970955 Sub-part - replacing wire harness in engine compartment at the front left
WM 970955 Sub-part - replacing wire harness in engine compartment at the front left
Tools
Technical values
Preliminary work
1. Disconnect battery. -> 2706IN Work instructions after disconnecting the battery Procedures
2. Remove the carrier for the instrument panel. -> 701219 Removing and installing carrier for instrument panel - section on "Removing" 701219 Removing and installing bracket for dashboard
3. Remove linings in engine compartment. -> 700219 Removing and installing front cover (engine compartment) - section on "Removing" 700219 Removing and installing front trim (engine compartment)
4. Remove front left wheel housing liner. -> 505619 Removing and installing front wheel housing liner - section on "Removing" Service and Repair
5. Remove main headlight. -> 941519 Removing and installing main headlight - section on "Removing" 94151900 Removing and installing main headlights
6. Remove front apron. -> 631519 Removing and installing front apron - section on "Removing"
7. Remove air cleaner housing. -> 242519 Removing and installing air cleaner housing - section on "Removing" Service and Repair
8. Remove wiper motor. -> 921519 Removing and installing wiper motor - section on "Removing" 921519 Removing and installing wiper motor
9. Remove relay carrier in plenum panel E-box. -> 979019 Removing and installing relay carrier in plenum panel E-box - section on "Removing" 979019 Removing and Installing Relay Carrier, Plenum Chamber E-Box
Sub-part - removing wire harness in engine compartment at the front left
Installation position of sub-part - wire harness in front left of engine compartment
1. Remove cover on cable duct (above the pedals) -arrow-.
Removing cover on 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 left wire harness in areas -a- (top left, next to the pedals).
Cutting off and exposing front left wire harness
3. Remove fabric tape and tie-wraps in area -b- and expose the remaining lines.
4. Remove left firewall.
Removing firewall
4.1. Remove oxygen sensor connector -1- from the support at the firewall and disconnect it. -> 246919 Removing and installing oxygen sensor ahead of catalytic converter - section on "Removing" 246919 Removing and installing oxygen sensors ahead of catalytic converter on DFI engines-> 247319 Removing and installing oxygen sensor behind catalytic converter - section on "Removing" 247319 Removing and installing oxygen sensor behind catalytic converter on DFI engines
4.2. Unclip wire harness at the retaining clip -2-.
4.3. Loosen PDCC reservoir at the firewall and set it aside.
4.4. Unscrew fastening screws -3- on the firewall.
4.5. Lift the firewall and seal up and off.
5. Release connector on airbag sensor at the left -1- and pull it off. -> 695119 Removing and installing airbag sensor - section on "Removing" 695119 Removing and installing airbag sensor
6. Pull off connectors -2 and 3- on fan.
6.1. Unclip wire harness at the retaining clips -arrows A-.
6.2. Release connectors on fan -arrows B- and pull them off -arrows C-.
6.3. Screw off fastening nut and pull the ground straps together with the twist lock off the threaded bolt -arrow D-.
Pulling off connectors on fan
7. Pull off plug connection for front left wire harness -4- and loosen ground strap for front left cross member -5-.
Disconnecting plug connection for front wire harness
7.1. Release plug connection for front wire harness on the front left cross member -arrow A- and pull off connector -arrow B-.
7.2. Unclip connector socket -arrow C-.
7.3. Screw off fastening nut and pull the ground straps together with the twist lock off the threaded bolt -arrow D-.
8. Unclip wire harness at the retaining clips close to the mounting for the left headlight -arrows-.
Unclipping wire harness close to mounting for left headlight
9. Release connector on TPM transmitter (trigger) -8- and pull it off. -> 44361900 Removing and installing transmitter (trigger) for Tyre Pressure Monitoring system (TPM) - section on "Removing" 44361900 Removing and Installing Transmitter (Trigger) For Tire Pressure Monitoring (TPM)
10. Pull off connector on angle sensor for range adjustment at the left -9-.
Pulling off connector on angle sensor for range adjustment
10.1. Release connector on angle sensor for range adjustment at the left -arrows A- and pull it off -arrow B-.
10.2. Remove tie-wrap used to fix the wire harness in place on the refrigerant line -arrow C-.
11. Pull off connector on servo valve -10-.
Pulling off connector on servo valve
11.1. Release connector on servo valve -arrow A- and pull it off -arrow B-.
12. Release connector for additional heating -11- and pull it off. -> 822019 Removing and installing complete heater - section on "Removing" 822019 Removing and installing complete heater
13. Pull off plug connection for ABS sensor and brake pad wear indicator on the left -12-.
Pulling off plug connection for ABS sensor and brake pad wear indicator
13.1. Release plug connection for ABS sensor and brake pad wear indicator in the left wheel housing -arrow A- and pull it off -arrow B-.
