Acceleration sensor position/task/design/function - GF07.04-P-4102L

ENGINE 119.980 in MODEL 140.050 /051 /070 up to 1.8.96

ENGINE 119.981 in MODEL 140.042 /043 /063 up to 1.8.96

ENGINE 119.982 in MODEL 129.067 up to 1.8.96

ENGINE 119.985 in MODEL 210.072 /272 up to 1.8.96

ENGINE 120.982 in MODEL 140.056 /057 /076 up to 1.8.96

ENGINE 120.983 in MODEL 129.076 up to 1.8.96

Position on model 140

Fig 1: Identifying Body Acceleration Sensor Position - Model 140

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Position on model 129

Fig 2: Identifying Body Acceleration Sensor Position - Model 129

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

Fig 3: Identifying Body Acceleration Sensor

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Position	At left wheelhouse
	Task	Detecting vertical vehicle movements
	Design/function	The body acceleration sensor (B27/4) consists of an electronic vibration module (operating on the spring/mass system principle). It detects the vertical body accelerations at the front wheelhouse and supplies signals to the ME-SFI control module. On a poor road surface, the engine irregular running analysis integrated in the ME-SFI control module is switched to a less sensitive setting.