Body Cpc4 Chipper Jenz BA 725 D

Error Codes:
61020C - Internal control unit error

The control unit with OE code A0034469002 is a CPC4 (Common Powertrain Controller) supplied by Continental, used as the coordination brain of the powertrain on Mercedes industrial engines. On the wood chipper JENZ BA 725 D it manages the interface logic between engine, control panel and machine subsystems (e.g. safety interlocks, throttle, engine speed management), acting as a communication gateway and as a computing unit for torque demand and the control of output signals.

Technical specifications

• On-board power 24 V DC typical for industrial machines; CPC4 platform designed to operate in 12/24 V depending on variant and wiring.
• CAN network (J1939) as the main backbone; support for LIN and J1708 on dedicated lines depending on configuration.
• Inputs: analog (typically 0–5 V), digital, frequency inputs (up to ~5 kHz) for speed sensors/signal recognition.
• Outputs: low-side drivers for indicators/actuators and configurable outputs (typical range 50–250 mA depending on channel and mode).
• Mounting: in the cab/electrical cabinet, positioned to be protected from extreme vibration and humidity; dedicated grounding and power supply protections are essential.

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Functions

• Powertrain coordination between the engine ECU (MCM), aftertreatment modules and control panel; calculation of the torque request from the pedal/remote controls.
• Management of starting consents and of safety (key states, emergency, system limit conditions).
• Support for preset engine speeds and for speed modulation during shredding/loading phases, according to machine parameters.
• Diagnostic gateway for the network (event reading, fault logging, operational limitations in case of fault); support for 'online' diagnostic functions where provided by the machine.

Model applications

JENZ BA 725 D with Mercedes OM 460 LA (Euromot 3B) and OM 471 engines.

Error Codes
61020C - Internal control unit error

Final conclusions

The A0034469002 (CPC4) is the powertrain coordination unit for the BA 725 D with Mercedes engines: it governs torque request, consents and network communication, with direct impact on starting, pedal response and overall reliability.

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