13.2. Unclip connector socket for ABS sensor and brake pad wear indicator -arrow C-.
13.3. Unclip wire harness at the three retaining clips -arrow D-.
14. Pull off connector on left lateral acceleration sensor -14- and circulating pump connector -13-.
Pulling off connector on lateral acceleration sensor
14.1. Release connector on lateral acceleration sensor in the left wheel housing -arrow A- and pull it off -arrow B-.
14.2. Release connector on circulating pump -arrow C- and pull it off -arrow D-.
14.3. Unclip wire harness at the retaining clips -arrows E-.
15. Loosen wire harness on upper left side member.
15.1. Pull wire harness on upper side member down out of the clips -arrows A-.
15.2. Unclip wire harness at the retaining clips -arrows B-.
Loosening wire harness on upper left side member
16. Remove rubber sleeve from the bulkhead -arrow-.
Removing rubber sleeve from the bulkhead
17. Unclip wire harness in plenum panel at the retaining clips -arrows-.
Unclipping wire harness in plenum panel
18. Remove rubber sleeve -19- on the left firewall.
18.1. Remove rubber sleeve on the left firewall in direction of the engine compartment -arrow- and remove the front left wire harness.
Removing rubber sleeve on left firewall
Sub-part - installing wire harness in engine compartment at the front left
Installation position of sub-part - wire harness in front left of engine compartment
1. Fit rubber sleeve -19- on the left firewall -arrow-.
Fitting rubber sleeve on left firewall
1.1. Push front left wire harness through from the engine compartment towards the interior and fit rubber sleeve on the left firewall.
2. Route wire harness in plenum panel and clip it in at the retaining clips -arrows-.
Clipping in wire harness in plenum panel
3. Press rubber sleeve into the bulkhead -arrow-.
Pressing rubber sleeve into bulkhead
4. Secure wire harness on upper left side member.
4.1. Route wire harness and clip it in at the retaining clips -arrows A-.
4.2. Push wire harness on upper side member onto the clips -arrows B-.
Securing wire harness on upper left side member
5. Plug in connector on left lateral acceleration sensor -14- and circulating pump connector -13-.
Plugging in connector on left lateral acceleration sensor
5.1. Plug in connector on lateral acceleration sensor in left wheel housing -arrow A- until the connector engages securely.
5.2. Plug in connector on circulating pump -arrow B- until the connector engages securely.
5.3. Route wire harness and clip it in on the left wheel housing with the three retaining clips -arrows C-.
6. Connect plug connection for ABS sensor and brake pad wear indicator on the left -12-.
Connecting plug connection for ABS sensor and brake pad wear indicator
6.1. Route wire harness and clip it in at the left wheel housing with the retaining clips -arrow A-.
6.2. Clip in connector socket for ABS sensor and brake pad wear indicator -arrow B-.
6.3. Connect plug connection for ABS sensor and brake pad wear indicator -arrow C- until the plug connection engages securely.
7. Plug in connector for additional heating -11- until it engages securely. -> 822019 Removing and installing complete heater - section on "Installing" 822019 Removing and installing complete heater
