972419 Removing and installing wire harness for removable trailer hitch
WM 972419 Removing and installing wire harness for removable trailer hitch
Technical values
Preliminary work
1. Remove rear apron. -> 635519 Removing and installing rear apron - section on "Removing"
2. Remove trailer hitch control unit. -> 669619 Removing and installing trailer hitch control unit - section on "Removing" 669619 Removing and installing trailer hitch control unit
Removing wire harness for removable trailer hitch
NOTICE
Voltage peaks
- Risk of damage to load or to the control unit
-> Switch off ignition and remove remote control before disconnecting or removing load.
Installation position of wire harness for trailer hitch
1. Cut three tie-wraps -1-.
Cutting tie-wraps
2. Open up the cover of the socket housing -1- and unscrew the three fastening screws -2-.
Removing plug socket housing
3. Push back the rubber sleeve -3- away from the socket housing in the direction of the arrow.
Rubber sleeve behind plug socket housing
4. Release the three catches -4- on the socket housing -1- using a screwdriver and pull off the socket housing -A- in the direction of the arrow.
Connector locking mechanism with socket housing
5. Guide the connector -5- and the rubber sleeve -3- through the cut-out in the trailer hitch.
Removing connector through cut-out in trailer hitch
6. Unscrew fastening screw -1- in the connector holder.
Removing connector holder
7. Release electrical plug connection at holder on both sides using a screwdriver -1- ( -a- ) and pull it off -B-.
Plug connection at holder
8. Release electrical plug connection at trailer hitch control unit using a screwdriver -2- ( -a- ) and pull it off -B-.
Plug connection at trailer hitch control unit
9. Press rubber sleeve -3- outwards and pull through wire harness -4-.
Removing rubber sleeve
10. Cut tie-wraps -5-.
Tie-wraps on bodyshell
Installing wire harness for removable trailer hitch
1. Guide the connector -5- and the rubber sleeve -3- through the cut-out in the trailer hitch in the direction of the arrow.
Installing connector through cut-out in trailer hitch
2. Insert the connector -5- into the socket housing -1- in the direction of the arrow until the connector engages securely.
Installing connector in socket housing
3. Push the rubber sleeve -3- at the back onto the socket housing -1-.
Inserting rubber sleeve on socket housing
4. Open up the cover of the socket housing -1- and insert the three fastening screws -2-.
Installing plug socket housing
5. Attach three tie wraps -1- at trailer hitch.
Installing tie-wraps
6. Attach tie-wraps -5- to bodyshell.
Tie-wraps on bodyshell
7. Press in wire harness -4- from the outside to the inside -arrow- and press in rubber sleeve -3-.
Installing rubber sleeve
8. Insert electrical plug connection at holder -arrow- until the connector engages securely.
Plug connection at holder
9. Insert electrical plug connections into the trailer hitch control unit -arrow- until the connectors engage securely.
Plug connection at trailer hitch control unit
10. Screw in fastening screw -1- in the connector holder. => Tightening torque: 9 Nm (6.5 ftlb.)
Installing connector holder
Subsequent work
1. Install rear apron. -> 635519 Removing and installing rear apron - section on "Installing"
2. Remove trailer hitch control unit. -> 669619 Removing and installing trailer hitch control unit - section on "Installing" 669619 Removing and installing trailer hitch control unit