Component Location
General Description

IQA (Injector Quantity Adjustment) means adjusting fuel injection quantity difference between injectors which occurs inevitably at manufacturing process as allotting serial number consists of 7 letters to each injectors.

Inputting IQA code of injectors installed in each cylinder to ECM, ECM recognizes the fuel injection quantity difference between each injectors. ECM adjusts every injector to have same fuel injecting characteristic as recognizing specific fuel injection map which is different for each serial number.

DTC Description

P1671 is set when IQA data is not inputted to ECM during initialization of ECM.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

● EEPROM monitorting

● IQA not inputted to ECM

Enable Conditions

● IG KEY "ON"

Threshold Value

● IQA code is not inputted to ECM.

Diagnostic Time

● Immediately

Fail Safe

Fuel Cut

NO

● Engine Check Lamp blinks.

EGR Off

NO

Fuel Limit

NO

Check Lamp

YES

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