970955 Sub-part - replacing front left wiring harness

WM 970955 Sub-part - replacing front left wiring harness

Tools





Technical values






Preliminary work

1. Disconnect battery. -> 2706IN Working instructions after disconnecting the battery Procedures
2. Remove dashboard bracket. -> 701219 Removing and installing dashboard bracket - section on "Removing" 701219 Removing and installing bracket for dashboard
3. Remove air cleaner housing. -> 242519 Removing and installing air cleaner housing - section on "Removing" Service and Repair
4. Remove relay carrier in plenum panel E-box. -> 979019 Removing and installing relay carrier, plenum panel E-box - section on "Removing" 979019 Removing and Installing Relay Carrier, Plenum Chamber E-Box.

Sub-part - removing front left wiring harness





Sub-part installation location - front left wiring harness





1. Remove cover from cable duct.





Removing cover from cable duct

Information

When cutting the front wire harness, make sure there is enough length of cable left to join to the new lines.

2. Cut off front wire harness in the areas -a-.





Cutting off and exposing front left wire harness

3. Remove fabric tape and tie-wrap in area -b- and expose the remaining lines.
4. Pull off connector on sensor for airbag -1-.





Pulling off connector on sensor for airbag

4.1. Push in latch -b- on sensor connector for airbag -a- -arrow A- , until this is felt to engage.
4.2. Release locking mechanism on the latch -b- -arrow B- and pull off connector on sensor for airbag -a- -arrow C-.
4.3. Pull off wire harness with the support from the lock carrier -arrow D-.
5. Pull off front wire harness -2- and loosen front ground strap cross member -3-.





Disconnecting front wire harness plug connection

5.1. Release plug connection for front wire harness on left front cross member -arrow A- and pull off connector -arrow B-.
5.2. Unclip connector socket -arrow C-.
5.3. Unscrew fastening nut and remove ground straps together with twist lock from threaded bolt -arrow D-.
6. Pull off connector on headlight housing -4-.





Pulling off connector on headlight housing

6.1. Release connector on headlight housing -arrow A- and pull off -arrow B-.
6.2. Unclip wire harness on the six retaining clips underneath the headlight housing -arrows C-.
7. Pull out bulb holder for the direction indicator light -6- and pull off connector for TPM antenna -5-.





Removing bulb holder for front left direction indicator light

7.1. Slightly turn bulb holder of direction indicator light in left wheel housing and remove -arrow A-.
7.2. Release connector on the antenna for TPM in left wheel housing -arrow B- and pull off -arrow C-.
8. Pull down wire harness on upper side member from the four clips -arrows A-.





Loosening wire harness on upper side member

9. Unclip wire harness on the two retaining clips -arrows B-.
10. Pull off connector on angle sensor for HBA -7-.





Pulling off connector on angle sensor for HBA

10.1. Release connector on angle sensor for HBA on the left wheel suspension -arrows A- and pull off -arrow B-.
10.2. Remove tie-wrap -arrow C- for securing the wire harness to the refrigerant line.
11. Pull off connector on servo valve -8-.





Pulling off connector on servo valve

11.1. Release connector on servo valve -arrow A- and pull off -arrow B-.
12. Pull off plug connection for ABS sensor and brake pad wear indicator -9-.





Pulling off plug connection for ABS sensor and brake pad wear indicator

12.1. Release plug connection for ABS sensor and brake pad wear indicator in left wheel housing -arrow A- and pull off -arrow B-.
12.2. Unclip socket for ABS sensor and brake pad wear indicator -arrow C-.
12.3. Unclip wire harness on the three retaining clips -arrows D-.
13. Pull off connector on sensor for lateral acceleration -11- and circulating pump connector -10-.





Pulling off connector on sensor for lateral acceleration

13.1. Release connector on sensor for lateral acceleration in left wheel housing -arrow A- and pull off -arrow B-.
13.2. Release connector on the circulating pump -arrow C- and pull off -arrow D-.
13.3. Unclip wire harness on the three retaining clips -arrows E-.
14. Remove radiator tank at front left.
15. Remove rubber sleeve from the bulkhead.





Removing rubber sleeve from the bulkhead

16. Unclip wire harness in plenum panel on the four retaining clips.





Unclipping wire harness in plenum panel

17. Remove rubber sleeve -16- on the left firewall.
17.1. Remove rubber sleeve on the left firewall in direction of engine compartment and remove front left wire harness.





Removing rubber sleeve on the left firewall

Sub-part - installing front left wire harness





Sub-part installation location - front left wiring harness





1. Mount rubber sleeve -16- on the left firewall.





Mounting the rubber sleeve on the left firewall

1.1. Push front left wire harness from the engine compartment in direction of passenger compartment and mount the rubber sleeve to the left firewall.
2. Route wire harness in plenum panel and clip in on the four retaining clips.





