Body - Rear Spoiler Malfunctions
911 Turbo (996)3/05 ENU 6672
Date: Dec 15, 2005
Malfunctions In The Rear Spoiler Drive
Vehicle Type:
911 Turbo (996)/911 Turbo S (996)
Model Year:
As of 2001
This Relates To:
Rear spoiler drive.
Situation:
Malfunctions in the rear spoiler drive.
Below you will find information on causes and remedial actions for the following malfunctions in the rear spoiler drive.
^ Warning message "Failure of spoiler control" in the display panel of the on-board computer/fault code 9150 in the instrument cluster fault memory --> see Step 1.
^ Rear spoiler will not extend --> see Step 2.
^ Rear spoiler only extends on one side --> see Step 3.
^ Rear spoiler extends or retracts unevenly --> see Step 4.
Work Procedure:
Complaint
1 Warning message "Failure of spoiler control" in the display panel of the on-board computer/fault code 9150 - "Rear wing control" in the instrument cluster fault memory.
The warning message "Failure of spoiler control" appears if the rear spoiler
- does not extend at a speed of > 75 mph (120 km/h)
- does not retract at a speed of < 38 mph (60 km/h)
- does not reach its end position
Remedial action
1.1 Switch on ignition.
1.2 Extend the rear spoiler manually. To do this, press the rocker switch in the dashboard trim panel, see Owner's Manual, chapter entitled "Controls, Safety, Instruments - Extending rear spoiler". Get a second person to observe the extending action of the rear spoiler.
--> Rear spoiler extends normally, continue with Step 1.3.
--> Rear spoiler will not extend, continue with Step 2.3.
--> Rear spoiler only extends on one side, continue with Step 3.3.
-- Rear spoiler extends or retracts unevenly, continue with Step 4.
1.3 Retract the rear spoiler manually. To do this, press and hold down the rocker switch in the dashboard trim panel until the rear spoiler retracts fully. Observe the rear spoiler as it retracts.
--> Rear spoiler retracts unevenly, continue with Step 4.
--> Rear spoiler retracts normally --> Check the microswitch for monitoring the upper and lower end position of the rear spoiler, see POSES, Diagnosis - 9025 Instrument cluster, fault code 9150 - "Spoiler control."
1.4 Once you have completed the checks or carried out repairs on the rear spoiler drive, perform a function test. To do this, extend and then retract the rear spoiler manually using the rocker switch in the dashboard trim panel.
1.5 Read out the instrument cluster fault memory with the PIWIS Tester and erase it if necessary.
1.6 Extend and retract the rear spoiler manually using the rocker switch, then read out the instrument cluster fault memory again to ensure that no more faults are stored.
--> End of remedial action
Work Procedure:
Complaint
2 Rear spoiler will not extend.
Remedial action
2.1 Switch on ignition.
2.2 Extend the rear spoiler manually. To do this, press the rocker switch in the dashboard trim panel, see Owner's Manual, chapter entitled "Controls, Safety, Instruments - Extending rear spoiler".
2.3 Wait for about one minute and then check the position of the rear spoiler again.
--> Rear spoiler does not extend --> Check the function of the hydraulic pump for the rear spoiler drive, see Step 2.4.
2.4 Get a second person to check whether operating noises can be heard from the drive motor of the rear spoiler drive hydraulic pump and that the drive motor of the hydraulic pump is running when you press the left half of the rocker switch (extending rear spoiler).
--> Drive motor is not running --> Check electrics as described in POSES, Diagnosis - 9025 Instrument cluster, fault code 9150 - "Spoiler control".
--> Electric drive motor is running, rear spoiler does not extend --> Check hydraulic pump for signs of leaking fluid (Pentosin), see Step 2.5 - "Preliminary work".
2.5 Preliminary work
2.5.1 Remove rear spoiler, --> Workshop Manual "6658 Removing and installing rear spoiler section on Removing".
2.5.2 At the inside of the engine compartment lid, remove the air guide and fan together with the fan housing and loosen the bracket. To do this, complete Steps 6 to 8 in Workshop Manual "5590 Disassembling and assembling rear lid - section on "Disassembling"".
2.6 Check hydraulic pump for signs of fluid loss (Pentosin).
--> Signs of fluid loss on hydraulic pump --> The hydraulic pump is defective and must be replaced, see procedure description starting from Step 2.7.
--> No signs of fluid loss on hydraulic pump --> The rear spoiler drive mode is defective and must be replaced, see procedure description starting from Step 2.8.
2.7 Replace hydraulic pump.
2.7.1 Remove rear spoiler drive module, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Disassembling"", Step 9.
2.7.2 Remove hydraulic pump from rear spoiler drive module, --> Workshop Manual "6672 Disassembling and assembling pump unit", section on "Removing pump".
Note
When replacing the hydraulic pump, also replace the hydraulic lines, banjo bolts and sealing rings.
2.7.3 Install new hydraulic pump, Part No. --> 996.512.943.01 together with the new hydraulic lines into the rear spoiler drive module, --> Workshop Manual "6672 Disassembling and assembling pump unit". section on "Installing pump".
