Reading out and writing values for PASM control unit
- During coding, there should be a guaranteed power supply for the PIWIS tester P 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 P 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 PIWIS tester P 9718 .
PIWIS tester P 9718 . It is essential to connect a battery charger with a current rating of at least 40 A to the vehicle battery.
1. Connect the PIWIS tester P 9718 to the vehicle and start it. Switch on the ignition. >> Continue.
2. Select the vehicle type.
3. Using the >> key, move from the vehicle type to the list of control units.
4. Select PASM and press >>.
5. In the PASM menu, select Control unit replacement and press >>.
6. Select Read codes and press >>.
7. On the screen of the PIWIS tester appears the message Coding read-out complete >>.
8. Switch off ignition and replace control unit.
9. Switch to the Special functions menu and perform the vehicle handover using the F8 key.
10. In the Special functions menu, erase All fault memories by pressing >>.
11. Switch on ignition. Once the control unit has been replaced, the vehicle data is uploaded under the Write in data menu (see Section 7). Press >>.
12. PIWIS tester displays Coding write-in complete >>.
13. Carry out a test drive and read out fault memory.