INITIALIZATION AND REGISTRATION
When the ECM and/or the other component(s) mentioned below are replaced, perform the following utility items, referring to the corresponding Initialization and Registration procedure.
If the ECM is replaced, register the ECU communication ID for Engine Immobiliser System (Refer to the Service Bulletin for Registration).
When the ECM and other component(s) are replaced at the same time, perform the following utility items by following the instructions shown on the tester display, starting with the ECM.
| Replacement Part | Utility Item | See page |
|---|---|---|
| ECM |
|
|
| Injector Assembly |
|
|
| Air Fuel Ratio Sensor | A/F Sensor Compensation Reset | |
| Engine Assembly |
|
|
When the ECM must be replaced, before replacing the ECM, perform the "Learning Values Save" function using the intelligent tester. Then after installing the new ECM, perform all of the initialization/registrations for the "Learning Values Write" function by following the instructions shown on the tester display.
After replacing injector assembly, perform both the "Injector Compensation" and the "Pilot Quantity Learning Values Reset" functions using the intelligent tester.
After replacing the engine assembly, perform both the "Injector Compensation" and the "Pilot Quantity Learning Values Reset" functions using the intelligent tester.
INJECTOR COMPENSATION CODE
Each injector assembly has different fuel injection characteristics. In order to optimize the fuel injections, the ECM uses the compensation codes to balance the different fuel injections between each injector assembly. Injector compensation codes are 12-digit, alphanumeric values printed on the head of each injector assembly.
If an incorrect injector compensation code is input into the ECM, the engine assembly may rattle or engine idling may become rough. In addition, engine failure may occur and the life of the engine may be shortened.
| *a | Example |
| *b | Injector Compensation Code |
FOR USING INTELLIGENT TESTER
Read the instruction manuals before using the tester.
Prevent the tester cable from being caught on the pedals, shift lever and steering wheel when driving with the tester connected to the vehicle.
When driving the vehicle for testing purposes and using the tester, two persons are required. One for driving the vehicle, and the other for operating the tester.
IGNITION SWITCH EXPRESSIONS
The type of ignition switch used on this model differs according to the specifications of the vehicle. The expressions listed in the table below are used in this section.
| Expression | Ignition Switch (Position) | Engine Switch (Condition) |
|---|---|---|
| Ignition switch off | LOCK | Off |
| Ignition switch ACC | ACC | On (ACC) |
| Ignition switch ON | ON | On (IG) |
| Engine start | START | Start |