When the engine is cranking, the starter operation signal is sent to the ECM STA terminal of the ECM.

The ECM constantly generates 5 V of power from the battery voltage supplied to the +B (BATT) terminal to operate the microprocessor. The ECM also provides this power to the sensors through the VC output circuit.

When the engine switch is turned on (IG), the battery voltage is applied to the IGSW terminal of the ECM. The output signal from the MREL terminal of the ECM causes current to flow to the coil, closing the contacts of the integration relay (EFI relay) and supplying power to terminal +B of the ECM.

Confirm with the customer the conditions in which the noise occurred.

Check whether the oil leak is an internal or external oil leak.

The Active Control Engine Mount (ACM) system decreases engine vibration at low engine speed using the VSV for engine mount. The VSV is controlled by a pulse signal transmitted to the VSV from the ECM. The frequency of this pulse signal is matched to the engine speed to decrease engine vibration.

Connect the GTS to the DLC3.

Connect the GTS to the DLC3.

Check the injector compensation code ().

Engine Control