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Control module identification

The control module version is displayed by selecting "Diagnostic mode 9: Vehicle information" under address word 33, see DIAGNOSTIC MODE 9: VEHICLE INFORMATION .

Engine Control Module (ECM) equipment 

ENGINE CONTROL MODULE EQUIPMENT SPECIFICATION

Engine identification AWD AWP AWW
System identification Motronic ME7.5 Motronic ME7.5 Motronic ME7.5
Terminals at Engine Control Module (ECM) 121 121 121
Emissions limits according to TLEV (1) LEV(2) LEV(2)
On Board Diagnostic (OBD) OBD II OBD II OBD II
DTC memory Permanent memory(3) Permanent memory(3) Permanent memory(3)
Memory for adaptation values Temporary memory(4) Temporary memory(4) Temporary memory(4)
Oxygen sensor control 2 sensors 2 sensors 2 sensors
Knock sensor control 2 knock sensors 2 knock sensors 2 knock sensors
Intake manifold change-over No No No
Camshaft adjustment No Yes Yes
Boost pressure regulation Yes Yes Yes
Secondary Air Injection (AIR) system Yes Yes Yes
Electronic engine performance regulation Yes Yes Yes
(1) TLEV = Transient Low Emission Vehicles (emission values max. 0.125 g/mi HC)
(2) LEV = Low Emission Vehicles (emission values max. 0.075 g/mi HC)
(3) Independent of voltage supply.
(4) Values are lost when voltage supply is interrupted.

Selectable diagnostic modes under address word 33 - OBD 

NOTE: The conditions required for selecting the desired diagnostic mode are listed in the SELECTABLE DIAGNOSTIC MODES UNDER ADDRESS WORD 33 - OBD  table.
SELECTABLE DIAGNOSTIC MODES UNDER ADDRESS WORD 33 - OBD

Diagnostic mode Requirement:
Selectable diagnostic modes under address word 33 - OBD
  • engine off
  • Ignition switched on.
  • Engine running at idle
  • Vehicle in drive mode
Mode 1: Check measured values See DIAGNOSTIC MODE 1: CHECK MEASURED VALUES  Yes Yes Yes
Mode 2: Checking operating conditions See DIAGNOSTIC MODE 2: CHECKING OPERATING CONDITIONS  Yes Yes Yes
Mode 3: Check DTC Memory See DIAGNOSTIC MODE 3: CHECK DTC MEMORY  Yes(1) Yes Yes
Mode 4: Reset/erase diagnostic data See DIAGNOSTIC MODE 4: RESET/ERASE DIAGNOSTIC DATA  Yes Yes Yes
Mode 5: Check output of oxygen sensor signals See DIAGNOSTIC MODE 5: CHECK OUTPUT OF OXYGEN SENSOR SIGNALS  Yes Yes Yes
Mode 6: Check test results of components that are not continuously monitored See DIAGNOSTIC MODE 6: CHECK TEST RESULTS OF COMPONENTS THAT ARE NOT CONTINUOUSLY MONITORED  No Yes Yes
Mode 7: Check test results of components that are continuously monitored See DIAGNOSTIC MODE 7: CHECK TEST RESULTS OF COMPONENTS THAT ARE CONTINUOUSLY MONITORED  Yes(1) Yes Yes
Mode 8: Tank leak test See DIAGNOSTIC MODE 8: TANK LEAK TEST  No Yes No
Mode 9: Vehicle information See DIAGNOSTIC MODE 9: VEHICLE INFORMATION  Yes Yes Yes
(1) Perform only with ignition switched on when engine won't start (operate starter for at least 6 seconds).