2.7.4 Install rear spoiler drive module, --> Workshop Manual "5590 Disassembling and assembling rear lid-section on "Assembling"", Step 2.
Then continue with Step 2.9 - "Subsequent work".
2.8 Replace rear spoiler drive module.
2.8.1 Remove rear spoiler drive module, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Disassembling"", Step 9.
Note
When replacing the rear spoiler drive module, observe the assignment of drive module, relays and instrument cluster, --> Workshop Manual "6672 Assignment of spoiler drive, relays and instrument cluster".
2.8.2 Install new rear spoiler drive module, Part No. --> 996.512.241.01, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Assembling"" Step 2.
Then continue with Step 2.9 - "Subsequent work".
2.9 Subsequent work
2.9.1 At the inside of the engine compartment lid, install the bracket, the fan together with the fan housing and the air guide. To do this, complete Steps 3 to 5 in --> Workshop Manual "5590 Disassembling and assembling rear lid section on "Assembling"".
2.9.2 Install rear spoiler, --> Workshop Manual "6658 Removing and installing rear spoiler. section on "Installing"".
2.9.3 Check the function of the rear spoiler drive. To do this, extend and then retract the rear spoiler manually using the rocker switch in the dashboard trim panel.
2.9.4 Read out the instrument cluster fault memory with the PIWIS Tester and erase it if necessary.
2.9.5 Extend and retract the rear spoiler manually using the rocker switch, then read out the instrument cluster fault memory again to ensure that no more faults are stored
--> End of remedial action
Work Procedure:
Complaint
3 Rear spoiler extends on one side.
^ One hydraulic cylinder extends.
^ The other hydraulic cylinder does not extend.
Remedial action
3.1 Switch on ignition.
3.2 Extend the rear spoiler manually. To do this, press the rocker switch in the dashboard trim panel, see Owner's Manual, chapter entitled "Controls, Safety, Instruments-Extending rear spoiler". Get a second person to observe the extending action of the rear spoiler.
3.3 Wait for about one minute and then check the position of the rear spoiler again.
--> Rear spoiler has only extended on one side --> check for signs of leaking fluid (Pentosin) on the hydraulic cylinder that did not extend, see procedure description starting from Step 3.4 - "Preliminary work".
3.4 Preliminary work
3.4.1 Retract the rear spoiler manually. To do this, press and hold down the rocker switch until the rear spoiler retracts fully.
3.4.2 Remove rear spoiler, Workshop Manual "6658 Removing and installing rear spoiler section on "Removing"".
3.4.3 At the inside of the engine compartment lid, remove the air guide and fan together with the fan housing and loosen the bracket. To do this, complete Steps 6 to 8 in --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Disassembling"".
3.5 Check the hydraulic cylinder, which did not extend before, for signs of leaking fluid (Pentosin).
--> Signs of fluid loss on hydraulic cylinder --> The hydraulic cylinder is defective and must be replaced, see Step 3.6.
--> No signs of fluid loss on hydraulic cylinder --> The rear spoiler drive is defective and must be replaced, continue with Step 3.7.
3.6 Replace defective hydraulic cylinder.
3.6.1 Remove rear spoiler drive module, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Disassembling"", Step 9.
3.6.2 Remove defective hydraulic cylinder from rear spoiler drive module, --> Workshop Manual "6672 Disassembling and assembling pump unit", section on "Removing hydraulic cylinder".
Note
When replacing the hydraulic cylinder, also replace the hydraulic lines, banjo bolts and sealing rings.
Note
If the right hydraulic cylinder is defective, remove the microswitch for the rear spoiler on the old hydraulic cylinder and fit it on the new hydraulic cylinder, --> Workshop Manual "6685 Removing and installing microswitch for rear spoiler".
3.6.3 Install new hydraulic cylinder, Part No. --> 996.512.951.01 (left) and --> 996.512.952.01 (right) together with the new hydraulic lines into the rear spoiler drive module, Workshop Manual "6672 Disassembling and assembling pump unit" - section on "Filling the hydraulic cylinder" and "Installing hydraulic cylinder".
3.6.4 Install rear spoiler drive module, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Assembling"" Step 2.
Then continue with Step 3.8 - "Subsequent work".
3.7 Replace rear spoiler drive module.
3.7.1 Remove rear spoiler drive module, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Disassembling"", Step 9.
Note
When replacing the rear spoiler drive module, observe the assignment of drive module, relays and instrument cluster, --> Workshop Manual "6672 Assignment of spoiler drive, relays and instrument cluster".
3.7.2 Install new rear spoiler drive module, Part No. --> 996.512.241.01, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Assembling"", Step 2.
Then continue with Step 3.8 - "Subsequent work".
3.8 Subsequent work
3.8.1 At the inside of the engine compartment lid, install the bracket, the fan together with the fan housing and the air guide. To do this, complete Steps 3 to 5 in --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Assembling"".
