5.
Are any DTCs recorded ?
▶ Go to the DTC guide of recorded NO. in Scantool.
▶ System operates within specification.
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.
P0602 is set when data writing on EEPROM inside of ECM is impossible.This code is due to the failure of ECM(ECM hardware failure).
Item | Detecting Condition | Possible Cause | ||
DTC Strategy | ● EEPROM monitorting | ● ECM component failure | ||
Enable Conditions | ● Engine running | |||
Threshold Value | ● when data writing on EEPROM inside of ECM is impossible | |||
Diagnostic Time | ● Immediately | |||
Fail Safe | Fuel cut | YES | ||
EGR Off | NO | |||
Fuel Limit | NO | |||
Check Lamp | NO | |||
ECM Component Inspection
IG KEY "OFF", ENGINE "OFF".
Disconnect ECM.
Replace ECM, check if abnormal operations disappear.
If problems are corrected, replace ECM.
Input injector IQA data(7 letters) using scantool at replacing ECM.
Enter the driving distance - how many km the CPF is used- into New ECM with scanner.
For immobilizer applied vehicle, input pin code.
After a repair, it is essential to verify that the fault is corrected.
After connecting Scantool select "DIAGNOSTIC TROUBLE CODES(DTCs)" mode.
Clear recorded DTC using Scantool.
Drive the vehicle within DTC "Enable conditions" in "General information".
After selecting "DIAGNOSTIC TROUBLE CODES(DTCs)" mode and check if DTC is recorded again.
Are any DTCs recorded ?
▶ Go to the DTC guide of recorded NO. in Scantool.
▶ System operates within specification.
