M43TU engine
Note. When installing, replace the gasket under the throttle body.
Withdrawal
1. Disconnect the negative battery cable.
2. Turn away screws and remove a cover from the throttle body.
3. Turn away bolts of fastening of an arm to the throttle body (pic. 11.3).
4. Disconnect the electrical connectors for the throttle position sensor and the idle air valve.
5. Disconnect the accelerator cable from the throttle lever and remove it from the support bracket (see fig. 5.2 and 5.3). If there is also a cable "cruise control", then disconnect it in the same way.
6. Turn out four bolts of fastening of the throttle body to an inlet manifold and remove the case from a collector. Remove gasket between damper body and manifold (pic. 11.6, a, b).
Installation
7. Installation is carried out in the reverse order of removal, taking into account the following notes.
- A) Install a new gasket between the throttle body and intake manifold.
- b) Connect and. if necessary, adjust the accelerator cable (see paragraph 5).
- V) Finally, allow a specialist to check for the presence of fault codes in the memory of the self-diagnosis system and delete them if there are no more faults.
N42 engine
Withdrawal
8. Remove the air cleaner (see paragraph 2).
9. Disconnect the electrical connector, remove the four bolts and remove the throttle body (pic. 11.9).
Installation
10. Check the condition of the O-ring between the throttle body and intake manifold. If it is in good condition, it can be used again. Install the throttle body to the intake manifold, and securely tighten its bolts.
11. Connect the electrical connector and install the air cleaner.
12. In conclusion, provide an opportunity for a specialist to check for the presence of fault codes in the memory of the self-diagnosis system and delete them. if there are no more faults.
M52TU engine
Withdrawal
13. Disconnect the negative battery cable.
14. Remove the air cleaner (see paragraph 2).
15. Remove the air duct with the air flow sensor (see paragraph 12).
16. Disconnect the cable (s) from the throttle sector and release it (their) from the bracket.
17. Disconnect the air duct from the throttle body and the idle air valve.
18. Disconnect all electrical connectors on the damper body.
19. Disconnect the wiring from the emergency pressure and emergency oil temperature sensors next to the oil filter.
20. Release from an arm on a tube of an oil probe fuel pipelines and a vacuum hose.
21. Disconnect the oil return tube from the dipstick tube, unscrew the oil dipstick tube mounting bolt and remove it from the engine. The o-ring of the tube can be discarded - it must be replaced during installation (pic. 11.21).
22. Turn out three screws/nuts of fastening of a box of a cable.
23. On the M52TU engine, turn the electrical connector ring on the throttle body and disconnect the connector. On the M54 engine, release the connector lock and disconnect the connector (pic. 11.23). Remove the four screws securing the damper housing to the intake manifold and remove the housing.
Installation
24. Check the condition of the sealing ring between the throttle body and intake manifold. If it is in good condition, it can be used again. Install the throttle body to the intake manifold, and securely tighten its bolts.
25. Before connecting the throttle body electrical connector on the M52TU engine, turn its ring so that the red dowel pin is visible in the ring window. Align the arrow on the ring with the arrow on the female connector and insert the plug into the socket. Turn the connector ring clockwise. so that the second arrow of the ring is aligned with the arrow on the socket (pic. 11.25). On the M54 engine, simply insert the plug into the socket.
26. The rest of the installation is performed in the reverse order of removal. Please note that if the throttle body has been replaced, then the settings corresponding to the characteristics of the engine and stored in the memory of the ECU must be changed. This can be done by a dealer or a specialist who has the appropriate equipment at his disposal.
M54 engine
Withdrawal
27. Disconnect the negative battery cable.
28. Remove the air cleaner (see paragraph 2).
29. Separate an electric socket, disconnect a vacuum hose and remove a connecting air duct of an air cleaner.
30. Remove the two screws securing the intake manifold configuration adjustment assembly. disconnect its electrical connector and remove the assembly from the manifold (pic. 11.30).
31. Turn out a bolt of fastening of a tube of a suction to an inlet collector (pic. 11.31).
32. Release the clamps and disconnect the air ducts from the throttle body and from the idle air valve.
33. Separate an electric socket of the valve of idling.
34. Separate electric sockets of gauges of emergency pressure and emergency temperature of oil near to the oil filter.
35. Press the latch and disconnect the fuel tank vent valve electrical connector (pic. 11.35).
36. Next, follow the steps indicated in p.p. 24-26.