WHAT THE COMMON RAIL ENGINE LEARNS

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	P1497 DPF system malfunction	P1498 Excessive PM accumulated in DPF	P1499 Abnormally high DPF temperature	P252F Engine oil level malfunction	Engine assembly replacement
Injector identification code registration	applicable	-	applicable	-	-	-	-	applicable
Small injection quantity learning	applicable	-	applicable	applicable	applicable	applicable	applicable	applicable
Supply pump correction learning	-	applicable	-	-	-	-	-	applicable
Write chassis number	-	-	applicable	-	-	-	-	-

REGISTRATION AND LEARNING PROCEDURE

Refer to

, INJECTOR IDENTIFICATION CODE REGISTRATION PROCEDURE.

Refer to

, SMALL INJECTION QUANTITY LEARNING PROCEDURE.

Refer to

, SUPPLY PUMP CORRECTION LEARNING PROCEDURE.