How To Diagnose The Can Bus Lines
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.
- Connect scan tool MB991958 to the data link connector.
- Turn the ignition switch to the "ON" position.
- Select "CAN bus diagnosis" from the start-up screen.
- When the vehicle information is displayed, confirm that it matches the vehicle whose CAN bus lines will be diagnosed.
- If they match, go to Step 8.
- If not, go to Step 5.
- Select the "view vehicle information" button.
- Enter the vehicle information and select the "OK" button.
- When the vehicle information is displayed, confirm again that it matches the vehicle whose CAN bus lines will be diagnosed.
- If they match, go to Step 8.
- If not, go to Step 5.
- Select the "OK" button.
- When the optional equipment screen is displayed, choose the one which the vehicle is fitted with, and then select the "OK" button.