Caution / Notice / Hint

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) registration	DTC is output	Refer to REGISTRATION [11/2021 - ]
	ECU configuration (Only necessary after replacement)	-	Refer to ECU CONFIGURATION [11/2021 - ]
	Update ECU security key	Vehicle Control History (RoB) are stored	Refer to UPDATE ECU SECURITY KEY [11/2021 - ]
	Switch Specification Information	Vehicle control history (RoB) [X263E] is stored	Refer to INITIALIZATION [11/2021 - ]
	Heavy knock history Save history Write history	-	Refer to REGISTRATION [11/2021 - ]
	Code registration	Engine start function	Refer to REGISTRATION [11/2021 - ]
Replacement of ECM (If transaxle compensation code read from ECM)	Perform reset memory*1 Transfer transaxle compensation code Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency	Refer to INITIALIZATION [11/2021 - ] for UA81F Initialization Refer to REGISTRATION [11/2021 - ] for UA81F Registration
Replacement of ECM (If transaxle compensation code not read from ECM)	Perform reset memory*1 Reset transaxle compensation code Perform road test to allow ECM to learn	Large shift shock Deterioration of fuel efficiency

*1: Not necessary when ECM replaced with new one

NOTE:

To prevent the key from being locked in the vehicle, make sure to enter e-latch inspection mode and enable the manual release handle before disconnecting the cable from the negative (-) battery terminal.

Refer to INSPECTION MODE PROCEDURE [11/2021 - ]

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.

LEARNING COMPLETES WHEN VEHICLE IS DRIVEN

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
Lighting System (EXT)	Drive the vehicle straight ahead at 15 km/h (10 mph) or more for 1 second or more.	Refer to INITIALIZATION [11/2021 - ]
Front Camera System
Adaptive High Beam System
Stop and Start System	Idle the engine for approximately 5 to 60 minutes or drive the vehicle until stop and start control is permitted.	Refer to PRECAUTION [11/2021 - 03/2023] , or refer to PRECAUTION [03/2023 - 03/2024] , or refer to PRECAUTION [03/2024 - ]

LEARNING COMPLETES WHEN VEHICLE IS OPERATED NORMALLY

Effect/Inoperative Function when Necessary Procedure not Performed	Necessary Procedure	Link
E-latch System Back door opener	Perform door unlock operation with door control switch or electrical key transmitter sub-assembly switch.	Refer to INITIALIZATION [11/2021 - ]
Power Back Door System	Reset back door close position	Refer to INITIALIZATION [11/2021 - ]
Air Conditioning System	After the ignition switch is turned to ON, the servo motor standard position is recognized.	-

COMPONENTS (REMOVAL)

Fig 1: ECM Removal Components

Callout - Procedure		Part Name Code
1	PRECAUTION	-	See step 1	-	-
2	NEGATIVE BATTERY TERMINAL	-	-	-	-
3	RADIATOR UPPER AIR GUIDE PLATE	16681A	-	-	-
4	INLET AIR CLEANER ASSEMBLY	17750A	-	-	-
5	AIR CLEANER ASSEMBLY	17700	-	-	-
6	ECM	89661	See step 6	-	-
7	NO. 1 ECM BRACKET	89667E	-	-	-
8	NO. 2 ECM BRACKET	89668	-	-	-