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Home >> Mercedes Benz >> 2002 >> C240 Standard >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> Entertainment/Navigation, Headlights, Wiper/Washer -- Retrofitting & Conversion -- 203 Chassis >> Retrofitting & Conversion >> Retrofitting cellular telephone wiring harness - AN82.70-P-0002-03Q

Retrofitting cellular telephone wiring harness - AN82.70-P-0002-03Q

Model 203.0 for fixed telephone installation 

  1. Prepare telephone wiring harness (2) and microphone wiring harness (3) as shown in figure.

    Connection diagram for telephone 

    Fig 1: Connection Schematic Diagram For Telephone Wiring Harness And Microphone Wiring Harness - Model 203.0 For Fixed Telephone Installation
    G04736170
  2. Route wiring harness (2 and 3) along existing leads in vehicle as shown in figure.
    Fig 2: Connection Schematic Diagram For Wiring Harness
    G04736171
  3. Route branch-off line from wiring harness of telephone (2) to the handset transmitter/receiver connector (X39/5) in the center console in the area of the heating controls.
    Fig 3: Identifying Handset Transmitter/Receiver Connector And Radio
    G04736172
  4. Route telephone wiring harness (2) in cable duct in front of driver side and/or passenger side.
    Fig 4: Identifying Wakeup Signal Connector, Handset Transmitter And Receiver Connector
    G04736173
  5. Route green/black lead (gn/sw) for telephone wiring harness (2) to radio mute connector (X30/12) to left A-pillar and insert into chamber 1 for green connector.
    Fig 5: Identifying Radio Mute Connector And Telephone Wiring Harness
    G04736174
  6. Remove cover for interior fuse box (F34) on left of instrument panel.
    Fig 6: Identifying Interior Fuse Box
    G04736175
  7. Route branch-off line from wiring harness to the interior fuse box (F34) and connect to light blue fuse location A (arrow).
    Fig 7: Identifying Light Blue Fuse In Interior Fuse Box
    G04736176
  8. Route branch-off line to the front SAM control module with fuse and relay module (N10/1) along the A-pillar and connect at connecting location 23.
    Fig 8: Identifying Fuse And Relay Module
    G04736177
  9. Route blue/black lead (bl/sw) from telephone wiring harness (2) to wakeup signal connector (X30/8) on right A-pillar and insert into chamber 3 for black connector.
  10. Route telephone wiring harness (2) and microphone wiring harness in right cable duct.
    Fig 9: Identifying Telephone Wiring Harness And Wakeup Signal Connector
    G04736178
  11. Insert separation point for microphone (X58/3) into the cable duct on the right rear door.
    Fig 10: Identifying Separation Point For Microphone
    G04736179
  12. Route branch-off lines from wiring harness (2) of roof antenna connector (X1/16) to right-hand C-pillar and connect at the antenna line. Fasten wiring harness with adhesive felt.
    Fig 11: Identifying Roof Antenna Connector
    G04736180
  13. Route branch-off line from telephone wiring harness (2) into the trunk.
    Fig 12: Identifying Telephone Wiring Harness
    G04736181
  14. Connect the two wiring harness connectors (2) to telephone transmitter/receiver D2B (A35/13).

    IMPORTANT Do not kink optical waveguide (1).

    Fig 13: Identifying Telephone Transmitter/Receiver D2B
    G04736182
  15. Connect brown wire (br) to ground (right wheel housing in trunk) (W7).
    Fig 14: Identifying Brown Wire
    G04736183
  16. Route microphone wiring harness (3) at the right A-pillar to the headliner and behind the headliner to the overhead control panel (arrow).
    Fig 15: Identifying Microphone Wiring Harness
    G04736184
  17. Connect microphone wiring harness (3) at microphone of hands-free system (B25).
    Fig 16: Identifying Microphone Wiring Harness And Microphone Of Hands-Free System
    G04736185