Replacing Wiring Harness Section for Engine

12 51 001 - Replacing wiring harness section for engine (N73)





Necessary preliminary tasks:
- Read out DME fault memory.
- Disconnect battery negative lead Initial Inspection and Diagnostic Overview.
- Engine hood Procedures in assembly position.
- Remove right fresh air duct Removing and Installing/Replacing Left or Right Fresh-Air Duct (Automatic A/C High).
- Remove center of assembly partition wall 51 71 085 Removing and installing center of assembly compartment bulkhead.
- Remove electronics box cover.
- Remove intake air manifold Service and Repair.
- Remove underbody protection at front/rear.
- Remove reinforcement plate Service and Repair.

Unfasten following plug connections:









Unfasten following plug connections:









Unfasten following plug connections:









Unfasten following plug connections:













Release screws (1).

Release retaining clip (2).

Remove cover (3).

Installation:
Fit profile seals correctly.

Check for water leaks.





Installation:
Plug assignment in equipment carrier:

Control unit (1) VVT.

Control unit (2) DME. (plug color black).

Control unit (3) DME 2 (plug color gray).

Control unit (4) IVM (integrated supply module).

Control unit (5) HDEV 2 (high-pressure fuel injection control unit 7 to 12). (cable color red).

Control unit (6) HDEV (high-pressure fuel injection control unit 1 to 6). (cable color black).





Assemble engine.

Note:
Check function of DME.