Part 2

Tow bar wiring, 7-pin (Continued)

If the rear fog lamp function will be used: Illustration A

- Carefully press down the small catch in the locking mechanism for the grey (GR) 12-pin connector with a small screwdriver. Pull out the locking mechanism until it stops.

Illustration B

- Connect the blue (BL) cable to position 2 in the connector.
- Move the locking mechanism back to locked position.
- Insulate the cable terminal and secure the blue (BL) cable if it is not intended for connection.

If the charging function will be used: Illustration A

- Carefully press out the blue locking mechanism in the black 12-pin connector with a small screwdriver.

Illustration B

- Connect the blue/yellow (BL/Y) cable to position F in the black (SB) 12-pin connector.
- Move the locking mechanism back to locked position.
- Insulate the cable terminal on the unused black/yellow (SB/Y) cable and secure the cable to the cable harness. If neither cable is intended for connection, insulate and secure both cables.

If the reversing light function will be used: Illustration A

- Carefully press out the blue locking mechanism in the black 12-pin connector with a small screwdriver.

Illustration B

- Connect the black/yellow (SB/Y) cable to position H in the black (SB) 12-pin connector.
- Move the locking mechanism back to locked position.
- Insulate the cable terminal on the unused blue/yellow (BL/Y) cable and secure the cable to the cable harness. If neither cable is intended for connection, insulate and secure both cables.

Illustration A

- Route the cable harness from the tow bar connector through the hole in the floor.
- Adjust the position of the rubber seal (1) so that there is not excessive cable slack under the car.
- Install the rubber seal in the hole.
- Route the cable harness as shown in the illustration. Pull up the sill trim panel on the left-hand side and place the cable harness in the space along the rear edge of the left-hand floor support. Make sure the cable harness is not pinched before reinstalling the sill trim panel.
- Tighten the sill trim panel securely.

Illustration B

- Secure the cable harness to the cable harness behind the battery with a tie strap (2) from the kit.
- Connect the routed ground cable to the grounding point (3) behind the battery and tighten the grounding screw securely.

- Detach the trailer module (TRM) from the front edge of the cover on the ventilation opening along the rear edge of the left-hand rear wheel housing.
- Plug in the tow bar wiring connectors:
- green (GN) and grey (GR) connectors to the control module.
- black (SB) connector to the fuse holder.
- Reinstall the control module.
- Secure the excess cable with a tie strap from the kit.

- Insert fuses from the kit in the following positions in the fuse holder (REM):
- 20A in position 20 (mini fuse) if the charging function has been selected.
- 25A in position 29
- 25A in position 30
- Reinstall the side panel.
- Reinstall the folding panel.
- Reinstall the battery cover and bracket if applicable.
- Reinstall the storage compartment and floor hatches.

Applies to connection of the function for automatic rear fog lamp deactivation
Note! The function requires car-specific software. Program the software according to the service information described in VIDA.

Checking the 7-pin connector:

1. Left indicator lamps
2. Rear fog lamp / reversing lamp / charging
3. Ground
4. Right indicator lamps
5. Right parking lamps
6. Brake lamp
7. Left parking lamps

Steps 41-57 apply to the XC90

Applies to cars with two rows of seats
- Fold up the centre rear floor hatch (1). If the underside of the floor hatch is equipped with a grocery bag holder, the holder is secured with a strap on both ends of the storage compartment. Detach the straps.
- Remove the underlying storage compartment.
- Remove the floor hatch by folding it almost completely closed and pulling it backwards from the mountings until it releases.

Applies to cars with three rows of seats and integrated carrier bag holder on the underside of the centre floor hatch
- Fold up the centre rear floor hatch (1).
- Detach the two straps on the underlying panel. Lift up the rear edge of the panel, fold the floor hatch back towards the panel and lift out the floor hatch with the panel.

Applies to cars with three rows of seats without an integrated carrier bag holder
- Fold up the centre rear floor hatch (1) at the rear edge and lift it out.

Applies to all models
- Remove the left-hand side floor hatch (2).

- Remove the folding side panel from the left-hand side in the cargo compartment.

- Remove the three screws in the battery holder. Lift the battery holder out.
- Remove the battery cover.

- Pull off the rubber strip at the rear edge of the door opening for the left-hand rear door opposite the left-hand C-post panel.
- Carefully pry off the left-hand C-post panel sides at the top. Use a plastic weatherstrip tool. Then pull until the three clips on the inside release. Do not damage the headlining or the panel.
- Remove the panel by pulling upwards slightly and unhooking it from the side panel.

