Disconnect Engine Wiring Harness - AR01.00-P-2410-02LFA

Engine 276.8 in model 217, 222 

Perform operation steps 1 to 5 to remove the engine 

1. Disconnect electrical line (1) on ME-SFI [ME] control unit (N3/10).
2. Disconnect electrical line (2) on connecting point (3) and unclip on crash plate.
3. Detach electrical lines (4) at engine compartment pre-fuse box (F32/3).
4. Detach weather strip (5) over electrical lines (4).
5. Unclip electrical lines (4) at bulkhead and lay on engine.

   Courtesy of MERCEDES-BENZ USA

   Perform operation steps 6 to 26 for removal of cylinder head covers, the centrifuge or the charge air distributor 

6. Disconnect electrical connection at fuel injectors (Y76) on the right.
7. Disconnect electrical connection on multiplug (24).
8. Disconnect electrical connection at boost pressure control pressure transducer (Y31/5).
9. Disconnect electrical connection on pressure sensor upstream of throttle valve (B28/6) and on pressure sensor downstream of throttle valve (B28/7).

   Courtesy of MERCEDES-BENZ USA

10. Disconnect electrical connection on right intake camshaft solenoid (Y49/5) and right exhaust camshaft solenoid (Y49/7).
11. Disconnect electrical connection on right intake camshaft Hall sensor (B6/5) and right exhaust camshaft Hall sensor (B6/7).
12. Disconnect electrical connection at the ignition coils (T1) on the right.
13. Disconnect electrical connection at left divert air switchover valve (Y101/1).
14. Disconnect electrical connection on purging pressure sensor (B4/4).
15. Disconnect electrical connection on coolant thermostat heating element (R48).
16. Disconnect electrical connection on charge air temperature sensor (B17/8).
17. Disconnect electrical connection on left intake camshaft solenoid (Y49/4) and left exhaust camshaft solenoid (Y49/6).

    Courtesy of MERCEDES-BENZ USA

18. Disconnect electrical connection on left intake camshaft Hall sensor (B6/4) and left exhaust camshaft Hall sensor (B6/6).
19. Disconnect electrical connection at the ignition coils (T1) on the left.
20. Disconnect electrical connection at fuel injectors (Y76) on the left.
21. Disconnect electrical connection on fuel pressure and temperature sensor (B4/25).
22. Disconnect electrical connection on throttle valve actuator.
23. Expose A/C compressor electrical wiring harness (24) at the extension (arrow).

    Courtesy of MERCEDES-BENZ USA

24. Detach ME-SFI [ME] control unit (N3/10).
25. Detach cable duct (23) from engine and place to one side.
26. Disconnect electrical connection from A/C compressor electrical wiring harness (24) at A/C compressor (A9).

    Courtesy of MERCEDES-BENZ USA