MAN TG3 Differential Locking Wiring Diagrams – TGX/TGS Euro 6d (Q4 2020)

OEM schematic set covers the Differential Locking System for MAN TG3 TGX/TGS Euro 6d trucks, sourced from MAN Truck & Bus SE (Werk München), Q4 2020 edition. It details wiring for electronic and solenoid-based locking across front, rear, and transfer axles, tailored for both 2-axle and 3/4-axle vehicles.

? Included functions:

• Drehschalter & Taster (Switches & Buttons) for longitudinal and transverse diff-locks
• Solenoid valves for:
  • Front axle (VA), Rear axle (HA), Transfer case (VG)
  • Längs-/Quer-Sperren (longitudinal/transverse locks)
• Status indicator switches (Anzeige Diff.-Sperre) for each lock
• All-wheel drive control logic via VG102/103/172/173
• RIO integration (AP020) for electronic control
• CAN bus (I-CAN, D-CAN) and LIN topology mapping
• Variants table for supported axle and gearbox configurations (e.g. 8×6, 8×8, with/without neutral position)

Perfect for:

• Diagnosing failed diff-lock solenoids or indicators
• Retrofitting diff-lock or AWD switching
• Understanding VG-based transmission shift control
• Workshop fault tracing via MAN EPC or CATS III

Delivery: