Remove/install hot film mass air flow sensor

AR07.07-P-1456OIF

Remove/install hot film mass air flow sensor

23.09.2019

Engine

656 in model 253

2

Electrical connector

3

Clip

4

Clamps

B2/5

Hot film mass air flow sensor

 Warning

Risk of injury. Skin or eye injuries may result when handling hot or glowing objects.

Wear protective gloves, protective clothing and safety glasses, if necessary.

AS00.00-Z-0002-01A

Topical note

Information on preventing damage to electronic components due to electrostatic discharge

AH54.00-P-0001-01A

Topical note

Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

 

Remove/install

1

Switch off ignition and store transmitter key outside of transmitter range (min. 2 m).

2

Remove upper engine covers.



AP01.10-P-2405-01L

3

Release and disconnect the electrical connector (2).

4

Release clamp (3).

 Installation: Replace clamp (3).

 Air intake line to exhaust gas turbocharger/air duct housing

*BA09.10-P-1002-01P

5

Open clips (4).

6

Remove hot film mass air flow sensor (B2/5).

 Installation:
Replace the seal between the hot film mass air flow sensor (B2/5) and the air filter housing, and ensure they are positioned correctly.
Otherwise leaks can occur in the charge air system.

7

Install in the reverse order.

8

Connect vehicle diagnosis system, read out fault memory and clear if necessary.

After replacing the hot film mass air flow sensor (B2/5).



AD00.00-P-2000-04B

 Air filter

Number

Designation

Engine 656

BA09.10-P-1002-01P

Air intake line to exhaust gas turbocharger/air duct housing

Clip

Nm

4

Screw

M6

Nm

8