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.
P1145 is set if fuel to injector is not limited(fuel cut disabled) and injector operates when accelerator pedal is released after acceleraton(when vehicle coasts). This code is due to the case that ECM fails to cut power of injector operating system inside of ECM.
Item | Detecting Condition | Possible Cause | ||
DTC Strategy | ● Software monitoring | ● ECM internal error | ||
Enable Conditions | ● During driving | |||
Threshold Value | ● Overrun lasts for seconds.(fuel injection performed regardless with driver’s intension) | |||
Diagnostic Time | ● Immediately | |||
Fail Safe | Fuel Cut | YES | ||
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | NO | |||
