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 carrying out the individual functions.

ENGINE CONTROL MODULE (ECM) FUNCTIONS

Function performable with

Ignition switched on

Engine idling

02 Check DTC Memory

Yes

03 Output Diagnostic Test Mode

Yes

04 Basic Setting

Yes⁽¹⁾

Yes⁽²⁾, ⁽³⁾

05 Erase DTC Memory

Yes

06 End Output

Yes

07 Code Control Module

Yes

08 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 is blocked.

⁽³⁾	Must be performed when checking idle speed.