Clipping the wire harness in plenum panel

3. Press rubber sleeve into bulkhead.





Pressing rubber sleeve into bulkhead

4. Install plenum panel at front left.
5. Connect connector on sensor for lateral acceleration -11- and circulating pump connector -10-.





Connecting connector on sensor for lateral acceleration

5.1. Push on connector onto sensor for lateral acceleration in left wheel housing -arrow A- until this is felt to engage.
5.2. Push on the connector to the circulating pump -arrow B- until it is felt to engage.
5.3. Route wire harness and clip in the three retaining clips on the left wheel housing -arrows C-.
6. Push the plug connection for ABS sensor and brake pad wear indicator together -9-.





Pushing the plug connection for ABS sensor and brake pad wear indicator together

6.1. Route wire harness and clip in the three retaining clips in the left wheel housing -arrows A-.
6.2. Clip in socket for ABS sensor and brake pad wear indicator -arrows B-.
6.3. Push the plug connection for the ABS sensor and brake pad wear indicator -arrow C- , until this is felt to engage.
7. Push connector on servo valve -8-.





Pushing connector onto servo valve

7.1. Push connector onto servo valve until it is felt to engage.
8. Push connector on angle sensor for HBA -7-.





Pushing connector on angle sensor for HBA

8.1. Push connector onto angle sensor for HBA on the left wheel suspension -arrow A- , until this is felt to engage.
8.2. Fasten wire harness with a new tie-wrap -arrow B- to the refrigerant line.
9. Route wire harness and clip in both retaining clips -arrows A-.





Fastening wire harness on upper side member

10. Push on wire harness onto upper side member on the four clips -arrows B-.
11. Insert bulb holder in the direction indicator light -6- and push on antenna connector for TPM -5-.





Inserting bulb holder in the front left direction indicator

11.1. Insert bulb holder in the direction indicator light in the left wheel housing -arrow A- and turn slightly while doing so.
11.2. Push connector onto the antenna for TPM in left wheel housing -arrow B- , until this is felt to engage.
12. Push connector onto headlight housing -4-.





Pushing connector onto headlight housing

12.1. Route wire harness underneath the headlight housing and clip in the six retaining clips -arrows A-.
12.2. Push on connector -arrow B- , until it is felt to engage.
13. Push plug connection for front wire harness -2- together and fasten ground strap for front cross member -3-.





Pushing front wire harness plug connection together

13.1. Clip in socket for front wire harness on left front cross member -arrow A-.
13.2. Insert connector -arrow B- , until it is felt to engage.
13.3. Push ground straps together with twist lock on threaded bolt -arrow C- and screw down with fastening nut. => Tightening torque: 9 Nm (6.5 ftlb.)
14. Push connector on sensor for airbag -1-.





Pushing connector on sensor for airbag

14.1. Push on connector onto sensor for airbag -arrow A- until the latch is felt to engage.
14.2. Push wire harness with support onto lock carrier -arrow B-.

Information

Select a place for the joint where there is enough space to join all the lines present.

Do not cut the lines too short in case they have to be laid in a different position if there is insufficient space in the area of the joint.

Information

The electric lines are located in the plenum panel and are thus exposed to the highest demands.

The greatest care must be used in the individual work steps for stripping insulation from, crimping, and shrinking/insulating the electric lines.

The procedure for stripping insulation from, crimping, and shrinking/insulating the electric lines must be complied with and observed. The procedures are described in detail in the Repair kit for Cayenne harnesses NR.155-2.

Crimping samples are to be prepared before beginning work.

Information

Allocation of lines - see wiring diagram.

15. Crimp lines at -a-.





Connecting and routing front left wire harness

15.1. Cut off lines in different lengths (due to the shrink-fit connections).
15.2. Slide shrink-fit hoses onto the lines.
15.3. Strip 10 mm of insulation off the wires.
15.4. Crimp the lines with crimping sleeves and the hand crimping pliers from the repair kit for harnesses NR.155-1.
15.5. Slide the shrink-fit hoses over the crimp connections and carefully shrink them using the hot-air blower with special nozzle (recommended accessories for the repair kit for harnesses) so that it is watertight.
15.6. Wrap commercially available PVC tape all around the area of the connection points.
15.7. Secure the repaired area -b- to the main wire harness with tie-wraps.
16. Put the cover on the cable duct.





Putting the cover on the cable duct

Reworking

Subsequent work

1. Install relay carrier in plenum chamber E-box. -> 979019 Removing and installing relay carrier, plenum chamber E-box - section on "Installing" 979019 Removing and Installing Relay Carrier, Plenum Chamber E-Box
2. Install air cleaner housing. -> 242519 Removing and installing air cleaner housing - section on "Installing" Service and Repair
3. Install the bracket for the dashboard. -> 701219 Removing and installing dashboard bracket - section on "Installing" 701219 Removing and installing bracket for dashboard
4. Carry out work instructions after disconnecting the battery. -> 2706IN Working instructions after disconnecting the battery Procedures