Operation CHARM: Car repair manuals for everyone.
Home >> Porsche >> 2008 >> Cayenne Turbo (9PA) V8-4.8L Turbo >> Repair and Diagnosis >> Restraints and Safety Systems >> Relays and Modules - Restraints and Safety Systems >> Air Bag Control Module >> Service and Repair

Air Bag Control Module: Service and Repair


WM 696819 Removing and installing AWS control unit

Tools





Technical values






Preliminary work

Preliminary work for AWS control unit

Move passenger's seat forward and up.

Removing AWS control unit





Installation position

1. Switch off ignition and remove ignition key.
2. Unscrew the three fastening nuts -1- on the cover of the AWS control unit and remove the cover -2-.





Removing the cover

3. Remove AWS control unit from support, release the two electric connectors -a- and pull them off the control unit.





Unplugging electric connectors

Removing support for AWS control unit

Information

This is only necessary if the telephone, Tiptronic and transfer box control unit has to be removed.

1. Remove the support for the AWS control unit -Arrow-.





Removing support for AWS control unit

Installing support for AWS control unit

Information

This is only necessary if the telephone, Tiptronic and transfer box control unit has been removed and re-installed.

When inserting the support, ensure that the two sheetmetal lugs a engage in the slots in the holder.

1. Insert the support for the AWS control unit -Arrow-.





Installing support for AWS control unit

Installing AWS control unit

1. Switch off ignition and remove ignition key.
2. Connect the two electric connectors to the control unit until they are felt to engage.





Plugging in electric connectors

3. Place AWS control unit on the support, position cover -2- and secure with the three fastening nuts -1-.





Screwing down cover

Subsequent work

Subsequent work for AWS control unit

Move passenger's seat to position required by customer.

Program AWS control unit. -> 696819 Removing and installing AWS control unit - section on "Programming"

Programming AWS control unit

Information

The PIWIS Tester 9718 instructions take precedence since the description may be different with later Tester releases.

The procedure described here has been structured in general terms; different text or additions may appear in the PIWIS Tester 9718.

1. Replace control unit. -> 696819 Removing and installing AWS control unit - section on "Installing"

WARNING

Sudden voltage interruption of the power supply to the control module.

- Destruction of the control module.

-> During programming, it is essential to guarantee the power supply for the Porsche System tester. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.
-> Prior to disconnecting the control module, switch off the ignition and remove the ignition key.

2. Connect battery charger to the vehicle. Move passenger's seat longitudinally until flush with the seat rails and to its lowest position.
3. Connect the Porsche System Tester PIWIS Tester 9718 to the vehicle and start the System Tester. Switch on ignition. Press >> to continue.
4. Select vehicle type.
5. Switch from the vehicle type to the list of control units by pressing >>.
6. Select AWS with the cursor keys and press the >> key.
7. Select Control unit replacement with the cursor keys and press the >> key.
8. The Tester displays several messages and instructions relating to the individual work steps until the message Control unit replacement was completed successfully appears. Press >>.
9. Select the Fault memory menu in the AWS control unit. If faults are present, erase the fault memory.
10. Exit the AWS control unit and switch to the Airbag control unit.
11. Select the Teach AWS menu and press >>.
12. Switch off the ignition when the Tester displays the prompt Switch off ignition.
13. Switch on the ignition when the Tester displays the prompt Switch on ignition.
14. When the Tester displays the message AWS was taught successfully , press >>.
15. Exit the Airbag control unit and switch to the AWS control unit.

Information

A system test can only be performed successfully if:

- The AWS control unit has been taught on the airbag control unit.

- There are no faults in the AWS and airbag control unit.

16. Select the System test menu in the AWS control unit.
17. Follow the instructions on the Tester. Press >> and perform the test using the default sequence.
17.1. Seat empty - the passenger's seat must be empty. The Passenger Airbag Off indicator light in the centre console must not come on. To determine the status, press F7 or F8. Then press >>.
17.2. Child - place the special tool test weight P 9742 on the passenger's seat. The Passenger Airbag Off indicator light in the centre console must come on. To determine the status, press F7 or F8. Then press >>.
17.3. Adult - get an assistant, for example, to sit on the passenger's seat. The Passenger Airbag Off indicator light in the centre console must not come on. To determine the status, press F7 or F8. Then press >>.
17.4. Seat jammed - the passenger's seat must be empty. The seat must also be relieved of any pressure, e.g. by lifting the seat up with your hand. The Passenger Airbag Off indicator light in the centre console must come on. In addition to the Airbag Off indicator light, a message is displayed in the instrument cluster: Check passenger seat adjustment. To determine the status, press F7 or F8. Then press >>.
18. To check the system, select the Actual values menu under the AWS control unit. Then press >>.
18.1. Select the Weight group (0-4) and Gross weight calibrated options.
18.1.1. If there is no weight on the passenger's seat, compare values (see table below) using the PIWIS Tester. The Passenger Airbag Off indicator light in the centre console must not come on.
18.1.2. Place the special tool test weight P 9742 on the passenger's seat. The Passenger Airbag Off indicator light in the centre console must come on. Compare values (see table below) using the PIWIS Tester.
18.1.3. Get an assistant with a body weight of more than 55 kg, for example, to sit on the passenger's seat. The Passenger Airbag Off indicator light in the centre console must not come on. Compare values (see table below) using the PIWIS Tester.






19. Read out and erase the fault memories in the Airbag and AWS control unit, perform a test drive and then read out the fault memories again. If faults are found, determine the cause using the PIWIS Tester and correct the faults.
pro multis · About Operation CHARM