2012 911 Section 2-2 11/3/11 10:14 AM Page 19
911 Carrera 911 Carrera S
2.4 DME diagnosis The DME control unit Continental SDI 9 can be programmed with the data records for the relevant emission standards, for example EURO 4 (EOBD), EURO 5 (EOBD), USA LEV II (OBD II), on a country-specific basis.
DME engine electronics
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The DME control unit EMS SDI 9 provides the following new DME diagnostic functions and sequences on PIWIS Tester II, for example: • Actual values, for example for thermal management and Auto Start Stop system • System test for vacuum system • System test for thermostat
• New short tests (more user-friendly and with F1 – help)
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• Bleeding the cooling system 2_408_11
Further DME diagnostic information can be found in PIWIS Tester II under: • F1 – help (context-sensitive help) • as well as in Guided Fault Finding/Components and functions/Drive/General information
Actual values The following new function groups are available under the DME actual values: • T_Temperatures Actual values for thermal management. • ST_Start Stop Actual values for the Auto Start Stop system. • LV_Short test results
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If the ignition was not switched off after performing a test drive (the vehicle is still running), you can see which short tests have already been carried out for this driving cycle under the DME actual values “LV_Short test results”.
In this case, it is sufficient to carry out the outstanding short tests in order to achieve the Ready status for all OBD-relevant systems. Only once all systems have achieved the Ready status can it be established whether these are OK by checking the fault memory.
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