WHAT THE COMMON RAIL ENGINE LEARNS <4N1>

After fuel-related parts are replaced, the common rail engine must register their identification codes with the engine-ECU and execute learning.

The table below shows what should be registered and learned after each type of operation.

note

When the engine-ECU is replaced, collect in advance the injector identification code from the current engine-ECU. Doing it makes registration easy.

Correspondence table

Registration and learning item	Operation type
Registration and learning item	Injector replacement	Suction control valve or supply pump replacement	Engine-ECU replacement
Injector identification code registration	applicable	-	applicable
Small injection quantity learning	applicable	-	applicable
Supply pump correction learning	-	applicable	-

REGISTRATION AND LEARNING PROCEDURE

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