3.8.2 Install rear spoiler, --> Workshop Manual "6658 Removing and installing rear spoiler - section on Installing""
3.8.3 Check the function of the rear spoiler drive. To do this, extend and then retract the rear spoiler manually using the rocker switch in the dashboard trim panel.
3.8.4 Read out the instrument cluster fault memory with the PIWIS Tester and erase it if necessary.
3.8.5 Extend and retract the rear spoiler manually using the rocker switch, then read out the instrument cluster fault memory again to ensure that no more faults are stored.
--> End of remedial action
Work Procedure:
Complaint
4 Rear spoiler extends and/or retracts unevenly.
Remedial action
4.1 Switch on ignition.
4.2 Extend and then retract the rear spoiler manually using the rocker switch in the dashboard trim panel, see Owner's Manual, chapter entitled "Controls, Safety, Instruments - Extending rear spoiler". While doing this, get a second person to observe the extending/retracting action of the rear spoiler.
--> Rear spoiler extends and/or retracts unevenly.
Possible causes of fault:
^ The pipes in the hydraulic cylinders are dirty and as a result, cannot move freely.
^ The rear spoiler drive was installed too tightly.
^ The rear spoiler drive is defective.
4.3 Pipes in the hydraulic cylinders are dirty.
4.3.1 Extend the rear spoiler manually. To do this, press the rocker switch in the dashboard trim panel, see Owner's Manual, chapter entitled "Controls, Safety, Instruments - Extending rear spoiler".
4.3.2 With the rear spoiler extended, clean dirty pipes in the hydraulic cylinders with a suitable cleaning agent (e.g. insect remover), then wash them with a sponge and clean water and dry them off with a cloth.
4.3.3 Check the function of the rear spoiler drive. To do this, extend, retract and then extend the rear spoiler again manually using the rocker switch in the dashboard trim panel.
--> Rear spoiler extends and retracts evenly on both sides --> Continue with Step 4.6.4.
--> Rear spoiler extends or retracts unevenly --> Continue with Step 4.4.
4.4 Rear spoiler drive was installed too tightly.
4.4.1 Retract the rear spoiler manually - if it is extended. To do this, press and hold down the right half of the rocker switch in the dashboard trim panel until the rear spoiler is retracted.
4.4.2 Open the engine compartment lid, loosen the screws on the affected hydraulic cylinder ( Figure 7-Item A or Item B-) and correct the installation position by moving the hydraulic cylinder sideways. Then tighten the hydraulic cylinder again. Tightening torque 10 (7.5 ftlb.) Nm.
4.4.3 Close the engine compartment lid and check the function of the rear spoiler drive. To do this, extend and then retract the rear spoiler manually using the rocker switch in the dashboard trim panel.
--> Rear spoiler extends and retracts properly --> Continue with Step 4.6.4.
--> Rear spoiler extends or retracts unevenly --> Continue with Step 4.5.
4.5 Rear spoiler drive is defective.
4.5.1 Remove rear spoiler, --> Workshop Manual "6658 Removing and installing rear spoiler-section on "Removing"".
4.5.2 At the inside of the engine compartment lid, remove the air guide and fan together with the fan housing and loosen the bracket. To do this, complete Steps 6 to 8 in --> Workshop Manual "5590 Disassembling and assembling rear lid-section on "Disassembling"".
4.5.3 Remove rear spoiler drive module, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Disassembling"", Step 9.
Note
When replacing the rear spoiler drive, observe the assignment of rear spoiler drive, relays and instrument cluster, Workshop Manual "6672 Assignment of spoiler drive, relays and instrument cluster".
4.5.4 Install new rear spoiler drive module, Part No. --> 996.512.241.01, --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Assembling"" Step 2.
Then continue with Step 4.6 - "Subsequent work".
4.6 Subsequent work
4.6.1 At the inside of the engine compartment lid, install the bracket, the fan together with the fan housing and the air guide. To do this, complete Steps 3 to 5 in --> Workshop Manual "5590 Disassembling and assembling rear lid - section on "Assembling"".
4.6.2 Install rear spoiler, --> Workshop Manual "6658 Removing and installing rear spoiler-section on Installing""
4.6.3 Check the function of the rear spoiler drive. To do this, extend and then retract the rear spoiler manually using the rocker switch in the dashboard trim panel.
4.6.4 Read out the instrument cluster fault memory with the PIWIS Tester and erase it if necessary.
4.6.5 Extend and retract the rear spoiler manually using the rocker switch, then read out the instrument cluster fault memory again to ensure that no more faults are stored.
--> End of remedial action
References:
--> POSES, Diagnosis 9025 Instrument cluster, fault code 9150-Spoiler control".
--> Workshop Manual "5590 Removing and installing rear lid".
--> Workshop Manual "5590 Disassembling and assembling rear lid"
--> Workshop Manual "6658 Removing and installing rear spoiler".
--> Workshop Manual "6672 Disassembling and assembling pump unit".
--> Workshop Manual "6672 Assignment of spoiler drive, relays and instrument cluster".
--> Workshop Manual "6685 Removing and installing microswitch for rear spoiler"
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