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

P0602 is set when 1)communication error between micro controller inside of ECM and EEP ROM is detected or 2)a different vesion of ECM is installed.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

●

EEPROM monitoring

●

Version difference

between ECM and ECM

communication module

●

ECM component failure

Enable Conditions

●

IG KEY "ON"

Threshold Value

●

(EEPROM communication error): communication failure between microcontroller inside of ECM and EEPROM

●

Each data range is activated abnormally.

●

self test about optional devices(A/C, immobilizer, cruise control)

Diagnostic Time

●

Immediately

Fail Safe

Fuel cut

YES

EGR Off

NO

Fuel Limit

NO

Check Lamp

NO

Component Inspection
1.

ECM Component Inspection

(1)

IG KEY "OFF", ENGINE "OFF".

(2)

Disconnect ECM.

(3)

Replace ECM, check if abnormal operations disappear.

(4)

If problems are corrected, replace ECM.

note

Input injector IQA data(7 letters) using GDS 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.

Verification of Vehicle Repair

After a repair, it is essential to verify that the fault is corrected.

1.

After connecting GDS select "Diagnostic Trouble Codes(DTCs)" mode to and then clear DTC.

2.

Drive the vehicle within DTC Enable conditions in General information.

3.

After selecting "Diagnostic Trouble Codes(DTCs)" mode and check DTC is recorded again.

4.

Are any DTCs recorded ?

▶ Go to the DTC guide of recorded NO. in GDS.

▶ System operates within specification.

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