Ride Control Solenoid Valve: Service and Repair
WM 430455 Replacing FA and RA valve block (PDCC)
Preliminary work for FA and RA valve block
Preliminary work for FA valve block
For more information, see: -> 4303IN Component arrangement for Porsche Dynamic Chassis Control (PDCC) 4303IN Porsche Dynamic Chassis Control (PDCC) component arrangement
View of FA valve block
1. Raise the vehicle -> 4000V000 Lifting the vehicle and remove right front wheel -> 44051900 Removing and installing wheel Removal and Replacement.
2. Remove wheel housing liner -> 505619 Removing and installing front wheel housing liner Service and Repair.
Preliminary work for RA valve block
For more information, see: -> 4303IN Component arrangement for Porsche Dynamic Chassis Control (PDCC) 4303IN Porsche Dynamic Chassis Control (PDCC) component arrangement
1. Raise the vehicle. -> 4000V000 Lifting the vehicle
General warning notes
Warning notes
CAUTION
Twisted, chafed and kinked steel flexi-pipes and/or expansion hoses.
- Risk of PDCC system failure due to reduced line cross sections and leaking lines.
-> Steel flexi-pipes and expansion hoses must not be disconnected or kinked.
-> Always replace steel flexi-pipes and expansion hoses if you suspect that they have been damaged.
-> Twisted steel flexi-pipes and expansion hoses must not be fitted.
-> Steel flexi-pipes and expansion hoses must have sufficient clearance from other components.
-> Steel flexi-pipes and expansion hoses must only be fitted using the mounting elements provided for this purpose. Do not use tie-wraps or screw-type clamps.
Information
Before starting to work on the PDCC system, always clean the underbody or at least clean the system components you will be working on. Ensure absolute cleanliness at all times. In other words:
- Clean the system components to be removed using a power washer, for example. Ensure that the high-pressure spray is at least 50 cm away from the component (risk of damage to electric lines, connectors and contacts).
- Before loosening the hydraulic connections, the areas around the connections must also be cleaned carefully (e.g. using a brush and/or a lint-free cloth).
- If you intend to use the component again, the openings must be sealed immediately with suitable stoppers.
- If you are using new components, the stoppers must only be removed immediately before fitting.
Replacing valve block
Replacing front valve block
For more information, see: -> 4303AW Safety requirements for Porsche Dynamic Chassis Control (PDCC) Service Precautions-> 4303IN Component arrangement for Porsche Dynamic Chassis Control (PDCC) 4303IN Porsche Dynamic Chassis Control (PDCC) component arrangement
If a component is replaced, the reservoir (PDCC) must always be replaced as well. -> 430955 Replacing reservoir (PDCC) Service and Repair
The engine must be switched off. (The pressure in the PDCC system is high when the engine is running.).
1. Unclip the combination connector -arrow-.
Combination connector
2. Disconnect the hydraulic connections (use a suitable collecting container). Seal the lines with suitable and clean (.) stoppers -arrows-.
Disconnecting PDCC lines
3. Unscrew valve block fastening screws -arrows- and remove the valve block.
Valve block mounting
4. When replacing the valve block wiring harness: Number the valves and pressure sensors (using a felt-tip pen, for example). Push back the insulator slightly and assign the cable colours to the corresponding valves/pressure sensors.
5. Remove the wiring harness. Pull off the connectors on the valves/pressure sensors. Fit the wiring harness onto the new valve block.
6. Installation is performed in reverse order. -> 430455 Replacing valve block - section on "General warning notes" Observe correct tightening torques. -> 4300TW Tightening torques
Replacing rear valve block
For more information, see: -> 4303AW Safety requirements for Porsche Dynamic Chassis Control (PDCC) Service Precautions-> 4303IN Component arrangement for Porsche Dynamic Chassis Control (PDCC) 4303IN Porsche Dynamic Chassis Control (PDCC) component arrangement
If a component is replaced, the reservoir (PDCC) must always be replaced as well. -> 430955 Replacing reservoir (PDCC) Service and Repair
1. Remove the valve block cover -arrow-.
RA valve block cover (PDCC)
2. Disconnect the combination connector. To do this, carefully open the cable duct if necessary -arrow-.
Disconnecting combination connector for RA valve block (PDCC)
3. Disconnect the two hydraulic connections -arrows- at the front and the two hydraulic connections at the rear, not shown (use a suitable collecting container). Seal the lines with suitable and clean (.) stoppers.
Disconnecting lines for RA valve block (PDCC)
4. Unscrew valve block fastening screws and carefully remove the valve block.
5. When replacing the valve block wiring harness: Number the valves and pressure sensors (using a felt-tip pen, for example). Push back the insulator slightly and assign the cable colours to the corresponding valves/pressure sensors.
6. Remove the wiring harness. Pull off the connectors on the valves/pressure sensors. Fit the wiring harness onto the new valve block.
7. Installation is performed in reverse order. -> 430455 Replacing valve block - section on "General warning notes" Observe correct tightening torques. -> 4300TW Tightening torques
Subsequent work
Subsequent work for FA valve block
1. Install wheel housing liner -> 505619 Removing and installing front wheel housing liner Service and Repair and fit front wheel. -> 44051900 Removing and installing wheel Removal and Replacement
2. Top up and check the fluid level. -> 430501 Checking fluid level (PDCC) 430501 Checking fluid level (PDCC)
3. Allow the engine to run for approx. 10 minutes (scavenging the system). Then connect the PIWIS Tester.
4. Select the Cayenne PDCC menu item and work through the following points in sequence. Follow the instructions on the PIWIS Tester:
- Calibration >> Pressure sensor calibration.
- Perform reset.
- Select Drive links >> Valve timing.
- Select Drive links >> Bleed. -> 430307 Bleeding Porsche Dynamic Chassis Control (PDCC) 430307 Bleeding Porsche Dynamic Chassis Control (PDCC)
- Drive links >> Perform system test.
- Read out and erase fault memory.
- Perform a test drive.
- Read out the fault memory again.
5. Fit trim panel at the left and rear. -> 700219 Removing and installing front trim (engine compartment) Service and Repair
Subsequent work for RA valve block
1. Top up and check the fluid level. -> 430501 Checking fluid level (PDCC) 430501 Checking fluid level (PDCC)
2. Allow the engine to run for approx. 10 minutes (scavenging the system). Then connect the PIWIS Tester.
3. Select the Cayenne PDCC menu item and work through the following points in sequence. Follow the instructions on the PIWIS Tester:
- Calibration >> Pressure sensor calibration.
- Perform reset.
- Select Drive links >> Valve timing.
- Select Drive links >> Bleed. -> 430307 Bleeding Porsche Dynamic Chassis Control (PDCC) 430307 Bleeding Porsche Dynamic Chassis Control (PDCC)
- Drive links >> Perform system test.
- Read out and erase fault memory.
- Perform a test drive.
- Read out the fault memory again.
4. Fit trim panel at the left and rear. -> 700219 Removing and installing front trim (engine compartment) Service and Repair