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Because individual injectors have different injection characteristics, the engine-ECU
corrects injection time for each cylinder to improve injection accuracy.
For this reason, when the injector or engine-ECU is replaced, injector correction data
must be registered afterwards in the engine-ECU using the M.U.T.-III.
Correction data is converted into an identification code consisting of 30 alphanumeric
characters and printed on the injector connector.
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1.After the ignition switch is in "LOCK" (OFF) position, connect the M.U.T.-III to the diagnosis
connector.
2.Turn the ignition switch to the "ON" position.
3.Select "MPI/GDI/DIESEL" from System select Screen of the M.U.T.-III.
4.Select "Special Function" from MPI/GDI/DIESEL Screen.
5.Select "Inj.ID Writing (Exchanging ECU)" from Special Function Screen.
6.Select "Injector ID Read&Save" from Inj.ID Writing (Exchanging ECU) Screen
to read data from the current engine-ECU and save the data.
| note |
If the injector identification code cannot be read and cannot be stored from the engine
ECU that is not replaced yet, register the identification code in the same procedures as the injector
replacement.
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7.Turn the ignition switch to the "LOCK" (OFF) position.
8.Replace the engine-ECU.
9.Turn the ignition switch to the "ON" position.
10.Select "MPI/GDI/DIESEL" from System select Screen of the M.U.T.-III.
11.Select "Special Function" from MPI/GDI/DIESEL Screen.
12.Select "Inj.ID Writing (Exchanging ECU)" from Special Function Screen.
13.Select "Saved Injector ID Writing " from Inj.ID Writing (Exchanging ECU) Screen to
write the data, which was saved previously, to the engine-ECU.
| note |
When the registration is completed, the lit engine warning lamp begins to blink.
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14.Execute small injection quantity learning (Refer to  ).
15.Confirm that the engine warning lamp is off. Confirm also that the diagnosis code
is not stored.
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1.After the ignition switch is in "LOCK" (OFF) position, connect the M.U.T.-III to the diagnosis
connector.
2.Turn the ignition switch to the "ON" position.
3.Select "MPI/GDI/DIESEL" from System select Screen of the M.U.T.-III.
4.Select "Special Function" from MPI/GDI/DIESEL Screen.
5.Select "Inj.ID Writing (Exchanging INJ.)" from Special Function Screen.
6.From the Inj.ID Writing (Exchanging INJ.) Screen, select the injector to which the
identification code is registered.
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Content
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M.U.T.-III registered items
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No. 1 injector only registered
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No. 1 Injector ID Writing
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No. 2 injector only registered
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No. 2 Injector ID Writing
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No. 3 injector only registered
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No. 3 Injector ID Writing
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No. 4 injector only registered
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No. 4 Injector ID Writing
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All injector registered
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All Injectors ID Writing
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| caution |
Even if the number of the cylinder to be registered does not match the actual
injector mounting location, registration ends normally. Specify the cylinder number correctly.
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7.Register the injector identification code. Input the identification code printed on the
upper plane of the injector.
| note |
The identification code is divided into eight parts. Input the identification code into
the specified parts.
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8.Push "OK" to register it.
| note |
When the registration is completed, the lit engine warning lamp should begin to blink.
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9.Execute small injection quantity learning (Refer to ).
| note |
When the injector is replaced, executing the write operation clears the values of small
injection quantity learning.
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10.Confirm that the engine warning lamp is off. Confirm also that the diagnosis code
is not stored.
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