2016 – MX-5 – Engine

KOEO/KOER SELF-TEST [PCM (SKYACTIV-G 2.0)]

• On-board diagnosis is performed using the flow pre-set in the PCM, and according to the test execute command sent to the PCM from the external tester.

• If a malfunction is detected as a result of the on-board diagnosis, a DTC is recorded in the PCM.

KOEO (Key ON, Engine Off) Self Test

• The KOEO self test is a powertrain control system self-diagnosis, performed when the ignition is switched ON (engine off). A KOEO self test begins when the connected Mazda Modular Diagnostic System (M-MDS) sends an execute command to the PCM.

• As the KOEO self test is performed, the PCM performs the inspection for set DTCs and if a malfunction is detected, the DTC is displayed on the Mazda Modular Diagnostic System (M-MDS).

KOER (Key ON, Engine Running) Self Test

• The KOER self test is a powertrain control system self-diagnosis, performed when the ignition is switched ON and the engine is idling. A KOER self test begins when the connected Mazda Modular Diagnostic System (M-MDS) sends an execute command to the PCM.

• As the KOER self test is performed, the PCM performs the inspection for set DTCs and if a malfunction is detected the DTC is displayed on the Mazda Modular Diagnostic System (M-MDS).

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