Conversion of Rate-of-Turn Sensor
Conversion of rate-of-turn sensorTwo versions of the rate-of-turn sensor have been installed for the PSM (Porsche Stability Management) system in the 911 Turbo (996) since the production launch of this vehicle. The first version -A- with part number 996.606.147.00 and the new/current version -B- with part number 996.606.145.00.
Note:
^ The transverse acceleration sensor is integrated in the rate-of-turn sensor.
First version: Rate-of-turn sensor with part No. 996.606.147.00
After supplies of the old sensor have been used up, install the new rate-of-turn sensor with part number 996.606.145.00!
New/current version: Rate-of-turn sensor with part No. 996.606.145.00.
Introduced in production shortly prior to the end of model year 2000. The new/current rate-of-turn sensor can be retrofitted. The following instructions describe the conversion.
Overview of rate-of-turn sensor conversion
In case of first-time installation of the new/current rate-of-turn sensor, the front center console support -1and the holder -2- must be replaced. The following parts are omitted: The bow -4- over the rate-of-turn sensor -3- and the cable guide -5-. The adapter plug -X- must be installed between the plug -6- and the rate-of-turn sensor -3-.
1 Front center console support
2 Holder
3 Rate-of-turn sensor
4 Bow over rate-of-turn sensor
5 Cable guide
6 Plug (item X = adapter plug that is installed between the new rate-of-turn sensor and the existing plug).
The table for the 911 Turbo (996) provides an overview of the part allocation for replacement of a rate-of-turn sensor 996.606.147.00 (first version).
Note:
^ The adapter plug is necessary because the plug and the connector assignment have changed as well!
Removal
Caution:
Danger of damage!
^ The negative terminal of the battery must be disconnected before the airbag control unit is removed!
^ Never disconnect battery with engine running!
^ Never start engine without securely connected battery!
^ Never use a boost charger to start the engine!
^ Never pull off or push on the wiring harness plugs of the control modules or other electronic components when the ignition is switched on!
1. Move the front seats into the rear seat position.
2. Disconnect the ground wire of the battery and cover the terminal or battery.
3. Remove side-panel lining in front of the center console on the left -A- and right.
4. Remove center console front part -B-. Removing and installing center console (front part). Then remove center console -C-.
5. Remove cable guide for the rate-of-turn sensor and remove the front center console support -arrows-.
6. On Tiptronic vehicles, disengage (loosen) the keylock cable -5- on the selector lever: To do this
- Press the retaining clip -4- together and carefully pull the adjuster -3- upward out of the support bracket.
- Disengage cable nipple -1- on the keylock lever -2-.
7. Unlock plug of the rate-of-turn sensor with the ignition switched off -arrow on the plug- and pull it off. Undo fastening nuts -arrows- and remove the rate-of-turn sensor with bow.
Note:
^ Pull at the plug housing only! Never pull the electrical connections!
8. Remove the airbag control module.
Note:
^ Socket wrench insert 9259 is required for removal and installation of the airbag triggering unit.
9. Undo the fastening screws -arrows- on both sides and remove the holder -2-. To do this, guide the electrical wiring and, if necessary, the keylock cable through the holder opening.
Fitting
Caution:
^ The rate-of-turn sensor is a micro-mechanical component and is very sensitive to impacts!
1. Install new/current holder -B- dimension X = approximately 60 mm (6 fastening screws). Dimension X of the holder for the first version -A- is approximately 110 mm. To do this, guide the electrical wiring and, if necessary, the keylock cable through the holder opening. Fit the plastic clips and the clips from the old holder on the new holder.
2. Install airbag control unit. Use new shear-off nuts.
Tightening torque of the M6 hexagon nut: 10 Nm (7.5 ft. lbs.)
3. On Tiptronic vehicles, engage (fasten) the keylock cable on the selector lever. To do this, engage the cable nipple -1- on the keylock lever -2-. Press housing for adjuster -3- into the support bracket until the retaining clip -4- engages.
Note:
^ The new rate-of-turn sensor has a different plug and a different connector assignment. For this reason, it is necessary to fit an adapter plug (adapter lead with plugs) between the new rate-of-turn sensor and the existing plug!
4. Install the adapter plug (adapter lead with plugs) and the rate-of-turn sensor. To do this:
- Connect the plug on the adapter lead -X- to the existing plug -6-. Then secure this plug connection firmly to the red lead -A- with a tie-wrap -B- so that it can not slip.
- Fit rate-of-turn sensor (new/current version) -3- part no. 999.606.145.00. First, feed (route) the adapter lead -X- under the rate-of-turn sensor -3-. Then connect the plug -arrow- on the adapter lead -X- to the rate-of-turn sensor -3-.
Note:
^ There is no bow over the new rate-of-turn sensor!
5. Prepare new/current support -B- (with dimension X = approximately 8 mm) for installation. Distinguishing characteristics: Dimension X and diameter of the hole -arrows-. Dimension X of the holder for the first version -A- approximately 12 mm.
6. Install new/current support -B-.
7. Install center console -C-. Then install center console front part -B-.
8. Install side panel linings in front of the center console.
9. Connect battery ground cable.
10. Code the radio and PCM.
11. Carry out the following tests:
- Read out and erase the fault memories of the airbag, PCM and PSM control modules with the Porsche System Tester 2. Additionally perform the static test in the PSM system.
- Then start the engine. The PSM-related lights in the instrument cluster must go out when the engine is running.
- Read out the PSM fault memory again. There must not be any stored faults.