Remove/install hot film mass air flow sensor

AR07.07-P-1453CV

Remove/install hot film mass air flow sensor

25.3.09

 

Remove/install



Notes on avoiding damage through contamination and foreign objects

AH00.00-P-5000-01A

1

Switch off ignition

2

Remove air filter housing (1).

AR09.10-P-1150CV

3

Disconnect electrical connector (2) at hot film mass air flow sensor (B2/5)

4

Disengage right notch (3a) for hot film mass air flow sensor (B2/5) at the resonance intake manifold (4)

 Pull right notch (3a) upwards while doing this until it can no longer latch onto the resonance intake manifold (4).

5

Unlatch left notch (3b) for hot film MAF sensor (B2/5) on the resonance intake manifold (4) and tilt hot film MAF sensor (B2/5) slightly to the rear

 Do not the damage the grid (A) in the process as it cannot be replaced separately!

6

Disengage spring steel sheet (5) and remove hot film mass air flow sensor (B2/5) from the air duct housing (6)

 Do not deform spring steel sheet (5) in the process permanently; it will not get locked properly at the hot film mass air flow sensor (B2/5) during installation.



Checking

7

Check seal (7) between air duct housing (6) and hot film MAF sensor (B2/5) for damage; replace if necessary

8

Check notches (3a, 3b) and spring steel sheet (5) for damage

 If notches (3a, 3b) are damaged, then the entire hot film MAF sensor (B2/5) must be replaced with a new one.

If the spring steel sheet (5) is damaged, then the entire air duct housing (6) must be replaced.

Replace air duct housing.

AR09.20-P-0080CV

9

Install in the reverse order

10

Read out fault memory and erase if necessary



Connect STAR DIAGNOSIS and read out fault memory

AD00.00-P-2000-04A