P07.07-2078-05
1 Air cleaner housing
2 Electrical connector
3a Right notch
3b Left notch
4 Resonance intake manifold
5 Spring steel sheet
6 Air duct housing
7 Gasket
A Grid
B2/5 Hot film mass air flow sensor
| Remove/install | ||
| Notes on avoiding damage through contamination and foreign objects | ||
1 | Switch off ignition | ||
2 | Remove air filter housing (1). | ||
3 | Detach vacuum line on resonance intake manifold (4) and vacuum pump and set aside | Model 212.057 | |
4 | Disconnect electrical connector (2) at hot film mass air flow sensor (B2/5) | ||
5 | 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). | |
6 | 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! | |
7 | 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 | ||
8 | Check seal (7) between air duct housing (6) and hot film MAF sensor (B2/5) for damage; replace if necessary | ||
9 | 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. | |
10 | Install in the reverse order | ||
11 | Connect STAR DIAGNOSIS and read fault memory |
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