The ECM calculates the optimum fuel injection ON time based on the data sent from various sensors. The ECM supplies high voltage to the injector charge voltage circuit, grounds the injector solenoid control circuit and drives the injectors of each cylinder. The injector charge voltage circuit shares a bus inside the ECM, and is divided into 2 banks: common power supply 1 and common power supply 2. Common power supply 1 serves the injectors of cylinders No. 1 and No. 4, and common power supply 2 serves the injectors of cylinders No. 2 and No. 3. If the ECM detects a malfunction in the common power supply 2 injector circuit, this DTC is set.
Condition for running the DTC
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0202 (Flash Code 272) Injector Circuit - Cylinder 2".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC P0203 (Flash Code 273) Injector Circuit - Cylinder 3".
Condition for setting the DTC
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".
Refer to "51.Engine Control 1A.Troubleshooting(RZ4E-TC) DTC type definitions".