M20D-FKS ENGINE CONTROL  ECM  REMOVAL  

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during ECM removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function when Necessary Procedure not Performed	Link
Replacement of ECM	Perform Vehicle Identification Number (VIN) or frame number registration	DTC P063051 is output	(202304,999999,_51,_083058,_0401834,RM1000000029C6T,)
	Perform Total Short Trip Estimate Registration	-
	GPF Deposition Values: · GPF deposition values save · GPF deposition values write	· MIL comes on · Deterioration of fuel efficiency
	Update ECU security key	Vehicle Control History (RoB) are stored	(202405,999999,_V1,_083041,_0402305,RM100000002ISNL,)
	ECU communication ID registration	Engine start function	See Service Bulletin for the registration method.
	for K121: If transaxle compensation code read from ECM - Transfer transaxle compensation code - Deceleration sensor zero point calibration - CVT oil pressure calibration - Perform road test to allow ECM to learn	· Large shift shock · Deterioration of fuel efficiency	for Initialization: (202409,999999,_52,_138176,_0584691,RM100000002NRHB,) for Registration: (202304,999999,_52,_138176,_0584691,RM1000000029HF6,)
	for K121: If transaxle compensation code not read from ECM - Reset transaxle compensation code - Deceleration sensor zero point calibration - CVT oil pressure calibration - Perform road test to allow ECM to learn
	for K121F: If transaxle compensation code read from ECM - Transfer transaxle compensation code - Deceleration sensor zero point calibration - CVT oil pressure calibration - Perform road test to allow ECM to learn	· Large shift shock · Deterioration of fuel efficiency	for Initialization: (202409,999999,_52,_138817,_0596468,RM100000002NRBH,) for Registration: (202304,999999,_52,_138817,_0596468,RM100000002AWR8,)
	for K121F: If transaxle compensation code not read from ECM - Reset transaxle compensation code - Deceleration sensor zero point calibration - CVT oil pressure calibration - Perform road test to allow ECM to learn

NOTICE:

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After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.

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If the ECM has been struck or dropped, replace it.

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Perform Vehicle Identification Number (VIN) registration when replacing the ECM.

Click hereEngine / Hybrid System>M20D-FKS (ENGINE CONTROL)>SFI SYSTEM>REGISTRATION202304,999999,_51,_083058,_0401834,RM1000000029C6T,

HINT:

When the cable is disconnected / reconnected to the battery terminal, systems temporarily stop operating. However, each system has a function that completes learning the first time the system is used.

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Learning completes when vehicle is driven

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
Stop and start system	Drive the vehicle until stop and start control is permitted (approximately 5 to 60 minutes).	(202409,999999,_51,_083056,_0402418,RM100000002NSFO,)
Lane tracing assist system	Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.	(201910,999999,_58,_083101,_0401880,RM100000001JE9I,)
Pre-collision system

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Learning completes when vehicle is operated normally

Effect/Inoperative Function When Necessary Procedures are not Performed	Necessary Procedures	Link
*: w/ Power back door system
Power back door function*	Fully close the back door by hand. HINT: Initialization is not necessary if the above procedures are performed while the back door is closed.	(202304,999999,_59,_083093,_0584672,RM1000000029PGT,)
Power door lock control system	If the back door is locked and therefore cannot be opened, it is necessary to unlock the back door using the door control switch, electrical key transmitter sub-assembly switch.	(202409,999999,_58,_083092,_0403003,RM100000002NS90,)
Air conditioning system	"After the ignition switch is turned to ON, theservo motor standard position is recognized"	-