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Home >> Mercedes Benz >> 2020 >> S450 Base >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Electrical System - Engine - 222 Chassis >> Testing & Repair >> Disconnect/Connect Engine Wiring Harness To Remove Left Cylinder Head Cover >> Disconnect/Connect Engine Wiring Harness To Remove Left Cylinder Head Cover - AR15.18-P-1000-07MNL

Disconnect/Connect Engine Wiring Harness To Remove Left Cylinder Head Cover - AR15.18-P-1000-07MNL

Engine 176 in model 167 

Engine 176 in model 217, 222 

GROUND STRAP

Number Designation Engine 176
BA15.10-P-1003-05F Bolt, engine wiring harness ground to cylinder head cover Nm 9
ENGINE WIRING HARNESS

Number Designation Engine 176
BA15.18-P-1001-01G Bolt, engine wiring harness to cylinder head cover Nm 9
  1. Release and disconnect electrical connector of cylinder 5+6 ignition coil (T4/2).
  2. Release and disconnect electrical connector of cylinder 7+8 ignition coil (T4/3).
  3. Release and disconnect electrical connector of cylinder 5 intake CAMTRONIC actuator (Y49/15).
  4. Release and disconnect electrical connector of cylinder 5 exhaust CAMTRONIC actuator (Y49/16).
  5. Release and disconnect electrical connector of cylinder 8 intake CAMTRONIC actuator (Y49/17).
  6. Release and disconnect electrical connector of cylinder 8 exhaust CAMTRONIC actuator (Y49/18).
  7. Release and disconnect electrical connector of left fuel pressure and temperature sensor (B42/2).
  8. Release and disconnect electrical connector of pressure sensor downstream of left throttle valve (B28/22).
  9. Release and disconnect electrical connector of pressure sensor upstream of left throttle valve (B28/20).
  10. Release and disconnect electrical connector of left charge air temperature sensor (B17/14).
  11. Release and disconnect electrical connector of left intake camshaft Hall sensor (B6/4).
    G14790220Courtesy of MERCEDES-BENZ USA
  12. Release and disconnect electrical connector of left exhaust camshaft Hall sensor (B6/6).
  13. Release and disconnect electrical connector of left quantity control valve (Y94/1).
  14. Release and disconnect electrical connector of left intake camshaft adjustment solenoid (Y49/4).
  15. Release and disconnect electrical connector of left exhaust camshaft adjustment solenoid (Y49/6).
  16. Release and disconnect electrical connector of left overrun mode bypass air switchover valve (Y101/1).
  17. Unclip electrical connector (9) from bracket, release and disconnect and place to one side.
  18. Unclip electrical connector (8) from bracket, release and disconnect and place to one side.
  19. Release and disconnect electrical connector (30) and unclip from cylinder head cover.
  20. Remove bolt (1) TORQUE SPECIFICATION
  21. Remove screw/bolt (6) securing ground line TORQUE SPECIFICATION
  22. Unclip engine wiring harness (3) from the cylinder head cover and detach from the bracket of the purge lines.
  23. Place engine wiring harness (3) with engine wiring harness (4) to one side.
  24. Connect in reverse order.