Retrofit wiring harnesses for air conditioning - AN54.18-P-0001-01P

The air conditioning wiring harness is supplied with the branch-off lines for convenience automatic air conditioning. These branch-off lines are not routed to the corresponding components. They are routed in the passenger compartment and must be insulated.

Fig 1: Identifying Air Conditioning Wiring Harnesses Routing Components (1 Of 2)

Fig 2: Identifying Air Conditioning Wiring Harnesses Routing Components (2 Of 2)

1. Remove gasket (4).
2. Remove absorber (5).
3. Remove door sill molding (11).
4. Remove edge guard (12) in area of A-pillar paneling.
5. Unscrew bolt (13).

   Unclip cap on cover of A-pillar (14).

6. Unclip A-pillar cover (14) and remove.
7. Open cable duct on kick panel.
8. Pull branch-off lines with couplings (2, 3) through the cable duct under the absorber in the passenger compartment.
9. Route couplings (2, 3) in the cable duct.

   Insulate couplings. Route wires without kinks so they cannot chafe and tie with tie straps.

10. Insert coupling (1).

    Slot M15.

11. Install gasket (4) on wiring harness in front SAM control module with fuse and relay module (N10/1).
    Fig 3: Identifying Coupling, Fuse, Relay, Slots And Front Sam Control Module With Fuse And Relay Module

    
    Fig 4: Identifying Cable Duct, Coolant Circulation Pump, Cable, Ground (Electronics Ground - Component Compartment - Right)

    
12. Open cable duct (8).

    Cable duct under battery console.

13. Open cable duct (9).
14. Route wiring harness with branch-off lines for right major assemblies compartment electronic ground (W16/6) and coupling on coolant circulation pump (M13) under the master brake cylinder and air conditioning pressure lines at the firewall to the cable duct (8).
15. Route branch-off lines through the cable duct (9).
16. Screw on right major assemblies compartment electronic ground (W16/6).
17. Connect coupling (10) to coolant circulation pump (M13).
18. Tie branch-off lines to existing wiring harness.
    Fig 5: Identifying Cable Duct, HCS Pump, Coupling, Refrigerant Pressure And Temperature Sensor And Ground

    
19. Bolt on front left ground (for light unit) (W9).

Vehicle with headlamp cleaning system (Code 600a) 

20. 1. Connect coupling (16) to HCS pump (M5/2).

    Vehicle without headlamp cleaning system (Code 600a) 

    2. Insulate coupling (16) and tie to existing wiring harness in the area of the washing water reservoir.
21. Connect coupling (17) to refrigerant pressure and temperature sensor (B12/2).
22. Tie branch-off lines to existing wiring harness.
23. Assemble in reverse order.