LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 1999 >> E320 4Matic, 4D Wagon >> Repair and Diagnosis >> Engine Performance >> Ignition System >> Mixture Formation - Basic Knowledge - 210 Chassis (Part 1) >> Basic Knowledge >> IFI limiting engine maximum speed function - GF07.12-P-3007HA
April 5, 2026: LEMON Manuals is launched! Read the announcement.

IFI limiting engine maximum speed function - GF07.12-P-3007HA

ENGINE 605.960 in MODEL 202.128 as of 1.4.96, 202.188 

ENGINE 605.912 in MODEL 210.010 as of 1.6.96, 210.210 /610 

ENGINE 606.912 in MODEL 210.020 as of 1.6.96 with CODE (491) U.S. version 

ENGINE 606.962 in MODEL 210.025 /225 

ENGINE 606.961 in MODEL 140.135 

ENGINE 605.962 in MODEL 210.015 /215 

Fig 1: Identifying IFI Limiting Engine Maximum Speed Function
G04623940Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Task 

To limit the maximum speed of the engine.

Function 

The IFI [ERE] control module (N3/7) detects the engine speed via the IFI/DFI [ERE/EVE] crankshaft position sensor (L5/6) and limits it by means of the fuel quantity actuator (Y23/1) and the control rod to approximately 5400 rpm, or 5300 rpm for engine 606.961/962 (under no load).

Drive train protection for MT vehicles

The injected quantity is reduced in the operating states stated below as a protection for the engine and the drive train:

Engine speed is limited by the IFI [ERE] control module (N3/7) to 3500 rpm.

The following information is processed for this purpose:

  Fuse and relay module location/task/function Model 202
Model 210 as of 03/97
GF07.13-P-3141H
  Relay module location/task/design/function Model 210 to 02/97 GF07.13-P-3101H
  IFI [ERE] control module location/task/function   GF07.12-P-3102HA 
  Crankshaft position sensor location/task/design/function   GF07.04-P-4116H 
  Fuel quantity actuator (IFI [ERE]) location/task/function   GF07.12-P-3131H 
  Fuel rack position sensor location/task/design/function   GF07.04-P-5022H 
  Clutch pedal switch location/task/function   GF29.10-P-2100A
  ABS control module location/task/design/function Model 202 GF42.30-P-4500A
  ETS control module location/task/design/function Model 210 to 02/97 GF42.35-P-4500A
  ASR control module location/task/design/function Model 140
Model 210 as of 03/97
GF42.40-P-4500A
  CAN databus function   GF54.00-P-0005HA