Engine Control Module (ECM) functions

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NOTE: The ECM is equipped with various functions. Some functions can be carried out with ignition switched on or with engine running. The following table details the prerequisites for selecting the individual functions.

ENGINE CONTROL MODULE FUNCTIONS

Function performable with

Ignition switched on

Engine idling

Check DTC Memory

Yes

Output Diagnostic Test Mode

Yes

Basic Setting

Yes⁽¹⁾

Yes⁽²⁾ , ⁽³⁾

Erase DTC Memory

Yes

End Output

Yes

Code Control Module

Yes

Read Measuring Value Block

Yes

⁽¹⁾	Must be performed after the following work: replacement of Engine Control Module (ECM), throttle valve control module or engine

⁽²⁾	Only possible when coolant temperature is above 80 °C (176 °F). Prior to this, function 04 is blocked.

⁽³⁾	Just be performed when checking idle speed.