Control Assembly: Service and Repair

WM 870219 Removing and installing air-conditioning system regulator

Tools





Preliminary work

Preliminary work for removing and installing air-conditioning system regulator

1. Remove left and right cover for the centre console. => Removing and installing centre console panel - removing
2. Move gear-shift lever to rear position.

Removing air-conditioning system regulator





Installation position shown on the 911 Cockpit

1. Insert a screwdriver behind the air-conditioning system regulator and prise out.





Levering out air-conditioning system regulator

2. Pull air-conditioning system regulator out of the installation slot.
3. Release and pull off electric plugs -a-.





Unlocking electric plugs

Installing air-conditioning system regulator

1. Insert electric plugs into the air-conditioning system regulator until they are felt to engage.





Inserting electric plugs

2. Slide the air-conditioning system regulator into the installation slot until it clicks into place.





Sliding in air-conditioning system regulator

Subsequent work

Subsequent work for the air-conditioning system regulator

1. Install left and right side cover for centre console. => Removing and installing centre console cover - installing

Coding air-conditioning regulator

Coding the air-conditioning control

Information

If the control unit for the air-conditioning control is replaced, it must be programmed using the PIWIS Tester 9718. This is to adapt the control unit to the vehicle and equipment.

During coding, it is essential to guarantee the power supply for the PIWIS Tester 9718. It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.

The PIWIS Tester 9718 instructions take precedence and in the event of a discrepancy these are the instructions that must be followed. Deviations may occur with later software versions.

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

1. Connect the PIWIS Tester 9718 to the vehicle and start the System Tester. Switch on ignition. >> continue.
2. Select vehicle type using the cursor keys. >> continue.
3. Select air conditioner with the cursor keys and press the >> key.
4. Select Control unit replacement with the cursor keys and press the >> key.
5. Select Read out values (codings) with the cursor keys and press the >> key.
6. The message Codes successfully read out appears on the screen of the Porsche System Tester. Press >>.
7. Switch off ignition, replace air conditioning control.
8. Switch to the Special functions menu and perform the vehicle handover using the F8 key.
9. In the Special functions menu, erase All fault memories by pressing >>.
10. Carry out automatic search of control units.
11. In the menu Write in data >> , the data read-out is installed.
12. System Tester displays Codes successfully written in. Press >>.
13. Select System test with the cursor keys and press the >> key.
14. The Tester starts the system test, follow the instructions on the Tester.
15. Quit menu, carry out a test drive, and check operation of the air conditioning control. Read out fault memory.