Important Preliminary Inspections Before Starting

Perform Diagnostic System Check - Vehicle in Vehicle DTC Information and verify all of the following items:

• The powertrain control module (PCM) and malfunction indicator lamp (MIL) are operating correctly.
• There are no DTCs stored.
• The scan tool data is within the normal operating range, refer to Scan Tool Data List .
• Verify the customer concern.
• Perform the Visual/Physical Check in this section.