Inspect that ECM/PCM has the right IQA code written on the surface of each injector by scantool.
Monitor change of current data while changing from engine "ON" to "OFF".
■ Reference data
Fig.1) Normal current data at IG key "START" and idle
This current data is nothing but an example at certain condition. Thus, the real current data could be different from this example.
Is the displayed current data normal ?
![]() | ▶ Injectors are normal. |
![]() | ▶ Select "Engine test function" on the scantool. Execute "Compression Test" → "Idle Speed Comparison" → "Injection quantity comparison" in sequence and check/repair the injector of abnormal cylinder. ▶ Inspect carbon deposit/damage/blocked/widen hole of the injector nozzle after remove the injector. |