Reading And Writing Values
NOTE:
Voltage drop
- Risk of irreparable damage to control unit
- Risk of damage to control unit
- Fault entries in the control unit
- Coding in the control unit is aborted
- Malfunctions in control unit, even during programming
→ Prior to disconnecting the control unit, switch off ignition and remove ignition key.
→ Ensure that the power supply is not interrupted during programming.
→ Connect a battery charger with a current rating of at least → Nominal value: 40 A to the vehicle battery.
Information
- If a new PCM/CDR is to be installed in a vehicle, the enabling code specified in the PIWIS information system must be used.
- You can get the codes from the PIWIS Infosystem or from your importer by specifying the vehicle identification number.
- During coding, it is essential to guarantee the power supply for the PIWIS Tester II 9818 . A battery charger with a current rating of at least 40 A must be connected to the vehicle battery.
- The PIWIS Tester II 9818 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 may appear in the PIWIS Tester II 9818 or additional information/steps may be displayed or required.
- Connect the PIWIS Tester to the vehicle and start the Tester. Switch on ignition.
- Select the vehicle type and start the diagnostic application.
- Select the required control unit CDR in the overview .
- Select Maintenance/repairs .
- Select Control unit replacement and press [F12].
- Read data and press [F12].
- Press [F8] to start reading out data.
- Check the chassis number and press [F12].
- Switch off ignition and replace the control unit. → 912419 REMOVING AND INSTALLING CAR RADIO .
- Switch on ignition. Select the Write data menu (procedure described above), press [F12] and then press [F8] to start installing the data that was read out.
- The Tester displays the message Data has been written . Press [F12] to continue.
- Read out the fault memory and erase it if necessary.
- Select Function activation
in the Maintenance/repairs
menu and press [F12].
- 13.1. The PIWIS Tester displays all the possible enabling codes.
- 13.2. Using the vehicle-specific codes from the PIWIS information system, click on the menus, enter the relevant enabling code and press [F8] to start coding.
- Check the audio and telephone functions, depending on vehicle equipment.
- Read out the fault memory on the CDR unit.