- Important Preliminary Checks

Before using this section, perform the Powertrain On-Board Diagnostic (OBD) System Check and verify all of the following items: Testing and Inspection

^ The PCM and Malfunction Indicator Lamp (MIL) (Service Engine Soon) are operating correctly.

^ There are no DTC(s) stored.

^ Scan tool data is within normal operating range, Refer to Typical Scan Data Values.

^ Verify the customer complaint and locate the correct symptom. Perform the procedure included in the symptom chart. Testing and Inspection