REMOVAL AND INSTALLATION

caution

When the engine-ECU is replaced, do not replace the immobilizer-ECU (WCM) or KOS-ECU simultaneously. When multiple ECUs are to be replaced, always replace only one ECU at a time and complete necessary ID registration using M.U.T.-III (Refer to GROUP 42B - Troubleshooting, ID Code Registration Necessity Judgement Table ) <Vehicle with KOS installed> (Refer to GROUP 42C - Troubleshooting, ID Code Registration Necessity Judgement Table ) <Vehicle with WCM installed>.
After the engine-ECU replacement, idling speed may be unstable because the MPI 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 MPI Engine ).
When the engine-ECU is replaced, save the chassis number and perform the variant coding.

Pre-removal and post-installation operation

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

<Except vehicles for England>

		Removal steps
>>B<<	·	Initialisation <Installation only>
	1.	Engine-ECU connector connection
	2.	ECU stay
	3.	Engine-ECU and ECU bracket assembly
	4.	ECU bracket
	5.	ECU bracket
	6.	Engine-ECU

<Vehicles for England>

			Removal steps
	>>B<<	·	Initialisation <Installation only>
		1.	Engine-ECU connector connection
		2.	ECU stay
<<A>>	>>A<<	3.	Brake off bolt
		4.	Engine-ECU and ECU bracket assembly
<<A>>	>>A<<	5.	Brake off bolt
		6.	ECU bracket
		7.	ECU bracket
		8.	Engine-ECU

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 the break off bolt until its head is broken off.

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