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Home >> Mercedes Benz >> 2017 >> C300 Base, 2D Convertible >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Complete Engine - 205 Chassis >> Testing & Repair >> Disconnect Engine Wiring Harness For Removal Of Cylinder Head Covers - AR01.00-P-2410-04MMV

Disconnect Engine Wiring Harness For Removal Of Cylinder Head Covers - AR01.00-P-2410-04MMV

Engine 276.8 in model 205 

Engine 276.8 in model 253 

  1. Release and disconnect electrical connection at the fuel injectors (Y76) on the right.
  2. Release and disconnect electrical connection on multiplug (24).
  3. Release and disconnect electrical connection at boost pressure control pressure transducer (Y31/5).
  4. Release and disconnect electrical connection on pressure sensor upstream of throttle valve (B28/6) and on pressure sensor downstream of throttle valve.
  5. Release and disconnect electrical connection on right intake camshaft solenoid (Y49/5) and right exhaust camshaft solenoid (Y49/7).
  6. Release and disconnect electrical connection on right intake camshaft Hall sensor (B6/5) and right exhaust camshaft Hall sensor (B6/7).
  7. Release and disconnect electrical connection at the ignition coils (T1) on the right.
    G12816327Courtesy of MERCEDES-BENZ USA
  8. Release and disconnect electrical connection at left divert air switchover valve (Y101/1).
  9. Release and disconnect electrical connection on purging pressure sensor (B4/4).
  10. Release and disconnect electrical connection on coolant thermostat heating element (R48).
  11. Release and disconnect electrical connection on charge air temperature sensor (B17/8).
  12. Release and disconnect electrical connection on left intake camshaft solenoid (Y49/4) and left exhaust camshaft solenoid (Y49/6).
  13. Release and disconnect electrical connection on left intake camshaft Hall sensor (B6/4) and left exhaust camshaft Hall sensor (B6/6).
  14. Release and disconnect electrical connection at the ignition coils (T1) on the left.
  15. Release and disconnect electrical connection at the fuel injectors (Y76) on the left.
  16. Release and disconnect electrical connection on fuel pressure and temperature sensor (B4/25).
  17. Release and disconnect electrical connection on throttle valve actuator.
    G12816328Courtesy of MERCEDES-BENZ USA
  18. Expose A/C compressor electrical wiring harness (24) at the extension (arrow).
    G12816329Courtesy of MERCEDES-BENZ USA
  19. Detach cable duct (23) from engine and place to one side.
  20. Release and disconnect electrical connection from A/C compressor electrical wiring harness (24) at A/C compressor (A9).
  21. Unclip electrical connection for left oxygen sensor upstream of catalytic converter (G3/3x1) from holder.
  22. Unclip electrical connection for left oxygen sensor downstream of catalytic converter (G3/5x1) from holder.
  23. Unclip wiring harness of the electrical connection for left oxygen sensor upstream of CAT (/3x1) and the electrical connection for left oxygen sensor downstream of CATG3 (G3/5x1) at cylinder head cover.
G12816330Courtesy of MERCEDES-BENZ USA
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