REMOVAL AND INSTALLATION

caution

When replacing the engine control module (ECM), do not replace the immobilizer-ECU (WCM) or KOS-ECU at the same time with ECM. When replacing multiple ECUs, always replace only one ECU at a time and complete necessary ID registration using the scan tool. (Refer to GROUP 42B - Diagnosis, ID Code Registration Judgment Table .) <Vehicles with KOS> (Refer to GROUP 42C - Diagnosis, ID Code Registration Judgment Table .) <Vehicles with WCM>
After the engine control module (ECM) replacement, idling speed may be unstable because the MFI engine learning is not completed. To make it stable, let the system learn the idling. (Refer to GROUP 00, Precautions Before Service - Learning Procedure for Idling in MFI Engine .)
After the engine control module (ECM) replacement, register a key code using the scan tool (Refer to GROUP 00 - Precautions Before Service, How to Perform Vehicle Identification Number (VIN) Writing ).
When the engine control module (ECM) is replaced, save the vehicle identification number and perform the variant coding.
When the engine control module (ECM) is replaced, the initial learning value of timing chain elongation amount must be stored and written by using the scan tool (Refer to GROUP 00 - Precautions Before Service, Timing Chain Maintenance ).

Pre-removal and post-installation operation

Air Cleaner Assembly Removal and Installation (Refer to GROUP 15, Air Cleaner ).

			Removal steps
	>>B<<	·	Initialization operation (only at installation)
<<A>>	>>A<<	1.	Break-off bolts <vehicles for Canada>
		2.	ECM connector cover <vehicles for Canada>
		3.	ECM connector connection
		4.	ECM stay
		5.	ECM and ECM bracket assembly
<<A>>	>>A<<	6.	Break-off bolts <vehicles for Canada>
		7.	ECM bracket
		8.	ECM

REMOVAL SERVICE POINT

1.Drill in the break-off bolt a hole deep enough for the tap to stand.
2.Remove the break-off bolt with a left-hand tap.

Tighten until the head of break-off bolt is broken off.

Turn the ignition switch to the "ON" and then to "LOCK" (OFF) position and hold it for at least 10 seconds.