Component Location
General Description
ECM is activated by power supply. Signals from several sensors, such as CKPS and APS, is inputted to ECM. Comparing inputted siganals with control LOGIC saved at micro controller and EEPROM, ECM controlls engine as actuating injectors, solenoids and relays.
To guarantee accurate control, ECM performs SELF TEST, DIAGNOSIS of several sensors and actuators. And if serious trouble which affects vehicle performance occurrs, ECM sets DTCs.
At certain cases, ECM shuts down whole systems in order to prevent dangerous situation due to incorrect control.
DTC Description
P1145 will be set when Fuel Cut is not performed , that is ECM still controls fuel injection through the injector although accelerator pedal is off or actual Engine RPM is higher than 320RPM which is target RPM controlled by ECM for more than 0.8sec. In this case, Drive stage for injectors in ECM is failure to controlling the Power supply cut.
DTC Detecting Condition
Item | Detecting Condition | Possible Cause |
DTC Strategy | ? Software monitoring | ? ECM internal error |
Enable Conditions | ? Engine running |
Threshold Value | ? Overrun lasts for seconds.(fuel injection performed regardless with driver’s intension) ? Actual Engine RPM is higher than 320 RPM which is target RPM controlled by ECM. - 0.8 sec |
Diagnostic Time | ? Immediately |
Fail Safe | Fuel Cut | YES | |
EGR Off | NO |
Fuel Limit | NO |
Check Lamp | NO |