Procedures

INITIALIZATION PROCEDURE FOR LEARNING VALUE IN MFI ENGINE
When the following service is performed, initialize the learning value.
^ At replacing engine assembly*
^ At replacing throttle body and at cleaning
^ At replacing knock sensor

NOTE: *Initialize A/T-related learning value.

INITIALIZATION PROCEDURE

Required Special Tools:
^ MB991958: Scan Tool (M.U.T-III Sub Assembly)
^ MB991824: V.C.I.
^ MB991827: M.U.T.-III USB Cable
^ MB991910: M.U.T.-III Main Harness A

CAUTION

To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.

1. After the ignition switch is in "LOCK" (OFF) position, connect scan tool MB991958 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Select ''MFI" " from System select Screen of scan tool MB991958.
4. Select "Special Function" from MFI Screen.
5. Select "Learned value reset" from Special Function Screen.
6. Select "All learned value" from Learned value reset Screen.
7. Initialize the learning value by pressing the "OK" button.
8. After initializing the learning value, the learning value of MFI engine idling is necessary.