Energy Management, Function - GF54.10-S-0003TRA

Model 447.6 

Model 447.7 

Except Code ZH6 (Marco Polo ACTIVITY) 

Model 447.8 

Except Code ZK7 (Equipment line MARCO POLO) 

Model 448 

Courtesy of MERCEDES-BENZ USA

Shown on model 447.8 (With Engine 651) 

Courtesy of MERCEDES-BENZ USA

Shown on 447.6/7 (With Engine 651) 

Function requirements, general 

• Circuit 30 "ON"

Energy management, general 

Energy management manages stable power supply and consumption of all electrical components.

The following components are involved in energy management:

• Battery sensor (monitoring of on-board electrical system battery charge level)
• On-board electrical system battery (energy storage and supply when the engine is off)
• Alternator (energy generation)
• CDI control unit or ME-SFI [ME] control unit (N3/34) (with engine 274) (Alternator management)
• Signal acquisition and actuation module (SAM) control unit (Energy management master control unit)
• Battery cutoff relay (with CODE E36 (Cutoff relay for additional battery))
• On-board electrical system backup battery relay (with CODE MJ8 (ECO start/stop function))

Major assembly coordinator: 

The major assembly coordinator is integrated into the CDI control unit or the ME-SFI [ME] control unit (N3/34) and forms the interface between the energy management system and the alternator. The CDI control unit or the ME-SFI [ME] control unit (N3/34) communicates with the alternator over the drive train LIN.

The major assembly coordinator regulates the alternator's power output to match the energy management system specifications, taking engine load into consideration.

The recording and evaluation of the relevant variables for this are conducted by the following components:

• Alternator
• CDI control unit
• ME-SFI [ME] control unit (N3/34)
• Signal acquisition and actuation module (SAM) control unit

Energy management contains the following subfunctions, which are described in separate documents:

• Engine on energy management, function 
• Engine OFF energy management, function 
• Energy management for engine start/stop function 

The "energy management for engine start/stop function" subfunction is viewed from an energy management point-of-view. Detailed information on the "engine management start/stop function" is available in the function description "Common rail diesel injection (CDI) function" (on diesel engine).

	ECO start/stop function energy management, function	Model 447.6 with code MJ8 (ECO start/stop function) Model 447.7 with code MJ8 (ECO start/stop function) except code ZH6 (Marco Polo ACTIVITY) Model 447.8 with code MJ8 (ECO start/stop function) except code ZK7 (Equipment line MARCO POLO) Model 448 with code MJ8 (ECO start/stop function)	GF54.10-S-1040TRA
	Engine off energy management, function		GF54.10-S-1050TRA
	Engine on energy management, function		GF54.10-S-1060TRA
	Overview of energy management system components		GF54.10-S-9990TRA