8. Plug in connector on servo valve -10- until it engages securely.
Plugging in connector on servo valve
9. Plug in connector on angle sensor for range adjustment at the left -9-.
Plugging in connector on angle sensor for range adjustment
9.1. Plug in connectors on angle sensor for range adjustment at the left -arrow A- until the connectors engage securely.
9.2. Secure wire harness on the refrigerant line with a new tie-wrap -arrow B-.
10. Plug in connector on TPM transmitter (trigger) -8- until it engages securely. -> 44361900 Removing and installing transmitter (trigger) for Tyre Pressure Monitoring system (TPM) - section on "Installing" 44361900 Removing and Installing Transmitter (Trigger) For Tire Pressure Monitoring (TPM)
11. Clip in wire harness at the retaining clips close to the mounting for the left headlight -arrows-.
Clipping in wire harness close to mounting for left headlight
12. Connect plug connection for front wire harness -4- and secure ground strap for front cross member -5-.
Connecting plug connection for front wire harness
12.1. Clip connector socket for front wire harness in at the front of the left cross member -arrow A-.
12.2. Plug in connector -arrow B- until it engages securely.
12.3. Connect ground straps together with the twist lock to the threaded bolt -arrow C- and screw on the fastening nut. => Tightening torque: 9 Nm (6.5 ftlb.)
13. Plug in connectors -2 and 3- on fan.
13.1. Plug in connectors on fan -arrows A- until they engage securely.
13.2. Clip in wire harness at the retaining clips -arrows B-.
13.3. Connect ground straps together with the twist lock to the threaded bolt -arrow C- and screw on the fastening nut. => Tightening torque: 9 Nm (6.5 ftlb.)
Plugging in connectors on fan
14. Plug in connectors on airbag sensor at the left -1- until the connectors engage securely. -> 695119 Removing and installing airbag sensor - section on "Installing" 695119 Removing and installing airbag sensor
15. Install left firewall.
Installing firewall
15.1. Fit seal on the body and spray with silicon spray.
15.2. Fit firewall and position it correctly.
15.3. Screw in fastening screws -3-.=> Tightening torque: 9 Nm (6.5 ftlb.)
15.4. Clip in wire harness with the retaining clip -2-.
15.5. Connect oxygen sensor connectors -1- until they engage securely and clip oxygen sensor connectors into the support -1-. -> 246919 Removing and installing oxygen sensor ahead of catalytic converter - section on "Installing" 246919 Removing and installing oxygen sensors ahead of catalytic converter on DFI engines-> 247319 Removing and installing oxygen sensor behind catalytic converter - section on "Installing" 247319 Removing and installing oxygen sensor behind catalytic converter on DFI engines
15.6. Secure PDCC reservoir on the plenum panel.
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.
16. Crimp the lines in area -a- (in cable duct above the pedals).
Connecting and routing front left wire harness
16.1. Cut off lines in different lengths (due to shrink-fit connections).
16.2. Slide shrink-fit hoses onto the lines.
16.3. Strip 10 mm of insulation off the lines.
16.4. Crimp lines using crimping sleeves and the hand crimping pliers from the repair kit for wire harnesses NR.155-1.
16.5. 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 wire harnesses) so that they are watertight.
16.6. Wrap commercially available PVC tape all around the area of the connection points.
16.7. Secure the repaired area -b- to the main wire harness with tie-wraps.
17. Fit cover on cable duct (above the pedals) -arrow-.
Fitting cover on cable duct
Subsequent work
1. Install relay carrier in plenum panel E-box. -> 979019 Removing and installing relay carrier in plenum panel E-box - section on "Installing" 979019 Removing and Installing Relay Carrier, Plenum Chamber E-Box
2. Install wiper motor. -> 921519 Removing and installing wiper motor - section on "Installing" 921519 Removing and installing wiper motor
3. Install air cleaner housing. -> 242519 Removing and installing air cleaner housing - section on "Installing" Service and Repair
4. Install front apron. -> 631519 Removing and installing front apron - section on "Installing"
5. Install main headlight. -> 941519 Removing and installing main headlight - section on "Installing" 94151900 Removing and installing main headlights
6. Install front left wheel housing liner. -> 505619 Removing and installing front wheel housing liner - section on "Installing" Service and Repair
7. Install linings in engine compartment. -> 700219 Removing and installing front cover (engine compartment) - section on "Installing" 700219 Removing and installing front trim (engine compartment)
8. Install the carrier for the instrument panel. -> 701219 Removing and installing carrier for instrument panel - section on "Installing" 701219 Removing and installing bracket for dashboard
9. Carry out work instructions after disconnecting the battery. -> 2706IN Work instructions after disconnecting the battery Procedures