PRECAUTIONS BEFORE SERVICE
TSB Revision
GENERAL
00-35
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. After the ignition switch is in "LOCK" (OFF) position, connect
scan tool MB991958 to the diagnosis 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 "Timing chain maintenance" from Special Function
Screen.
6. Select "Learned value Read&Save" from Timing chain
maintenance Screen.
7. Press "OK" to store the learning value file.
NOTE: When the learning value file is appropriately stored,
"Learned value Save Complete" is shown on the screen of the
scan tool MB991958.
NOTE: Calculating the amount of elongation of the timing chain
by the ECM takes the time. Thus, the file cannot be stored for a
while after the ECM initialization or replacement.
8. Replace the ECM.
9. Select "Learned value reset" from Timing chain
maintenance Screen.
10.Select the learning value file stored during Step 3 to write
the learning value.
NOTE: Use only the learning value file stored during Step 3
without using any other files.
NOTE: When the learning value is appropriately written,
"Learned value writing Completed." is shown on the screen of
the scan tool MB991958.
AC608435
Data link connector
MB991827
MB991824
MB991910
AB