OEM wiring set outlines the complete HydroDrive (Hydrostatische Vorderachse) system for MAN TG3 TGX/TGS Euro 6d trucks, as published by MAN Truck & Bus SE (Werk München), Q4 2020. The HydroDrive system is a hydraulically driven front axle solution that activates under traction-demanding conditions, typically used in off-road or municipal transport applications.
🛠️ System Components & Functions:
Solenoid Valves (Y305):
Y384.1 – Clutch valve (main pump)
Y385.1 – Main valve 1
Y386.1 – Main valve 2
Y387.1 – Feed pump valve
Sensors:
B551.1 – Oil temperature (hydrostatic front axle)
B620.1 – Oil pressure (HydroDrive)
BV117.1 – RPM sensor (HVA pump)
Actuators & Cooling:
K934.1 – Hydro fan relay
M196.1 – Oil cooler fan motor
Control Modules:
A1358.1 – RIO
A1363.2 – CVM (AP025)
A100.1 – Zentralelektrik
CAN/LIN Integration:
CAN 5 High/Low from CVM and RIO
LIN control via differential lock switch
Ground/Power Paths:
SYS_groundNet
SYS_electricalPowerSupply
Relay and fuse routing for K280, F720.1
🧩 Additional Connectors:
X6302, X6490, X6478, X6816 (frame-to-cab connectors for HydroDrive)
Preconfigured with harness sets (e.g., 81.25475-0283, -0453, -6033)
Ideal for:
Diagnosing HydroDrive activation or pressure failures
Planning or retrofitting 4×4 hydraulic traction
Tracing sensor feedback through CAN and LIN to CVM/ECU
Heavy terrain fleet and refuse vehicle maintenance teams
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