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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
  • At replacing injector and at cleaning
  • At replacing linear air-fuel ratio sensor
 
 
INITIALIZATION PROCEDURE
Required Special Tools:
  • MB992744: Vehicle Communication Interface-Lite (V.C.I.-Lite)
  • MB992745: V.C.I.-Lite Main Harness A
  • MB992747: V.C.I.-Lite USB Cable Short
  • MB992748: V.C.I.-Lite USB Cable Long
  • MB991958: Scan Tool (M.U.T.-III Sub Assembly)
    • MB991824: Vehicles Communication Interface (V.C.I.)
    • MB991827: M.U.T.-III USB Cable
    • MB991910: M.U.T.-III Main Harness A (Vehicles with CAN communication system)
caution
  • While the scan tool (M.U.T.-IIISE) is communicating with the vehicle, the electric motor switch may not be turned off and no normally. Therefore, when you turn off the electric motor switch for that communication, wait for several seconds and then turn on it again (do not turn on it immediately).
  • To prevent damage to the scan tool (M.U.T.-IIISE), always turn off the power supply mode of the electric motor switch before connecting or disconnecting the scan tool (M.U.T.-IIISE).
1. After the power supply mode of the electric motor switch is OFF, connect scan tool (M.U.T-IIISE) to the data link connector.
2. Operate the electric motor switch without depressing the brake pedal and turn ON the power supply mode of electric motor switch.
3. Select "MFI" from System select Screen of the scan tool (M.U.T.-IIISE).
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.