MAN TG3 Electronic Parking Brake Wiring Diagrams – EPB Control Unit, CAN System, Pressure Sensor & Fuse Routing

This technical wiring manual contains the complete electrical schematics for the electronic parking brake (EPB) system used in MAN TG3 trucks.

The diagrams include the full control architecture for the EPB control unit, parking brake operating switch, CAN communication networks, fuse protection circuits, pressure monitoring sensors, and electrical supply routing.

All circuits include connector identifiers, CAN bus topology references, and grounding architecture required for professional diagnostics, repair, or retrofit work.

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Electronic Parking Brake System Components

• EPB control unit (AV151.1)

• Parking brake operating element (S1486.1)

• Central electrical system (A100.1)

• RIO control module (A1358.1)

• PFB ATO module (A1357.1)

These components form the electronic control system responsible for activating and monitoring the vehicle parking brake.

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Electrical Supply and Fuse Protection

• Fuse EPB (F1702.1, terminal 15)

• Fuse EPB_1 (F1709.1, terminal 30)

• Fuse EPB_2 (F1710.1, terminal 30)

These protected circuits supply the EPB control unit and related electronic components.

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CAN Bus and Communication Networks

• C-CAN communication network

• I-CAN communication through RIO module

CAN topology termination must be respected, including the 120-ohm termination requirement when the EPB ECU is the network end participant.

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Pressure Monitoring and Sensor Wiring

• Parking brake pressure sensor or pressure switch (B369.1)

• Sensor supply circuits

• Sensor ground routing

• Signal transmission to RIO

Different vehicle variants may use either a pressure sensor or pressure switch depending on brake configuration.

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Wiring Harness Interfaces

• Compact battery box harness connector (X5490)

• Frame harness connector (X6616)

• Cab-frame connector (X6302)

• Frame separation connector left/right (X6490)

These harness interfaces are required for full diagnostic tracing of the EPB electrical system.

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Diagnostic Use Cases

• electronic parking brake not engaging

• EPB warning light faults

• CAN communication brake errors

• pressure sensor signal issues

• fuse or electrical supply faults

• parking brake switch malfunction

• ECU communication problems

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Compatible Vehicles

• TGX

• TGS

• TGM

• TGL

MAN TG3 platform trucks equipped with electronic parking brake system.

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Technical Highlights

• Complete OEM electronic parking brake wiring diagrams

• EPB ECU electrical architecture included

• CAN bus communication topology shown

• Fuse protection and power routing included

• Pressure sensor and switch circuits included

• Full harness routing references included

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Table of Content

EPB Control Units

• Electronic parking brake ECU

• RIO module

• PFB ATO module

Driver Controls

• Parking brake operating element

Electrical Protection

• Fuse EPB terminal 15

• Fuse EPB terminal 30

• Central electrical system

CAN Communication

• C-CAN network

• I-CAN network

• CAN termination logic

Pressure Monitoring

• Parking brake pressure sensor

• Sensor supply circuits

• Sensor ground routing

Wiring Harness Interfaces

• Battery box connector

• Frame harness connector

• Cab-frame connector

• Frame separation connectors

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