Removal and Replacement
ENGINE CONTROL MODULE (ECM)REMOVAL AND INSTALLATION
CAUTION:
- When the ECM is replaced, do not replace the immobilizer ECU (WCM) or KOS-ECU simultaneously. When replacing a several ECUs, always replace one ECU at a time, and register the necessary IDs using the scan tool MB991958. (Refer to Diagnosis - ID Code Registration Judgment Table.)
- After the ECM replacement, idling speed may become unstable because the MFI engine learning is not completed. To make it stable, let the system learn the idling. (Refer to Precautions Before Service - Learning Procedure for Idling in MFI Engine.)
- After the ECM replacement, register a key code using the scan tool MB991958. [Refer to Precautions Before Service - How to Perform Vehicle Identification Number (VIN) Writing.]
- To replace the ECM, use an ECM for which the vehicle identification number entry and coding are completed. If diagnostic trouble code No. P0630 vehicle identification number-related or No. P1676 variant coding-related is set in the ECM, replace it with an ECM to which the same vehicle identification number has been entered and the same coding has been made as for the relevant vehicle.
Removal Steps 1 - 7:
Pre-removal and Post-installation Operation
Air Cleaner Assembly Removal and Installation (Refer to Air Cleaner).
REMOVAL SERVICE POINT
<> BREAK-OFF BOLTS REMOVAL
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.
INSTALLATION SERVICE POINTS
>>A<< BREAK-OFF BOLTS INSTALLATION
Tighten until the head of break-off bolt is broken off.
>>B<< INITIALIZATION PROCEDURE
Turn the ignition switch on then off, and keep it off for at least 10 seconds.