AR07.07-P-1454RT | Remove/install hot film mass air flow sensor together with air intake pipe | 14.4.05 |
ENGINE 113.971 in MODEL 251.075 /175
P07.07-2062-06
2 Electrical connector
3 Vent line
4 Vent line
5 Top catch
6 Bottom catch
7 Air intake connection
8 Lock
9 Sealing ring
B2/5 Hot film MAF sensor
| Remove/install | ||
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. | |
1 | Open engine hood and raise to vertical position | ||
2 | Remove the partition wall between the wheelhouse liners | ||
3 | Remove air filter housing | ||
4 | Remove the electrical connector (2) at the hot film mass air flow sensor (B2/5) | ||
5 | Detach vent line (3) from hot film mass air flow sensor (B2/5) | ||
6 | Release vent line (4) from bracket at hot film mass air flow sensor (B2/5). | ||
7 | Open top catch (5) at top of hot film mass air flow sensor (B2/5) | ||
8 | Use a hook to pull up bottom catch (6) at top of air intake connection (7) | To do this, press the hot film MAF sensor (B2/5) so far back to the rear that the bottom catch (6) cannot get locked again. | |
9 | Use a screwdriver to press down lock (8) on the air intake connection (7) | To do this, push the hot film mass air flow sensor (B2/5) as far back as possible, until the lock (8) cannot latch again. | |
10 | Detach the hot film MAF sensor (B2/5) from the throttle valve actuator | Installation: Check sealing ring (9), replace if required. Check the sealing ring between air inlet connection (7) and hot film mass air flow sensor , replace if required. Check the top catch (5), bottom catch (6) and lock (8). If required, replace the locks or air intake connections (7). | |
11 | Unclip the pneumatic line of the AIR management control system from the brackets at the air intake connection (7) | ||
12 | Install in the reverse order | ||
13.1 | Read out fault memory and erase if required | When replacing the hot film MAF sensor (B2/5). | |
| Connect STAR DIAGNOSIS and read out fault memory | ||
STAR DIAGNOSIS diagnosis system | |||
Danger! | Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near engine | Secure vehicle to prevent it from moving. | |
14 | Conduct engine test run and check the intake system for leaks | If a leak is found, determine the cause and rectify, otherwise engine malfunctions may result. |
Commercially available tools
Referenced documents
- ad0000p200004a Connect STAR DIAGNOSIS and read out fault memory
- ad0000p200004a
- ar0910p1150rt Remove/install air filter housing
- ar0910p1150rtb Remove/install air filter housing
- ar0910p1150rtc Remove/install air filter housing
- ar6230p2400rt Remove/install partition wall between wheelhouses
- ar8840p1000rt Opening engine hood, moving to upright position and closing
- as0000z000501a Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running.
- 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.