- Remove the rear roof panel covers and the screws beneath them.
- Carefully pry off the panel at the rear edge. Use a plastic weatherstrip tool.
- Pull the rear edge of the panel downwards until the four clips on the top release.
- If the car is equipped with lighting in the panel, unplug the connector from the panel.
- Pull the panel backwards to release it.

- Carefully pull off the D-post panel. Start at the top edge then pull down until the three clips on the inside release. Do not damage the panel.
- Disconnect the connector on the D-post panel (if the car has a loudspeaker in the D-post, the connector is in the loudspeaker).
- Remove the panel by pulling upwards slightly and unhooking it from the side panel.

Illustration A shows the removal of the cover for the load securing eyelets

- Fold out the load securing eyelet.
- Insert a scriber with an angled tip into the hole in the top of the cover.
- Turn the scriber so that the angled tip engages in the reverse of the cover (1). Pull the cover off.

Illustration B applies to cars with two rows of seats

Illustration C applies to cars with three rows of seats

- Fold up the seats in the third row (applies to cars with three rows of seats).
- Remove the screws (2) for the load securing eyelets in the left-hand side panel.
- Remove the covers (3) over the front mountings for the left-hand side panel. Pry the covers off. Use a plastic weatherstrip tool or a small screwdriver.
- Remove the screws (4).
- Remove the clip (5) at the bottom of the storage compartment in the panel (Applies to cars with three rows of seats).
- Remove the panel by pulling out the upper edge slightly so that the clips on the inside release. Pull the panel straight up.

- Remove the drain hose (1) from the battery.
- Remove the rubber seal (2). It will not be re-used.
- Pull off the small, thin rubber strap on the new rubber seal.
- Insert the old drain hose through the new rubber seal. Make sure the hose is not obstructed and that it is not folded.

Note! It is only possible to connect one of the functions (rear fog lamps, charging or reversing lamps). You can also choose not to connect any of the functions.

If the rear fog lamp function will be used: Illustration A

- Carefully press down the small catch in the locking mechanism for the grey (GR) 12-pin connector with a small screwdriver. Pull out the locking mechanism until it stops.

Illustration B

- Carefully press out the blue locking mechanism in the black 12-pin connector with a small screwdriver.

Illustration B

- Route the cable harness from the tow bar connector through the hole in the floor.
- Adjust the position of the rubber seal (1) so that there is not excessive cable slack under the car.
- Install the rubber seal in the hole.
- Route the cable harness as illustrated. Insert it through the hole along the rear edge of the left-hand cargo floor support.
- Secure the cable harness to the cable harness behind the battery with tie straps (2) from the kit.

Illustration B

- Connect the routed ground cable to the grounding point (3) behind the battery and tighten the grounding screw securely.
- Connect the drain hose (4) to the battery.

Note! If the cable harness is stretched too tightly, it can scrape against the lower edge of the bumper and become damaged.

Make sure the cable harness curves around the lower edge of the bumper as shown in the illustration.

Note! On the XC90 Executive, T-wiring is already installed in the fuse holder. A cable with a black connector is taped to this. The tow bar wiring's black connector is then connected to this cable.

- Detach the trailer module (TRM) from the Velcro fastener on the floor along the rear edge of the left-hand rear wheel housing.
- Plug in the tow bar wiring connectors:
- green (GN) and grey (GR) connectors to the control module.
- black (SB) connector to the fuse holder.
- Reinstall the control module.
- Secure the excess cable with a tie strap from the kit.

- Insert fuses from the kit in the following positions in the fuse holder (REM):
- 20A in position 20 (mini fuse) if the charging function has been selected.
- 25A in position 29
- 25A in position 30

Reinstall:
- the left-hand side panel using the screws and cover. Tighten the screws in the load securing eyelets. Tighten to 24 Nm (18 lbf ft).
- the covers for the load securing eyelets.
- D-post panel with connector.
- the connector for the rear roof lighting (if applicable).
- the rear headlining.
- C-post panel.
- protective cover and bracket for the battery.
- side floor hatch and folding panel.
- storage compartment and floor hatch.

Applies to connection of the function for automatic rear fog lamp deactivation
Note! The function requires car-specific software. Program the software according to the service information described in VIDA.

Checking the 7-pin connector:

1. Left indicator lamps
2. Rear fog lamp / reversing lamp / charging
3. Ground
4. Right indicator lamps
5. Right parking lamps
6. Brake lamp
7. Left parking lamps