AR07.07-P-1453QB | Removing/installing the hot film mass air flow sensor | 22.3.05 |
ENGINE 272.920 in MODEL 203.052 /252 /752
ENGINE 272.940 in MODEL 203.054 /254, 209.354 /454
ENGINE 272.960 in MODEL 203.056 /256 /756, 209.356 /456
ENGINE 272.970 in MODEL 203.087 /287
ENGINE 272.941 in MODEL 203.092 /292
ENGINE 273 in MODEL 209
P07.07-2059-05
1 Air filter housing
2 Electrical connector
3a Right notch
3b Left notch
4 Resonance intake pipe
5 Spring steel sheet
6 Air duct housing
7 Seal
A Grid
B2/5 Hot film MAF sensor
| Removing/installing | ||
Danger! | Risk of injury caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof. | When moving components, ensure that no body parts or limbs are within the operating range of moving parts. | |
| Information on preventing damage to electronic components due to electrostatic discharge | ||
1 | Turn key in ignition switch to position "0". | ||
2 | Open engine hood and raise to vertical position | Model 203 | |
Model 209 | |||
3 | Remove air filter housing (1). | ||
4 | Remove the electrical connector (2) at the hot film mass air flow sensor (B2/5) | ||
5 | Disengage the right notch (3a) of the hot film mass air flow sensor (B2/5) at the resonance intake manifold (4) | Pull the right notch (3a) upwards while doing this until the it can no longer latch on the resonance intake manifold (4). | |
6 | Unlatch left notch (3b) for hot film MAF sensor (B2/5) on resonance intake manifold (4) and tip hot film MAF sensor (B2/5) somewhat to the rear | Do not the damage the grid (A) in the process as it cannot be replaced separately! | |
7 | Disengage the spring steel sheet (5) and remove the hot film mass air flow sensor (B2/5) from the air duct housing (6) | Do not deform the 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. | |
| Check | ||
8 | Check seal (7) between air duct housing (6) and hot film MAF sensor (B2/5) for damage; replace if necessary | ||
9 | Check right notch (3a), left notch (3b) and spring steel sheet (5) for damage; replace if necessary | ||
10 | Install in reverse order | ||
11 | Read out fault memory | STAR DIAGNOSIS diagnosis system | |
| Connect up STAR DIAGNOSIS and read out fault memory |
Commercially available tools
Referenced documents
- ad0000p200004a Connect STAR DIAGNOSIS and read out fault memory
- ad0000p200004a
- ah5400p000101a Information on preventing damage to electronic components due to electrostatic discharge
- ar0910p1150qb Remove/install air filter housing
- ar8840p1000p Opening engine hood, moving to upright position and closing
- ar8840p1000p
- ar8840p1000q Open engine hood, move to upright position and close
- as0000z001101a Risk of injury caused by fingers being jammed or pinched when removing, installing or aligning hoods, doors, trunk lid/rear-end door or sliding roof.