Replacing Pcm Display And Operator Control Unit
NOTE:
Voltage drop
- Irreparable damage to control unit
- Damage to control unit
- Fault entries in the control unit
- Control unit programming/coding is aborted
- Malfunctions in the control unit, even during programming/coding
→ Switch off ignition before disconnecting the control unit.
→ Make sure that the power supply is not interrupted during programming/coding.
→ Connect the battery charger with at least > current 90 A to the vehicle battery.
Information
The PIWIS Tester 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 additional information may appear on the PIWIS Tester .
- Replace PCM display and operator control unit.
> 911019 REMOVING AND INSTALLING PCM DISPLAY AND OPERATOR CONTROL UNIT
- Connect the Tester to the vehicle and start it. Switch on ignition.
- Select the vehicle type if required.
- Select the PCM control unit in the overview . Press F12 to continue. The message "Create Vehicle Analysis Log (VAL)?" appears. Press F11 to continue.
- Maintenance/repairs must now be selected.
- Update confirmation must be selected. Press F12 to continue. Press F8 to start.
- A message appears reporting that the check was completed successfully. Press F12 to continue.
- Read out the fault memory and erase it if necessary.
- Exit the diagnostic application. Switch off ignition. Disconnect the Tester from the vehicle.