Step 2: Using Scan Tool MB991502, Read The Diagnostic Trouble Code (DTC)
CAUTION:
To prevent damage to scan tool always turn the ignition switch to "LOCK" (OFF) position before connecting or disconnecting scan tool.
- Connect scan tool MB991502 to the data link connector.
- Turn the ignition switch to the "ON" position.
- Read the MFI system diagnostic trouble code.
Is DTC P0720 output?
- YES
See DIAGNOSTIC TROUBLE CODE DEFINITIONS in appropriate FAULT ISOLATION article. - NO
Go to step 3 .