • S1102.1 – Damper control

• Remote Control Unit:

  • A221.1 – ECAS wireless controller

• Harnesses and connectors:

  • X6301, X6408, X6616, X6490 – FHS/RHM cut-off and frame routes

  • Full variant matrix for 4×2, 6×2, 8×4, FNL/FLL, Scandinavian spec

Ideal for:

• Diagnosing ECAS faults, suspension not lifting/leveling

• Integrating new air bellows, lifting axles, or retrofit of 6×2/8×4 ECAS

• Mapping CAN/LIN to CVM (AP025) and RIO (A1363.2)

• Workshop-level troubleshooting and body builder adaptations

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Delivery:

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