453055 Replacing hydraulic unit/control unit
[WM 453055 Replacing hydraulic unit/control unit
Tools
Information
NOTICE
Replacing the hydraulic unit/control unit
- The hydraulic unit forms a single unit with the control unit.
- The hydraulic unit and control unit are always replaced together.
- When replacing the hydraulic unit/control unit, the new assembly must be to hand before the old one is removed.
- The data as well as the coding of the old control unit must be transferred to the new unit before the old one is removed.
- The hydraulic unit/control unit must be calibrated (calibration of hydraulic unit/control unit with combination sensor). Without calibrating, the PSM will have incorrect values or no values.
-> Procedure
-> The Porsche System Tester must not be disconnected from the diagnostic socket when replacing the hydraulic unit.
-> Read out data from old hydraulic unit/control unit. Switch off the ignition. Pull off connector for hydraulic unit and connect connector to the new hydraulic unit. Switch on ignition. Transfer data.
Coding and calibrating hydraulic unit/control unit
Coding hydraulic unit/control unit
Information
Always read the information section. -> 453055 Replacing hydraulic unit/control unit - section on "Information"
- If the hydraulic unit is replaced, the control unit of the hydraulic unit must be coded and calibrated.
- When replacing the hydraulic unit, there are a number of ways to code the hydraulic unit/control unit.
1. - Control unit replacement
2. - Automatic coding using coding rules
3. - Manual coding of hydraulic unit using coding rules from the >vehicle I-Pass<
Information
If the hydraulic unit is replaced, the PSM control unit must be coded using the Porsche System Tester. Hydraulic unit and PSM control unit form one unit.
1. Control unit replacement
> Control unit overview
> PSM
> Maintenance/repair
> Control unit replacement
Continue from step 2 if the control unit is faulty (electrical fault) and cannot be read out.
2. Automatic coding of hydraulic unit
> Control unit overview
> PSM
> Codings/adaptations
> Automatic coding
If faults or discrepancies occur during automatic coding, carry out the >manual coding of the hydraulic unit< (see step 3 below).
3. Manual coding of hydraulic unit using coding rules from the >vehicle I-Pass<
Prepare the vehicle data (coding rules) from the >vehicle I-Pass<.
Carry out the [ manual coding of hydraulic unit ] using coding rules from the [ vehicle I-Pass].
> Control unit overview
> PSM
> Codings/adaptations
> Manual coding with coding rules
> Product code
Select engine version > F12
Select equipment > >
This completes the manual coding.
Calibrating hydraulic unit/control unit
Information
Always read the information section. -> 453055 Replacing hydraulic unit/control unit - section on "Information"
- If the hydraulic unit is replaced, the control unit of the hydraulic unit must be coded and calibrated.
1. Calibrate the combination sensor (includes lateral and axial acceleration sensor and yaw rate sensor) with the help of the PIWIS Tester II 9818.
To do this, go to the menu:
> Control unit overview
> PSM
> Drive links/tests
> Calibration of combination sensor
This completes the calibration.