d. QR Codes ‡ In order to minimize performance tolerance of injectors at replacing them, QR*1 (Quick Response) codes have been adopted to enhance correction precision. ‡ Using QR codes has resulted in a substantial increase in the number of fuel injection quantity correction points, and thus the injection quantity control precision has improved. The characteristics of the engine cylinders have been further uni- fied, contributing to improvements in combustion efficiency, reductions in exhaust gas emissions and so on.
QR code correction points -RNIGXMSRUYERXMX]5 4VIWWYVI4EVEQIXIV 56GSHISRXLIMRNIGXSVGSRRIGXSV %GXYEXMRKTYPWI[MHXL85 5) Location of QR codes 56'SHIWQQ -('SHIW EPTLERYQIVMGJMKYVIW &EWIGLEVEGXIVWRSXMRKJYIP MRNIGXMSRUYERXMX]GSVVIGXMSR MRJSVQEXMSRJSVQEVOIXWIVZMGIYWI 5) e. Repair Procedure Changes ‡ Differences in comparison with the conventional method of replacing injectors assembly are as shown below. When replacing injectors with QR codes, or the engine ECU, it is necessary to record the ID codes (QR codes) in the ECU.
(If the ID codes of the installed injector are not registered correctly, engine failure such as rough idling and noise will result.) ‡ New (Injector with QR Codes) FEWIGLEVEGXIVWRSXMRKJYIPMRNIGXMSRUYERXMX]GSVVIGXMSR MRJSVQEXMSRHMWTPEIHJSVQEVOIXWIVZMGIYWI -('SHI 5) -20-